I wonder what causes this
Aug 5, 2019 11:57:36 #
larryepage
Loc: North Texas area
Also...most cameras provide two or three choices around the level of compression applied to JPEG files. I don't know Canon's terminology around this. But it's a choice of whether to not compress at all, to compress a little bit, a medium amount, or a lot. How are you set for that. (There's another choice for how much resolution to retain. That would be interesting to know, but it's probably of more secondary interest at this point.)
I'm thinking that one early thing to try, before we even fully understand the problem, is to move to a lower level of compression (bigger saved file) in the interim to see if the problem might go away. No concrete basis for doing that, but if it works, it would verify the problem and give you an interim fix until you decided whether to send your camera for repair...
I'm thinking that one early thing to try, before we even fully understand the problem, is to move to a lower level of compression (bigger saved file) in the interim to see if the problem might go away. No concrete basis for doing that, but if it works, it would verify the problem and give you an interim fix until you decided whether to send your camera for repair...
Aug 5, 2019 13:04:03 #
This is digital not analog so the possibility of an image left on the card is a moot point. It's a very specific shape, a square with a notch in the bottom right corner. Must be in the conversion.
Aug 5, 2019 17:08:57 #
Do the details in the square look like some of them in one of the camera's menu screens? They kind of look like they might be.
Aug 5, 2019 18:49:31 #
Interesting thread.
Lots of Canon users here. Nobody else reported it.
The raw file does not show it. You have tried different SD cards. The problem is happening between the raw and JPG image. That implies a camera processing issue.
Definitely try Canon tech support. Please post results.
Lots of Canon users here. Nobody else reported it.
The raw file does not show it. You have tried different SD cards. The problem is happening between the raw and JPG image. That implies a camera processing issue.
Definitely try Canon tech support. Please post results.
Aug 5, 2019 19:32:03 #
gekko11 wrote:
every once in a while this "noise" shows up in a frame or two. I use a canon 5dmk 4 and a mk3 as well. i used to think it was an artifact from the sd card but it seems to occur regardless of which card i use... it only seems to occur when shot in jpeg not raw. just wondering if anyone else has had this problem
Is this from the Camera Sensor, possibility of dirt or ???
Aug 5, 2019 19:52:29 #
Silverrails wrote:
Is this from the Camera Sensor, possibility of dirt or ???
Not if it only happens in jpgs. This is clearly NOT an analog problem but a digital one.
Aug 5, 2019 19:54:37 #
Aug 5, 2019 20:01:39 #
CatMarley wrote:
Not if it only happens in jpgs. This is clearly NOT an analog problem but a digital one.
Good call cat. And it could be a problem with that camera. Nobody else reported it.
The good news is it does not appear in the raw file.
Aug 5, 2019 20:09:38 #
gekko11 wrote:
every once in a while this "noise" shows up in a frame or two. I use a canon 5dmk 4 and a mk3 as well. i used to think it was an artifact from the sd card but it seems to occur regardless of which card i use... it only seems to occur when shot in jpeg not raw. just wondering if anyone else has had this problem
My friend had a problem with a new camera he was getting many out of focus shots. Very low % keepers. Long story short the solution was a faster memory card. Huh? ???!!! Yep. % keepers (due to focus) went from 20% to +80%
I mention this because you say it only happens with raw+ JPEG which takes more processing time. If the processor is waiting on memory perhaps that is the result.
Might be worth a try buying a faster card. Heck it’s a good excuse to buy the latest greatest card.
Aug 6, 2019 02:38:22 #
Thaz a jpeg artifact. Possibly due to
an overstuffed buffer, too slow card,
or possibly both. If the CPU gets too
hot it slows down and could cause
such a problem.
an overstuffed buffer, too slow card,
or possibly both. If the CPU gets too
hot it slows down and could cause
such a problem.
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