This isn’t something I use much, but if it was honored by my raw editor I might find more use for it. That is, setting the crop in-camera for compositional purposes, then seeing that crop automatically applied in ART (or darktable, etc.). Here’s how it looks in Canon DPP:
In practice I try to compose in-camera, but I usually end up hedging a bit and zooming out just a tad before shooting (to give myself wiggle room once I see the image on my computer). But with this I could be more exact in-camera.
Again, not something I’ve lost any sleep over and I have no idea if it’s trivial or complex to implement. Just curious. I assume it’s non-proprietary as I’ve seen videos where it’s done in LR (not just the camera maker’s software). FWIW, I opened these images in darktable and the crop wasn’t honored there, either.
I’m reading this on my phone with just-recently-awake eyes and brain so I’ll need to read again once I’m fully alert, but… it looks like it’s possible to have a dynamic rule recreate the crop when it finds the appropriate tags.
I made a brief attempt at finding the correct (i.e., complete hierarchical) exiv2 tags / names for my CR3s but was unsuccessful. I have the partial profiles created and they work, but don’t load automatically.
Initially, using exiftool I thought the correct tags were:
But the ART tooltip says the exiv2 syntax is required (which makes sense, given it’s using exiv2) and I can’t locate these tags with exiv2. There are a few similar tags, but I’ve not yet tried them all. Plus, I can’t find the fully qualified names, which I assume are required. Exif.Canon.<whatever> doesn’t work. There’s nothing obvious in the Metadata panel, either.
I’m apparently doing something wrong, so I need to read / Google more. I’ll have another go at it later – Too much else I need to get done at the moment to spend time on this. I just got home Thursday after a week away from home and have catch-up to do…
Yep, I went down that road a bit but I must be blind. I thought the correct tags were the Canon MakerNotes (Exiv2 - Image metadata library and tools) for 4:3, 16:9 and 1:1, respectively:
…which looks right, but it doesn’t automatically apply. The camera name is copied from other rules which do work (and matches exif) so it must be the tags.
Then again, if exiv2 truly doesn’t report on Exif.Canon.CroppedImage* tags (which I find far less likely than me making a mistake!) it won’t work anyway. But that’s how it looks, superficially at least:
I swear I tried it earlier (in fact, I know I did) and it didn’t work as a single tag. But now it does. Maybe I had errant characters in there or something. I even restarted ART between edits. But it works now!
So, for the benefit of anyone else with a Canon T8i / 850D (and maybe their other 24 mp sensor cameras?), here are the tag pairs:
If you use dynamic profiles and do clear, it will open the photo with the last used initial profile, I think. You should use Reset to default for testing, or even better completely unused photos to be sure.
On a side note to your original post. This wiggle room becomes critical when applying lens correction or perspective correction as some of the image is lost using those processes.
Good point, particularly perspective correction. In-camera cropping will tend to usually provide a little margin for error since the crop is virtual until applied in the raw editor. However, that’s true typically only along one axis, as the other is maximized as far as the aspect ratio will allow.
I was surpirised how much is lost with a straight JPG out of my camera compared to what exists on the edge of the frame in the RAW file. I presume the camera’s jpg has lens correction applied and this accounts for that.
So … can we talk userfriendliness for a moment? … yes you can do a lot of manual work … or we could have a checkbox for “apply vendor crop” … and it would be something that makes it 10x more usable for a beginner user than having to jump through all the hoops. and i would bet you it isnt that many lines of code to implement it.
and I have no idea if it’s trivial or complex to implement. Just curious. I assume it’s non-proprietary as I’ve seen videos where it’s done in LR (not just the camera maker’s software). FWIW, I opened these images in darktable and the crop wasn’t honored there, either.
