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Keep Shooting! Photography Assignments (04 Feb 2013)

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ISO issues

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5 years 3 months ago #1118 by Josh Waters
Is there any way to check and see if ISO is properly calibrated. After a particular outing, when some wierd things started happened on my camera I then noticing I have to turn my ISO up to get the speeds i normally got without having to do that. I emailed Nikon but just went in circles. I've reset all the normal things. My inside shots are incredibly slow without pumping the ISO, and i don't remember it being as big of an issue before.

How do you check for proper calibrations?
Is it possible to even throw ISO out of calibration?
maybe i'm crazy... :silly:woohoo:

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5 years 3 months ago - 5 years 3 months ago #1119 by Scott St.Cyr
The first thing that comes to mind is your aperture. If you're in Aperture Priority mode(or manual), then you may have left your aperture stopped way down (f16-f22) accidentally. You would have to have your ISO way high to compensate for that in lower light. Double-check that and let us know.


Scott
Last Edit: 5 years 3 months ago by Scott St.Cyr.

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5 years 3 months ago #1120 by Scott St.Cyr
One other thing I just thought about is Exposure Compensation. If you mistakenly changed it you may have to compensate with your ISO to get higher shutter speeds. You wouldn't be as far off on your shutter speed with this being changed as you would with the aperture being stopped down, but it's worth checking.


Scott

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5 years 3 months ago #1122 by Gregory Cazillo
I would do some testing with a friend's camera to see if the exposures are close. Make sure you are on manual exposure, similar lens, turn off bracketing and exposure compensation like Scott said. Also make sure Auto ISO is turned off.

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5 years 3 months ago #1125 by Josh Waters
Thanks for you thoughts guys. All of the ideas that were mentioned are good areas to look into. Unfortunatly, I've already looked into all of those settings short of using someone elses camera for comparisons. No bracketing, exposure, auto, aperature issues. Thats why I offered up those specific questions. Is is even possible for ISO to be out of calibration? Maybe, maybe not? Anyone know?

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5 years 3 months ago #1129 by Mistery
I've never experianced anything like that in the past. Could the lighting be that much dimmer than before and you just didn't notice it? Remember bulbs get darker as they age.

D800 w/grip, D700 w/grip,V1,14-24mm F/2.8, 24-70mm F/2.8, 70-200mm F/2.8, 200-400mm F/4, 105mm,F/2.8,35mm F/1.4,35mm F/1.8, 85mm F/1.4,1.7x Tele

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5 years 3 months ago #1137 by Gregory Cazillo
I am guessing you have also tried other lenses? That could make a difference. If anything is out of calibration its probably the light meter. What metering mode is your camera set to?

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5 years 3 months ago #1150 by Tor
Have you -reset all camera settings- and rechecked?

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