Browse guide chapters
User guide
Learn to import film, convert negatives, edit photographs, and export files. Start with the introductory tutorial or find the feature you need.
Install and launch
macOS: download the DMG from this site, drag SoftLoaf Negative to Applications, then launch it. Requires macOS 14 or later and Apple silicon.
Windows: follow the official Microsoft Store link on the download page. Acquisition depends on the current market and publication status.
Official downloads and system requirements · Installation support
If an integrity or system-security warning appears, check the source and contact support; do not bypass the warning. If the app is installed, continue with your first project.
New to SoftLoaf Negative?
Work through one roll, from import to export, to learn the basic controls.
Complete your first project →Before importing: check capture conditions and roll grouping →
By film type: Color negativeB&W negativeReversal
Three spectral captures: Trichrome, from theory to practice →
Follow the workflow
Start with Your first project for a complete walkthrough. Open the lessons below for more detail on a step. Use flat-field correction and a dedicated CCM when needed; neither is required for every project.
- Prepare consistent camera capturesIf your digitized files are ready, go straight to the first project.
- Your first project: import, edit, and exportStart by choosing a film type, then work through import, conversion, and export.
- Build flat-field correctionOptional. Use matching flat-field references to correct uneven brightness and color.
- Create and apply a CCM profileOptional. Make a profile from a chart photographed with the same camera and light.
- Set the negative Calibration AreaCheck negative analysis areas; skip this for reversal.
- Choose a negative conversion methodUse a roll method for color negatives; B&W uses Invert and reversal needs no inversion.
- Adjust density, white balance, and toneAdjust tone and white balance for individual photographs as needed.
- Crop and straighten imagesCheck subject, orientation, and corners, then click Done.
- Export imagesSave the project and export one photograph to check before exporting the rest.
- Save projects and manage cacheCheck that the project reopens, and back up the originals and complete project bundle.
Input and calibration
- Build flat-field correction →
Flat-field correction reduces uneven brightness and color caused by the light and lens. It uses a uniform reference photographed without film and is separate from white balance and lens distortion correction.
- Create and apply a CCM profile →
Calibrate your capture setup with a transmission chart and save the result as a CCM profile. This corrects color differences introduced by the camera and light; it is not a film look or the in-roll Color Chart method.
- Correct lens distortion →
Use a lens profile or manual settings to correct distorted lines, then crop any empty edges left by the correction.
Negative conversion
- Set the negative Calibration Area →
Choose which parts of a negative the app should analyze. Keep perforations, the light source, and damaged edges out so they do not affect conversion. Use Crop separately for final framing.
- Understand dmin, dmax, and characteristic curves →
Film density describes how much light the film blocks. dmin and dmax mark its low and high ends; the characteristic curve describes how density changes with exposure.
- Choose a negative conversion method →
Roll-based methods are the usual choice for color-negative conversion. Here is how to choose between them and why independent per-frame fitting is not recommended for routine use.
- Use a chart reference within a roll →
A chart photographed on the film can help guide conversion of the roll. Mark the chart frame, then check that the patches are correctly identified.
Edit and batch
- Adjust density, white balance, and tone →
Adjust tone, white balance, and curves for the current photograph. If the same cast affects the whole roll, check input and conversion settings first.
- Crop and straighten images →
Remove unwanted borders, set the aspect ratio, and straighten the image. This crop is used for preview and export.
- Copy and apply settings in batches →
Copy settings from one photograph to others. Paste only the groups you need, such as white balance, without replacing individual exposure edits or crops.
- Choose a View and use LUTs →
View sets how the image is rendered for viewing. A LUT can further change color and tone, but must match the data it receives.
Export images
Other tasks
- Process reversal film →
Reversal film is already positive and does not need negative conversion. Use a Reversal project, check input and calibration, then adjust exposure, white balance, and framing.
- Process black-and-white negatives →
Invert black-and-white negatives in a B&W project, then adjust grayscale and framing. There is no need to demask them as color film and remove saturation afterward.
- Retain and render negative perforations →
You can keep film borders and perforations in the finished image while excluding holes from negative analysis. This page covers identification and sampling.
- View images in Light Table →
Light Table offers single-image and multi-image viewing. Zoom in to inspect detail or arrange photographs side by side.
- Receive new images with a hot folder →
Watch the folder used by your capture software and add new photographs to the project automatically.
Trichrome capture
- Understand Trichrome capture →
Photograph the same film frame separately under red, green, and blue light, then combine the records into one image. The diagrams and examples below explain how this differs from a single capture.
- Capture and organize RGB triplets →
Capture each frame in red, green, blue order. Keep the camera settings and each light’s intensity fixed across the roll, then check the file order.
- Import RGB triplets →
Combine each set of R, G, B sources into one frame. Choose the film and sensor types before importing, then check the count, channel order, and alignment.
- Create a Trichrome CCM →
Make a Trichrome CCM from three chart images captured with the same setup and lights as the film. Single-shot, Bayer three-shot, and Monochrome three-shot inputs use different profiles.
- Compare white light, simultaneous RGB, and three-shot capture →
Compare three capture methods using the black-cow photograph. First look at the change in illumination spectrum, then at the change to three separate exposures.
Save, advanced settings, and help
- Save projects and manage cache →
Save your edits, back up originals, and view or change the cache location. Sources, projects, and exported photographs serve different purposes and should be kept separately.
- Input color (advanced, optional) →
This is an optional advanced setting, not a prerequisite for using the app. Usually, leave Automatic selected. Use this chapter when you have a suitable custom input ICC or need to check how an RGB file was prepared.
- Troubleshoot common issues →
When something goes wrong, read the current status and complete error message before changing settings. Start with the common cases below.
Look up interface terms
Find definitions for CCM, Calibration Area, Per-frame AE, and other control names.
Interface terminology →