Old 07-16-2008, 08:12 PM   #1
John Fladung
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Default Best way to check for "dead" pixels?

Should I take a photo with the lens cap on then zoom in heavily in PS?

Or is there a better way?
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Old 07-16-2008, 09:11 PM   #2
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Quote:
Originally Posted by John Fladung
Should I take a photo with the lens cap on then zoom in heavily in PS?

Or is there a better way?
I believe that dead pixels are an issue with displays, not cameras. On an 8 MP camera, one dead pixel isn't going to be a problem...

On a display it's pretty obvious... look at a white screen and a black screen.
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Old 07-16-2008, 09:19 PM   #3
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John-


I think that shooting against any black/ very dark surface should do it. And, sharpen it in your software.
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Old 07-16-2008, 09:35 PM   #4
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Quote:
Originally Posted by John Fladung
Should I take a photo with the lens cap on then zoom in heavily in PS?
That'll work. I find dead pixels occasionally, but it's nothing the clone tool can't handle.
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Old 07-17-2008, 05:46 AM   #5
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When you check just make sure your sensor is clean as any light and dust can create spots that can look like dead pixels. Also make sure your monitor is clean and don't confuse dead pixels with electronic noise. Take a few shots to compare and see which is which.

Brian
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Old 07-17-2008, 01:44 PM   #6
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Quote:
Originally Posted by Mustang11
When you check just make sure your sensor is clean as any light and dust can create spots that can look like dead pixels. Also make sure your monitor is clean and don't confuse dead pixels with electronic noise. Take a few shots to compare and see which is which.

Brian
Dead pixels and dust/dirt spots look nothing alike.
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Old 07-17-2008, 03:26 PM   #7
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Default Test for dead and hot pixels

John,

Try this

http://www.starzen.com/imaging/deadpixeltest.htm

It's free!

Alan
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