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Why is photo cropping discouraged?
Exactly how does it affect synthing? How can you identify the effect in the synth? Perhaps it has something to do with focal length? Perhaps something else...
Will this "fix" work?: In Photoshop, make a copy and crop the image (and straighten, if necessary); paste this back into the original; next perform a FreeTransform scale to size the image back to fill the entire frame. Note: this works, provided the copy/straighten doesn't significantly alter the aspect ratio. So, the final image has the original metadata (e.g. focal length) and aspect ratio.
TIA.
Will this "fix" work?: In Photoshop, make a copy and crop the image (and straighten, if necessary); paste this back into the original; next perform a FreeTransform scale to size the image back to fill the entire frame. Note: this works, provided the copy/straighten doesn't significantly alter the aspect ratio. So, the final image has the original metadata (e.g. focal length) and aspect ratio.
TIA.
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Inappropriate?Swami, this old thread may provide a few clues for you.
1 person says
this answers the question
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Inappropriate?Perfect! Tnx a lot, Nathanael. So, it's mostly a "center of image"/object position calculation issue, plus a little focal length matter. Know I know:)
I’m informed.
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Inappropriate?No problem.
Also, if you're going to truly be doing major surgery and there's just no way that the EXIF data will line up with the crop, you could just copy the pixels in Photoshop and save them in a new image. Presumably this strips out all metadata (not totally sure what Photoshop's protocol is there) and there wouldn't be any discord between the pixels and the metadata.
On the downside, though, Photosynth does much better when EXIF is present (and accurate, naturally).
I’m happy to help.
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Inappropriate?Tnx Nathanael. This idea had cropped my mind, i mean, "croSSed" my mind, and I did consider that EXIF is better, but Photosynth can determine focal length/center sometimes. Would be interesting to do a test: synth some EXIF fotos, then synth the same fotos, but w/ EXIF removed (pretty sure I saw an app to strip the metadata). Hmmm, if I actually do this test I'll post the results. Would the forum be a better place for such?
Tnx, again , as always:)
InquisitivelYours,
swami_worldsynther -
Inappropriate?I'd definitely be interested in your results. I'm sure I'll find it either way.
I’m curious.
