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Posted: 3/6/2022 3:55:03 AM EDT
I was visiting a castle in Scotland a few years ago and took two pictures of this clock back to back. One photo has a bit of distortion and the other is normal. The pictures taken with a IPhone. Any ideas what could cause this???
 
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Posted: 3/6/2022 10:16:32 AM EDT
[#1]
I’m going with the rolling shutter effect, the same thing that causes the floppy helo blades:
 FRA0C004 Ground Idle by FredMan, on FlickrThe sensor gets read incrementally, resulting in changes in subject. You may not think you moved your phone while shooting the clock, but subtle hand movements combined with slow shutter speeds result in this. https://en.wikipedia.org/wiki/Rolling_shutter |
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Posted: 3/6/2022 1:45:49 PM EDT
[#2]
Quoted: I’m going with the rolling shutter effect, the same thing that causes the floppy helo blades: https://live.staticflickr.com/65535/48746646752_f358a5d3ca_b.jpgFRA0C004 Ground Idle by FredMan, on Flickr The sensor gets read incrementally, resulting in changes in subject. You may not think you moved your phone while shooting the clock, but subtle hand movements combined with slow shutter speeds result in this. https://en.wikipedia.org/wiki/Rolling_shutter Interesting thank you ?????? |
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Posted: 3/6/2022 1:51:30 PM EDT
[#3]
Quote HistoryQuoted: I’m going with the rolling shutter effect, the same thing that causes the floppy helo blades: https://live.staticflickr.com/65535/48746646752_f358a5d3ca_b.jpgFRA0C004 Ground Idle by FredMan, on Flickr The sensor gets read incrementally, resulting in changes in subject. You may not think you moved your phone while shooting the clock, but subtle hand movements combined with slow shutter speeds result in this. https://en.wikipedia.org/wiki/Rolling_shutter That's not it, rolling shutter causes distortion with fast moving objects as the image is "scanned" across the image plane. These photos look like distortions from stitching. OP probably has it in panoramic mode. Distortion is from the seam of left and right side of the image getting stitched. |
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Posted: 3/6/2022 1:55:33 PM EDT
[#4]
There are odd artifacts from some of the portrait modes too
open the image in photos on the phone and hit the "i" button  |
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Posted: 3/6/2022 1:59:23 PM EDT
[#5]
Quote HistoryQuoted: That's not it, rolling shutter causes distortion with fast moving objects as the image is "scanned" across the image plane. These photos look like distortions from stitching. OP probably has it in panoramic mode. Distortion is from the seam of left and right side of the image getting stitched.  |
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Posted: 3/6/2022 2:39:10 PM EDT
[#6]
Quote HistoryQuoted: That's not it, rolling shutter causes distortion with fast moving objects as the image is "scanned" across the image plane. These photos look like distortions from stitching. OP probably has it in panoramic mode. Distortion is from the seam of left and right side of the image getting stitched. Quote HistoryQuoted: Quoted: I’m going with the rolling shutter effect, the same thing that causes the floppy helo blades: https://live.staticflickr.com/65535/48746646752_f358a5d3ca_b.jpgFRA0C004 Ground Idle by FredMan, on Flickr The sensor gets read incrementally, resulting in changes in subject. You may not think you moved your phone while shooting the clock, but subtle hand movements combined with slow shutter speeds result in this. https://en.wikipedia.org/wiki/Rolling_shutter That's not it, rolling shutter causes distortion with fast moving objects as the image is "scanned" across the image plane. These photos look like distortions from stitching. OP probably has it in panoramic mode. Distortion is from the seam of left and right side of the image getting stitched. Phones are getting pretty amazing now, but it's 90% computational photography. Looks like maybe taken in some kind of "portrait" mode too using multiple lens/sensors then got bugged. |
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Posted: 3/6/2022 4:43:02 PM EDT
[#7]
Apple is doing a metric boatload of software computations between the press of the shutter and the photo being saved. Normally, stuff like this would be handled in post processing, but Apple is just trying, and succeeding, in making this stuff as turnkey as possible.
One of the consequences of the turnkey preprocessing is artifacts like what's seen in the trim work at the bottom of the clock. |
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Posted: 3/6/2022 5:34:59 PM EDT
[#8]
I remember a 90s digital camera that made nice images unless tger was a 40 degree sloped plane like a sportscar hood
major jaggies |
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Posted: 3/8/2022 4:27:19 AM EDT
[#9]
The smart-phone makers try to compensate for the teeny-tiny sensor by using AI software. There is a Youtube video on this subject that lasts something like 10 minutes explaining what is going on behind the scenes of a smart-phone cam, it is quite complicated.
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