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DPChallenge Forums >> Hardware and Software >> 20D shots darker than a D300 - Why?
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Showing posts 1 - 7 of 7, (reverse)
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 12/04/2007 01:35:26 PM · #1
I was assisting on a shoot this past weekend where my friend would be shooting with her 20D. I brought along my D300 to do some test shots while setting up the lighting. Though I had my 50mm 1.8 on the camera, I set my aperture/shutter/ISO to match what she would be using (20D, 18-55 kit, f/5, 1/60, 200ISO). When she arrived, I set her camera to the exact same settings but the resulting photos were easily 1-2 stops darker.

With all of the variables controlled, shooting both cameras in full manual, should there be a difference in light between a D300 and a 20D?

12/04/2007 02:00:04 PM · #2
Two explanations that come to mind for me are:

-perhaps the one of the lenses is "cheating" on its aperture value, and is actually stopped down a little more than its saying
-the sensors may have different base sensitivities, as in, ISO100 on one is more like ISO140 on the other.

Combine a couple factors like that, and you'll be off by a stop or two, easily. Unfortunate, but not uncommon.
 12/04/2007 02:20:19 PM · #3
Yeah iso between nikon and canon are not the same.
 12/04/2007 02:24:12 PM · #4
What about the Active D-Lighting setting on your D300? Was that on or off? I imagine that would make a difference too. (I'm not familiar enough yet with all the bells and whistles but this one did just spring to mind.

Originally posted by ShorterThanJesus:
I was assisting on a shoot this past weekend where my friend would be shooting with her 20D. I brought along my D300 to do some test shots while setting up the lighting. Though I had my 50mm 1.8 on the camera, I set my aperture/shutter/ISO to match what she would be using (20D, 18-55 kit, f/5, 1/60, 200ISO). When she arrived, I set her camera to the exact same settings but the resulting photos were easily 1-2 stops darker.

With all of the variables controlled, shooting both cameras in full manual, should there be a difference in light between a D300 and a 20D?
12/04/2007 02:31:02 PM · #5
Active D-Lighting wasn't on, good though though.

Just had a brainstorm (and called her up to confirm it)... she had forgotten to remove the polarizing filter from the lens. That explains it.

Thank you for your help nonetheless.
 12/04/2007 03:22:38 PM · #6
.

Message edited by author 2007-12-04 15:23:57.
 12/04/2007 03:23:36 PM · #7
Originally posted by ShorterThanJesus:
she had forgotten to remove the polarizing filter from the lens. That explains it.


Definitely explains it :-D
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