Chemvert Documentation

• Full Functionality: macOS Version 12 Monterrey or newer
• Basic Functionality (some functions disabled): macOS Version 10.12 Mojave and newer
• 450MB available disk spaceImages in TIFF format, Pakon RAW, Noritsu RAW, EXR, or RAW photos from camera scans

• Note: to avoid macOS asking for permissions to access specific folders and hard disks, it may be helpful to add and enable Chemvert to the Full Disk Access in macOS. A link to this setting is provided in the Chemvert Help menu.

To begin, input an image. This is done in one of four ways:

• Click the choose file button
• Select File > Open from the menu bar
• Press CMD + O on the keyboard
• Drag an image file onto the application window from Finder or Adobe Bridge

By default, the application will automatically set the input file type based on the extension of the image chosen.

Next, confirm the input parameters such as File Type and relevant sub-options are correct based on the way your image was scanned. Default options are the most common, but you are free to change them accordingly. For TIFF files, it is important that you set the correct scanned gamma, either linear or gamma 2.2. More information is below in the File Input > Tiff File section of this guide.

You are now ready to Preview your image. Proceed to the bottom of the Processing pane and click RUN. If you would like to automatically run previews after inputting an image or after each adjustment, enable the Auto Preview switch. (See Auto Preview in the Settings section below.)

If you like what you see and want to save the inverted file, switch from PREVIEW to EXPORT. This will enable the image output parameters for file type, location, and name. Once these are set to your liking, click RUN and your image will be saved.

• To quickly navigate to the previous or next image of the same file type in the source folder, you may use the left and right arrow keys.

To Export all files of the same file type in your source folder, input any image from that folder and choose Entire Folder from the Output dropdown. It is recommended to Preview at least one image first. Files of a different type will be skipped.

• NOTE: when Entire Folder is selected, each image will be evaluated independently of the others. If you wish to process a whole folder of images using a uniform inversion for each image in the set, read more about the Film Base Detect lock, AUTO locks, and Custom Stock presets — all of which are discussed further below.

If the Run button is disabled, either no input image is selected, an output parameter needs to be filled in, incompatible options are selected, or a custom image processor has not been specified. For example: custom output location is selected without a folder chosen.

To reset any parameter to its default value you may right click on the slider or dropdown. Related parameters can be reset by right clicking on the group label.

• If previews are running slower than desired on your system, there are a few options to help speed them up.
• Install the image processor locally through Help > Install Local Image Processor. This allows processing to be multi-threaded and work much quicker, especially on larger files.
• On older systems, slower drives, or with larger scan files, try the Fastest Speed or Faster Speed options under Preview Priority in the settings tab.
• If your files are stored on a slow or external hard drive, consider using internal or faster storage for working files.

After export, you can click on the folder location in the metadata area of the preview window to open the output folder.

If results look generally correct but too low contrast, it may help to set the Film Base Detection to a more aggressive option. Conversely, if the results look overly contrasty, selecting a less aggressive Film Base Detection may help retain more data, depending on the resolution, noise, and grain level of the scanned image.

In certain scenarios, Auto Color may not produce expected results.Images with large areas of a certain color will be overcorrected in the opposite direction, such as large areas of green grass will give the image a slight magenta bias. To avoid this, you can try locking the auto color values on an image that works well, or utilize Presets and the Custom Film Stock generator which are discussed below in the Processing Tab > Film Base Detect > Custom Stock section of this guide.

Auto Color also doesn’t account for specific editing tastes. If you prefer warmer images overall, it may work well to use Auto Color in combination with the Color Sliders, for example adding a little bit of red and yellow. The color sliders make adjustments after auto corrections are applied, so they work well in combination with Auto Color.

When adjusting colors manually, to achieve natural looking white balance it often helps to start by adjusting red and blue in opposite directions, equidistant from the green slider. The green slider can then be moved relative to red/blue to adjust the tint.

Film Base Detect > Custom Film Base allows you to utilize a fully calibrated and repeatable workflow for each film stock/scanner combination you use. To use this option you must first establish your stock preset. This can be done in three ways:

• Stock Preset Builder can be used to determine the full dynamic range and neutral gray point, thereby producing consistent images with color and exposure as-shot in camera, without optimizing for the specific exposure range of each image. This is especially useful for bracketed exposures or test charts. For more information go to Advanced Tools in the main menu and choose Stock Preset Builder. From there you may select “Documentation” from the Help menu.
• When using the Multi-Image Sample tool, enable Save Stock Preset and name your preset. This option applies all color and exposure values from the Auto Color, Auto Exposure, and individual color and exposure sliders to the Stock Preset. For more information go to Advanced Tools in the main menu and choose “Multi-Image Sample.” From there you may select “Documentation” from the Help menu.
• Click the “Save” icon next to the Film Base Detect dropdown. (*This option only applies the white and black points determined by the film base detection and does not apply any color or exposure adjustments made with the sliders or auto buttons. See “Film Base Detect” and “Film Base Detect Lock” below for more information.)

For images that include frame borders, perforations, large areas of the negative holder, or portions of the unexposed film base, you may experience suboptimal color, contrast, and exposure shifts. To obtain normalized images, either use the Crop or Edge Detect functions to remove the borders and/or enable Ignore Borders and set a percentage from each edge to ignore during processing.

The main application window can be resized by dragging corners of the window, and the preview image will fill the largest area possible.

Choose File

Click here to choose a file to open. This is your scanned negative file (or positive in the case of slides). When you are converting an entire folder, only one file from that folder should be chosen. The application will set the file type based on the extension of the chosen file. A file can also be added by dragging it into the application window from Finder or Adobe Bridge, or by using the keyboard shortcut CMD + O, or by selecting File > Open from the menu bar.

File Type

Select the type of image you are converting. This choice will reveal or hide the following relevant options.

Image Area

When first opened, a splash image appears in this area. Preview images will be displayed here after processing an image. The background color can be changed in the Window > Preview Background Color menu. (* When the application window is resized, the preview image will fit the largest area possible.

Histogram

Once a preview image has been created, its histogram will be displayed in the bottom right.

Metadata

The metadata for a previewed or exported image will be displayed in the bottom left of the preview area. Source resolution is calculated after all cropping is applied. After export, the image can be opened in Finder by clicking on the exported image path listed in the last row of the metadata area.

Dashboard

The top of the preview area is home to the dashboard. Here you can quickly see which options are selected, indicated by highlighted icons. Hover over an icon to see what it represents. When an export is finished, an export complete notification will be displayed at the far right of the dashboard. Clicking this notification will also open the exported image in Finder.

Processing Type

Choose the combination of input and output you would like.

Black and White

Select to process the input image as black and white. When used with color images, the color controls and color engines can still be used to adjust the output tonality similar to using color filters on the lens when shooting black and white.

Color Engine

Select which method you want to use to invert a negative image to a positive. For motion picture films there are several print film styles. Default is a straight inversion with no Color Engine. The Pakon engine is optimized to give the best results on Pakon Scans, although it may work well for other scans as well.

Film Base Detect

Adjust the sensitivity used to interpret the film base. The higher the noise/grain, the more useful a stronger detection will be.

• Strict has the least tolerance and may produce color casts depending on the scan quality. However, for very clean scans and camera scans with high resolution or low noise, often strict will work well.
• Standard is the most common interpretation and should work well in most cases.
• Strong and Aggressive will increasingly eliminate casts but create slightly more contrasty results.
• Custom Stock reveals the Custom Stock dropdown where you may choose your Custom Stock preset which was created in the Multi-Image Sample or Stock Preset Builder windows. You may also save a Custom Stock Preset with the “Save” icon to the right of the Film Base Detect dropdown, discussed in the next section. Depending on the file type, additional meta such as Processing Type, Tiff Gamma, and Camera Scan profiles are automatically loaded with the custom stock preset. The list of available presets is loaded automatically when the window opens or is brought into focus. To manually refresh the list, right click on the drop down. For more information on creating Stock Presets, go to “Advanced Tools” in the main menu and choose “Stock Preset Builder” or “Multi-Image Sample.” From there you may select “Documentation” from the respective Help menu.

When working with positive scans, Strong or Aggressive may work better than the Standard option depending on the contrast in the scene.

Film Base Detect Lock

This option must first be enabled in the Settings Tab. See Settings Tab below for more information.

Once enabled, this option is controlled with the “lock” icon to the right of the Film Base Detect dropdown. This feature locks the film base detection based on the last image processed. This is a great way to quickly get the benefits of a custom stock preset on the fly.

This feature works best if you enable it after previewing or exporting a good representative sample from a roll, whereby the following images are processed the same way relative to the sample, maintaining differences in exposure, black, and white point.

This feature is not enabled if Film Base Detect is set to None or Custom Stock and is not compatible with the Legacy Mode image processor. This option will not save the locked state once the application is closed.

Film Base Detect Save

Clicking the “Save” icon next to the lock icon will save the film base detection from the last run image to a Custom Stock Preset. This preset will be populated in the Custom Stock dropdown options and can be reused as needed for future inversions. See the next section for more information.

This feature is not enabled if Film Base Detect is set to None or Custom Stock.

Custom Stock

This option processes your scan based on presets saved from the Film Base Detect Save icon, the Stock Preset Builder, or the Multi-Image Sample windows (available from the Advanced Tools toolbar). This function can be used to provide consistent results regardless of image content. A different Custom Stock Preset should be created for each film stock and scan method combination in your workflow, and requires identical scan settings for all images that use the preset. The Pakon scanner is ideal for this. Camera Scans and Tiff files must be captured using matching exposure settings for each image for consistent results.

For example, when using custom stock presets, shots with heavy lens flare or low contrast will remain that way, and under- and over-exposed images will remain as captured (unless the auto exposure tool is used in addition).

Custom Stock Presets can be deleted by selecting one and clicking the “Delete” button. Custom Stocks may not work well with DSLR scans if using Auto WB in the Camera Scan input options. Instead, create a camera profile as noted in the Settings Tab > Save Custom Camera WB Profile section of this guide.

Exposure

Adjust the exposure of the image. Does not create black or white clipping. Selecting AUTO allows the main slider to work as an offset, so both options may be used together. There are two levels for auto exposure, day and night, which are indicated by the color of the auto button as well as the sun and moon icon. AUTO may not produce desired results for very bright or dark scenes without also using the exposure slider to adjust for those particular images.

Exposure Value Transfer Button

When available, the Exposure Value Transfer button allows you to copy the Auto Exposure values from the last processed image to the sliders. Doing so will allow you to see the Auto adjustment reflected on the slider where you may then continue with manual exposure adjustments. To enable this option, first run an image with auto exposure selected,then click the button to the right of the slider.

Color

Adjust the color balance of the image. Can be used to make white balance adjustments or other adjustments to your liking. Select AUTO to have the software compute the white adjustment for each frame. If you have strong color dominance in the frame, like a full blue sky, you will need to further compensate by adjusting the color sliders manually after running Auto.

Color Value Transfer Button

When available, this option allows you to copy the Auto Color values from the last processed image to the sliders. Doing so will allow you to see the Auto adjustment reflected on the sliders where you may then continue with manual color adjustments.To enable this option, first run an image with auto color selected, then click the button to the right of the slider.

Lock Auto Exposure, Auto Color, and Film Base Buttons

You also have the option to lock the Auto values for successive images, while also keeping the flexibility to adjust the sliders as needed. For example: you have a combination of Auto and manual adjustments for a frame that is working great. You may lock those values so each successive image is processed with those same settings. The lock is activated by a CMD+Click on the respective Auto button or by clicking the Lock button next to Film Base Detect. When this is locked, a lock symbol will appear inside the button and the last processed image’s Auto values will be used for all new images until you release the lock by clicking Auto again. This option does not show the Auto values on the sliders, but does allow the sliders to be used in combination as usual.

Auto Contrast

Select AUTO to have the software compute the contrast for you. This option is disabled if the black point and white point sliders are not set at their defaults. This works well in combination with large exposure adjustments or the Auto Exposure button.

Contrast Amount

Creates an ‘S’ Curve at the white and black point while avoiding clipping.

Contrast Pivot

Selects the midpoint at which the contrast curve is applied. Combined with the contrast adjustment, this is a powerful exposure tool because the S-curve adjusts the luminance without clipping. At the selected pivot point, the image gets neither brighter nor darker. When the slider is at 0, contrast is adjusted evenly in the highlights and shadows.

Black Point

Adjust the minimum black level. Zero is no adjustment. Can be especially useful with expired film to avoid too much contrast in the dark areas of the image.

White Point

Adjust the maximum white level. 100 is no adjustment. Can be especially useful with expired film to avoid too much contrast in the light areas of the image.

Saturation

Adjust the color saturation.

Sharpening

Add sharpness to the image after inversion and export scaling. Will slow down the image processing.

Ignore Borders

Color processing, film base detection, and all auto functions will ignore the selected percentage of image edge. Useful if your image has perforations, rebate, or scanner masks in the file you wish to keep and not crop out. This is especially helpful for camera scans with a negative holder or light source visible in the image, or with visible sprockets in your scans. The percentage value is what percentage of the width and height on all sides should be ignored when processing. (*Note: When used with the Legacy Mode image processor, this setting will have reduced quality when combining Film Base Detection with black and white point adjustments.)

Automatic Edge Detection

Attempts to detect scanner borders or rebate from the edges of the image and trim them out. Level adjusts the sensitivity of detection. Percentage value is the tolerance for detecting an edge. Works well in combination with Crop All edges.

Higher contrast edges on the borders will be easily removed with low Automatic Edge Detection values , while lower contrast edges may need a higher value. To avoid unintended cropping, it is best to use the lowest Edge Detection value that works for an image. Setting this slider too high could result in an aggressive crop or an invalid input parameter error.

Filp Image Vertically, Horizontally

Mirrors the image along the given axis on input, before any rotation or cropping.

Rotate

Rotates the image in 90 degree increments.

Crop All

Crops the same percentage from all edges of the image. The orientations refer to the image after all other flip and rotate operations have been performed.

Crop Top, Bottom, Left, Right

Crops the given percentage from a specific side of the image after rotation.

Crop Aspect Ratio

Forces the image to the specified aspect ratio after all cropping options, with the least amount of trim possible to achieve the desired ratio.

Resize

Resizes the output image scale to the given percent of the original.

Distort X, Y

Add or remove barrel distortion in either the X or Y axis, respectively, to compensate for lens distortion or for negatives that were not quite flat in the film carrier.

Keep Settings on Relaunch

Saves your current image processing settings and applies them when the application is opened next time. Mirrors the “Menu > Presets” option.

Enable Film Base Detection Lock & Save

Enables the film base detection “Lock” and “Save” buttons next to the “Film Base Detect” dropdown. Causes a slight decrease in preview speed. With extremely large files, it may help to lower the Preview Priority when using this feature to help avoid extra delay. Not compatible with the Legacy Mode Image Processor or a Film Base Detection of None or Custom Stock.

AUTO Button Resets Exposure & Color Sliders

When enabled, color and exposure sliders will be reset to their default values when you enable their respective Auto buttons. Works well in combination with the “AUTO Button Values Always Copy to Sliders” option.

AUTO Button Values alwyas Copy to Sliders

When enabled, color and exposure sliders will always reflect the auto values each time the respective Auto button is used. Works well in combination with the “AUTO Button Resets Exposure & Color Sliders” option.

Automatically Set Input Settings

When enabled, input settings will be changed automatically based on the file type selected. Sub-options such as Tiff Gamma and Pakon Resolution populate from your last-used choices. (*Note: When Auto Preview is active and this setting is disabled, auto preview will only run if the new input file is the same type as the previous one.)

Use Image Rotation Metadata

When enabled, images are automatically rotated based on their metadata so their orientation matches what is seen in Finder or Adobe Bridge.

Force High Quality Camera Scan Preview

This option makes full resolution preview debayers for camera scan raw files. Makes preview slower but more accurate.

Play Sound on Successful Export

When enabled, a sound will play after exports are complete. Does not affect preview operations.

Processing Delay

The amount of delay between your input changes and auto processing when using “Auto Preview”. Can be useful for older/slower computers, or to avoid taxing the CPU for large images, or when making many quick changes with Auto Preview enabled.

File Overwrite

Choose the handling method when Export attempts to create files with existing file names.
Overwrite is the default. This will overwrite existing files with new ones. (*Note: If [source] is chosen as the output file name and a custom output folder is set to the same as the source folder, the Run button will be disabled.)Skip Existing will skip any output files with the same name and notify at the end of an export if one or more files were skipped.Keep Both will write new files while appending subsequent and increasing numbers to the file name each time a conflict is encountered.

Preview Priority

Select the balance of priorities between highest quality and accuracy vs. speed. For many computers this may not make much difference in preview speed, but for slower or older computers, one of the faster speed options may enhance usability, especially with Auto Preview turned on. (*Note: In some cases, increasing the speed will result in an export that differs from the Preview. It is advisable to experiment with this setting.)

Minlab Mode

When Minilab Mode is active, after Export, the next image in the folder will automatically load into Preview. If you have applied a preset since opening the application, the Export > Preview & Preset option will be available, and will also apply the last used preset when loading the next image. Minilab mode is off by default each launch.

Image Processing

Allows the user to select either the bundled version of the image processor or the one you have installed . A custom installation folder location may be selected for advanced users.

• We recommend installing Imagemagick and selecting “User Installed.” Please see Install Local Image Processor from the Help Menu for more information on installing on your system.
• The Legacy Mode setting should only be used for older systems running macOS 11 Big Sur or older, or systems that give errors with the In-App image processor selected. In Legacy Mode, several options will be disabled, including EXR file input, Auto Contrast, Film Base Lock/Save, as well as limited functionality of ignore borders with most film base detection options.

User Defined Location

Allows the user to use a custom folder location for the ImageMagick executable. This Should be the path to the magick executable, such as /opt/homebrew/bin/magick.

Save Custom Camera WB Profile

Reads the Raw file metadata for use with camera scans. Choose any raw file shot with your camera and name your profile. Any file from the camera or exact same model will work, it doesn’t matter what the image contains. You will then have access to the profile when processing your scans by selecting the White Balance > Camera Profile dropdown. Not compatible with Nikon cameras.

Save Lens Vignette Profile

Allows creation of lens profiles for use in the camera scanning options.

To create this profile, take a blank image of your camera scan light source with no film in the holder. Make sure there is nothing black in the image or dust on the lens or backlight. Only the light source should be visible. If any of the film holder is visible, move the holder slightly or adjust the camera a little closer until it is no longer visible. Focus on the plane the film would normally be. Next, set the aperture and ISO to the setting used when scanning your film. Observing the histogram, adjust the shutter until the image is just under the clipping point, then adjust white balance until the 3 channels line up as closely as possible. Readjust shutter again if needed, being careful that nothing is clipped in the image. Take the photo, and load it into the Save Lens Vignette Profile tool with the choose file button, and select a name.

After the profile saves, it will be added to the Lens Profile dropdown.

Log

Progress of the application is noted in the log.

Auto Preview

When enabled, the application will automatically preview your image after you make changes to individual sliders and dropdowns or when the input image is changed. Works well in conjunction with the left and right arrow key shortcuts to preview the previous or next image automatically. If Automatically Set Input Settings is disabled, then auto preview will not run if a new input file is added with a different extension than the previous input file. Processing delay can be used to reduce CPU usage when making multiple adjustments quickly. See Processing Delay in the Settings Tab > Processing Delay section of this guide.

Preview/Export

Preview processes your image and shows you a scaled preview in the Preview window. Export creates a full resolution file with the chosen name, location, and type, and also generates a preview in the preview window. Output options are grayed out if preview is selected.

Output File Type

Choose the type of file to create on export. Does not affect the preview image.

Output Location

Default location is inside a folder called inverted where the original image resides. Chemvert will create the folder if it does not already exist. Not used in Preview mode.

Custom Location

Choose a custom location for your output files. Not active if your output location is set to [source]/chemvert. (*Note: If the custom location is set to the same folder of the source image and file overwrite is chosen, the Run button will be disabled.)

New File Name

Select the default or custom output naming convention. Default is [source]-inverted. [source][custom] uses the source name with your chosen suffix in the Custom File Name field. [custom] uses the Custom File Name only. Not used when previewing only.

Custom File Name

Choose custom text for naming files as outlined above in “New File Name”. Not active if New File Name is set to [source] or the [source]-inverted. (*Note: If source is selected, the output folder is the same as the source image folder, and file overwrite is selected, then the Run button will be disabled.)

Single File/Entire Folder

Single file exports only the selected image. Entire Folder exports all files of the same type in the same folder as the selected image. If Preview is selected, this option is disabled and only the single selected image is run for preview.

• On its own, “Entire Folder” processes each image individually. We recommend familiarizing yourself with the Custom Stock Preset options as well as Auto settings and their respective locks, as these can all be helpful in some instances when exporting an entire folder, i.e. if you want to export an entire folder with the same settings. More information on these options can be found in the Processing > Lock Auto Exposure, Color, and Base Buttons section of this guide.

Run and Cancel Buttons

“Run” starts image file creation using your selected options. It will be grayed out while the process is running. You may cancel the process at any time with the “Cancel” button.

Save User Preset

Save your settings in a preset to use again later. This opens a popup window where you can choose which parameters to save with the preset. All saved parameters will be applied when recalling the preset, so the naming and selection of these options is important.

To recall the preset go to Menu > Presets > Apply User Preset. Also see “Menu Bar > Presets” below for more information.

• (Note: the preset only saves the state of the Auto Exposure and Auto Color buttons, not the specific corrections. To save Auto Exposure or Color results to a preset, you must first apply the auto values to the sliders. See the Settings Tab > Exposure Value Transfer Button and Color Value Transfer Button section of this guide for more information”)

Command	Shortcut
Open	Command ⌘ + [ O ]
Run	Command ⌘ + [ ENTER ]
Open Previous File	Left Arrow
Open Next File	Righ Arrow
Cancel	Command ⌘ + [ ESC ]
Toggle Preview/Export	Command ⌘ + [ E ]
Toggle Minilab Mode	Command ⌘ + [ L ]
Copy	Command ⌘ + [ C ]
Paste	Command ⌘ + [ V ]
Reset All Options	Control ⌃ + [ A ]
Reset Exposure	Control ⌃ + [ E ]
Reset Color Values	Control ⌃ + [ W ]
Reset Red	Control ⌃ + Option ⌥ + [ R ]
Reset Green	Control ⌃ + Option ⌥ + [ G ]
Reset Blue	Control ⌃ + Option ⌥ + [ B ]
Reset Crop	Control ⌃ + [ C ]
Toggle Auto Color	Command ⌘ + [ G ]
Color To Red	[ Q ]
Color to Cyan	[ A ]
Color To Green	[ W ]
Color To Magenta	[ S ]
Color To Blue	[ E ]
Color to Yellow	[ D ]
Decrease Saturation	Command ⌘ + [ , ]
Increase Saturation	Command ⌘ + [ . ]
Toggle Auto Exposure	Command ⌘ + [ T ]
Increase Exposure	[ R ]
Decrease Exposure	[ F ]
Toggle Auto Contrast	Command ⌘ + [ B ]
Decrease Contrast	Command ⌘ + [ H ]
Increase Contrast	Command ⌘ + [ Y ]
Decrease Pivot	Shift ⇧ + Command ⌘ + [ H ]
Increase Pivot	Shift ⇧ + Command ⌘ + [ Y ]
Decrease Black Point	Command ⌘ + [ J ]
Increase Black Point	Command ⌘ + [ U ]
Decrease White Point	Command ⌘ + [ K ]
Increase White Point	Command ⌘ + [ I ]
Toggle Ignore Borders	Option ⌥ + Command ⌘ + [ I ]
Decrease Ignore Borders Percentage	Control ⌃ + Command ⌘ + [ B ]
Increase Ignore Borders Percentage	Option ⌥ + Command ⌘ + [ B ]
Toggle Edge Detect	Shift ⇧ + Command ⌘ + [ E ]
Decrease Edge Detect Percentage	Control ⌃ + Command ⌘ + [ E ]
Increase Edge Detect Percentage	Option ⌥ + Command ⌘ + [ E ]
Toggle Horizontal Flip	Control ⌃ + Command ⌘ + [ H ]
Toggle Vertical Flip	Control ⌃ + Command ⌘ + [ V ]
Rotate Clockwise	Control ⌃ + [ R ]
Rotate Counter Clockwise	Control ⌃ + ⇧ [ R ]
Decrease Crop Percentage	Control ⌃ + Command ⌘ + [ C ]
Increase Crop Percentage	Option ⌥ + Command ⌘ + [ C ]
Decrease X Distortion	Control ⌃ + Command ⌘ + [ X ]
Increase X Distortion	Option ⌥ + Command ⌘ + [ X ]
Decrease Y Distortion	Control ⌃ + Command ⌘ + [ Y ]
Increase Y Distortion	Option ⌥ + Command ⌘ + [ Y ]
Toggle Keep Settings on Relaunch	Control ⌃ + [ K ]
Processing Tab	Control ⌃ + [ 1 ]
Geometry Tab	Control ⌃ + [ 2 ]
Settings Tab	Control ⌃ + [ 3 ]
Minimize	Command ⌘ + [ M ]
Muilt-Image Sample Window	Control ⌃ + [ M ]
Stock Preset Builder Window	Control ⌃ + [ S ]

Evaluate all images in a folder together and process them with uniform color processing.

The Multi-Image Sample tool uses the combined information from all files in a given folder to achieve more accurate overall results, while maintaining differences between frames as they were captured in-camera. This tool is excellent for:

• Images shot in similar lighting situations as each other.
• Image sets with intentional under- or over exposure.
• Images with colored filters used for effect.

This tool will:

• Represent images accurately as exposed, maintaining exposure and color differences between captured frames.
• Achieve more consistent color and contrast results for a folder of images. For best results the images should be shot in the same conditions and relative exposure, though any correctly formatted images may be used.
• Offer the ability to create a Custom Stock preset for use in individual images in the main window. For example: you run a roll of Kodak Gold 200 through the Multi-Image Sample tool and save a “Gold 200” custom stock preset. You can now use this preset on any Gold 200 image you process in the future, either in this window, or in the main window.

Create a Custom Stock preset to calibrate your scanning workflow.

The Stock Preset Builder takes user supplied reference images to create a Custom Stock preset for using in the application’s Color Engine dropdown. This tool is a highly controlled option, especially useful with reference charts, but also simple enough for beginners to use.

The advantages to this approach are:

• Calibrated dynamic range for every image regardless of content.
• Image interpretation not affected by lens flares, light leaks, dust and scratches, or other anomalies.
• See exposure of your images as captured by the camera and film instead of its individual contrast.
• Repeatable workflows and results for each stock, custom tailored to your specific scanning setup.