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Author Topic: Bizarre grid "pattern" with Rebel t3i/600d  (Read 6509 times)

silvestography

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Bizarre grid "pattern" with Rebel t3i/600d
« on: June 12, 2013, 08:34:33 PM »
Hey forum,
I've noticed this really weird square, almost signal noise looking pattern on photos from my t3i recently that I'm not quite sure how to describe or explain.

For reference, check out this B/W image:
http://silvestography.tumblr.com/post/50593894995/another-one-from-le-mont-saint-michel-i-would

If you look especially in that stone "frame" area around the statue, you can see there's this grid pattern where the gridlines are sharper-looking than the insides of the squares. My bet is this is normal and has some very scientific explanation but I just wanted to see if anyone else was experiencing this. Thanks!
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Bizarre grid "pattern" with Rebel t3i/600d
« on: June 12, 2013, 08:34:33 PM »

LetTheRightLensIn

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Re: Bizarre grid "pattern" with Rebel t3i/600d
« Reply #1 on: June 18, 2013, 09:07:13 PM »
Hey forum,
I've noticed this really weird square, almost signal noise looking pattern on photos from my t3i recently that I'm not quite sure how to describe or explain.

For reference, check out this B/W image:
http://silvestography.tumblr.com/post/50593894995/another-one-from-le-mont-saint-michel-i-would

If you look especially in that stone "frame" area around the statue, you can see there's this grid pattern where the gridlines are sharper-looking than the insides of the squares. My bet is this is normal and has some very scientific explanation but I just wanted to see if anyone else was experiencing this. Thanks!

??? I don't see any grid pattern. Is it your monitor??

Mt Spokane Photography

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Re: Bizarre grid "pattern" with Rebel t3i/600d
« Reply #2 on: June 18, 2013, 09:17:22 PM »
I also can't see what you are describing.  There is a annoying change in brightness when I place the mouse on the image or move it away.

Arkarch

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Re: Bizarre grid "pattern" with Rebel t3i/600d
« Reply #3 on: June 18, 2013, 09:51:44 PM »

I dont see it on my at-office monitor.  I'll take a look on the PA-271 when I get home.

If the area is greatly 'pushed' from of lower exposure values / long exposure, you might be seeing an echo of your camera's sensor.  Organized noise. 

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Arkarch

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Re: Bizarre grid "pattern" with Rebel t3i/600d
« Reply #4 on: June 19, 2013, 03:11:01 AM »

I think I see it.  This is one of those deals where once you see it, you'll never not see it.   Probably what I mentioned above.
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Pandypix

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Re: Bizarre grid "pattern" with Rebel t3i/600d
« Reply #5 on: June 19, 2013, 05:13:26 AM »
On my iPad there is no grid even when I zoom right in.
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SwissBear

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Re: Bizarre grid "pattern" with Rebel t3i/600d
« Reply #6 on: June 19, 2013, 05:24:22 AM »
a 1:1 crop might help?
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Re: Bizarre grid "pattern" with Rebel t3i/600d
« Reply #6 on: June 19, 2013, 05:24:22 AM »

silvestography

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Re: Bizarre grid "pattern" with Rebel t3i/600d
« Reply #7 on: June 19, 2013, 05:44:14 PM »

I think I see it.  This is one of those deals where once you see it, you'll never not see it.   Probably what I mentioned above.

Yeah it's super subtle but the first time I saw it in an image I could never "un-see" it in the rest of my images. And I think you are probably right of it being just typical signal noise but it seemed bizarre that it would show up in that organized of a pattern.
http://silvestography.tumblr.com
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PhotographAdventure

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Re: Bizarre grid "pattern" with Rebel t3i/600d
« Reply #8 on: June 19, 2013, 09:14:43 PM »
not sure what to look for.  I see brick patterns, textured stone, pretty gritty textured wall overall.

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Re: Bizarre grid "pattern" with Rebel t3i/600d
« Reply #8 on: June 19, 2013, 09:14:43 PM »