Lightroom Classic: Trouble with Canon 5d Mark III aspect ratio

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  • Problem
  • Updated 5 months ago
  • Not a Problem
  • (Edited)
Today I imported RAW images I shot on the Canon 5d3 with the camera set to Add Cropping Information set to 4:5 ratio. Crop lines are displayed on the camera LCD but you see the full frame outside of the crop when review files. Alarmingly, when I imported them to LR 4.1 RC, the images appeared cropped to 4:5. I though ok, I'll just go to the crop tool and I will see that a crop has been applied and I'll remove it. Unfortunately, there was no file beyond the crop lines, it could not be removed as far as I could tell. I called Canon and they told me to try Digital Photo Professional, a program that I never pay attention to. Sure enough, the images were intact when viewed there. There appears to be a bug when LR 4.1 RC encounters the crop tag on the raw file.
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evan

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Posted 7 years ago

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LRuserXY

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This is a general problem that also applies to other cameras as well, e.g. compact cameras like Canon G12, Olympus E-PL1, etc. - and probably future DSLRs that have the same feature.

With that in mind, I think it is a duplicate of http://feedback.photoshop.com/photosh...

P.S. The raws can be fixed using exiftool with option -m and the tags aspectratio, aspectframe, CroppedImageWidth and CroppedImageHeight (depeding on camera), but this may be risky depending on the raw format.

P.S. II: Proposal: Instead of "hard cropping" such raws, LR should apply a "soft crop" using its standard cropping tool on import. Using this method, the information in the metadata is not lost, but can be overridden anytime by the user. Furthermore, the crop tool can be modified that it contains "Original" (= crop as the camera settings) and "Full Frame" (= whole raw image area). A reset of the crop tool or the develop settings should revert it to "Original".

However, I see a problem here for photos already imported in LR3+4 using "hard cropping" because they have to be converted to "soft cropping", taking into account existing "soft cropping" and the coordinates of local corrections. Tricky, but should be manageable.
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evan

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How could this be intended behavior? It's destructive editing! Doesn't that go against the principle of Lightroom and working in RAW? Why make anything that can't be undone? The camera is sending all of the information and Canon's software, Digital Photo Professional, gives you the entire file. Obviously that is the intention of the camera manufacturers. It must be a simple issue of how LR choses to read a meta tag. I think Adobe should re-evaluate it's position on this and give the user the option. Otherwise the feature on the camera is not usable. I am a magazine photographer. I shoot a few covers and full page photos and I need to be able to shoot to layout. With 4x5 crop lines shown on my LCD, I am reasonably close to the correct format. But I can't use this feature if LR is throwing away information! Please reconsider!
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evan

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My point is that they could have saved even more time by not changing the way it used to work. I do not think you can conclude that implication from his comment. If that's what he meant, he should say so.

For me the crop marks in the camera are vastly important. It effects how I shoot. The shoot is irreversable. If you don't shoot a job they way it needs to be done, you can not always reverse it. In the past I have had custom focusing screens with crop marks but you can't change the screen in the new 5DIII.

It's better not to implement a feature than to implement it partially.

I don't use the de-fringing controls much. For the lenses I have, I don't find them very necessary

We all have our own priorities. If this is not a priority for you, why are you following this thread?
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Lee Jay

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What was changed? I wasn't aware of a change here.
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evan

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LR 3 ignored camera crop information and did not apply it to the RAW. LR 4 crops the raw. That is the change they implemented. You can read Timo's post here: http://gsfn.us/t/2v4fr
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LRuserXY

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That is not exactly true. LR3 already used the camera crop information to crop raws, e.g. for Olympus XZ-1 or Canon G12. There was no general change - at least not from LR3 to LR4. However, it could be that there were changes for specific camera models.
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Lee Jay

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That was my understanding as well, but I admit I'm not completely up on this so maybe, like you said, there was a change regarding some cameras or something.