One thought, if you are comparing an image that has been reset, reset doesn't actually reset the image to how it was when it was imported, it resets the image as though you are importing it again. So if anything has changed from the time you first imported the image (such as the newer version of LR that might be using different profiles) there might be a difference. An example I ran into recently, if you change a camera default to apply some modified settings (such as a different profile) , all you have to do to apply that new default to images already imported is to reset them.
Random thought. I just imported a series of images, made some changes to a few, reset them, and then compared, and I'm seeing identical before afters.
You are right. But, if you have time, I would appreciate if you could do the following test:
- take any image that includes some dark tones.
- do any edits you like, or pick any of the edit steps you may have done already.
- make a snapshot, call that 'before'. Apply that snapshot, so your 'before' edit step is marked.
- do any series of additional edits.
- recall the snapshot ‘before’.
- make at that step a snapshot called ‘after’.
- right click on the snapshot step ‘before’ and make that the before state.
- click on snapshot after.
- the screen displays the after state.
- press the “\” key: the screen now shows the before state.
- use the eyedropper tool and pinpoint to any position in the image.
- the Lab or RGB values show the before and the after values. They are identical, as they should.
- do the same in a dark area of the image. The Lab or RGB values before and after are identical, as they should.
- So, the before and after data are identical, as they should.
- Now, make sure your screen background is dimmed, and toggle the “\” key repeatedly.
If you don’t see any difference in the dark tones of the image, your system does not show the problem Mark and I are seeing. Please tell us your secret.
If you do see a difference, somewhere there is an annoying editing problem, because we edit with our eyes, and not with numbers.
Cheers,
Boudewijn Swanenburg