Two Images (short: TI) is a simple Add-on that allows you to compare two images on the x or y-axis through a slider.
You can compare images, render slots and the viewer output with each other.
The Add-on works currently with different Color Spaces of the Image Settings (and most of the View Transforms) but only with sRGB in the Display Device Settings of Color Management.
A separate Version for users of ACES (for example: OpenColorIO ACES) has been released. The focus of the ACES Version is to compare Render Slots. Like in the normal Version, when you change the image View Transform, you have to reload it by pressing Comparision or pressing the render button again.
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After selecting an image in the Image Editor, you can activate the Add-on:
Select an image for comparison:
Change the axis:
Change the Position:
If you have Render Result selected, you can change the slot and compare different Render Slots or Slots with other images:
Change the Color of the Separation Line:
Suppose the Viewer (Composition Node) has a different scale (Composition Node: Scale) instead of the original scale of the input render layer. In that case, it will appear smaller or larger in the original space of the Image Editor.
This limitation comes from Blender's representation/projection of the Viewer in the Image Editor.
If you update the Viewer, the Viewer Node is selected in the interface of TI. You must press Comparison to deactivate and then activate the comparison or reselect the Viewer Node in the associated area.
If the image appears black, move the position, and it will get reloaded.
If you are a User of ACES, a complete installation is required.
Depending on your distance, the image has a small offset.
Version 1.0.1: Release 16.07.2022
You can now compare different Render Slots with each other.
Version 1.0.2: Release 17.07.2022
Bug Fixes and Color Corrections added.
Version 1.0.3: Release 18.07.2022
Bug Fixes, more Color Corrections added and a more precise interpolation (not ideal).
Slot Selector updated. You can easier choose between Slots, and they are dynamically updated to your current Slot number.
Small UI Improvements.
Version 1.0.4: Release 19.07.2022
Added a fast Selector for Render Result and Viewer Node.
Version 1.0.5: Release 20.07.2022
Warning Label added when a slot is empty.
Version 1.0.5 for ACES: Release 21.07.2022
An ACES Version (when you replaced your Color Management Settings/Folder with ACES) was released. Plus another Preset.