 Russell C. Amidon |
Camera Meter Calibration I was checking the calibration of my camera's meter (Canon 30D), using the Sunny f/16 rule and found my meter showing a full stop (+1) overexposure. Settings were manual, av= f/16, tv= 1/100, ISO=100. The problem is, that I cannot change my ISO lower than 100 to get the meter to read correctly. The only option I have been able to come up with is to the set the Exposure Compensation to (-1) and leave it there. After taking some sample pictures however, I found the images to be a bit underexposed, but leaving the exposure compensation to zero, and shooting in P, AV, or TV mode, the histogram is pretty much centered. Am I going down a wrong path or does someone have some advise on this matter? Thanks for taking the time to answer. Russ
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- Carlton Ward Contact Carlton Ward Carlton Ward's Gallery |
Hi Russell, It sounds like you have it figured out but once I select my preferred DOF, I just adjust my exposure with the shutter speed. I sometimes under-expose a bit as it is easier to recover under-exposed areas than it is to recover blown highlights. As long as I am not shooting high ISO, there is some leeway adjusting exposure using ACR in Photoshop. Still best to nail it at capture but nice to have post-editing options :) Cheers, Carlton
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John H. Siskin |
Hi Russ, Your camera meter uses a very sophisticated sensor design to meter for the most important areas of the frame. The sunny 16 rule is a very rough approximation of light, not nearly as accurate as your meter. Use the meter outside. If you ever work in the studio use the histogram and tether the camera to the computer to build the best lighting. Thanks, John Siskin
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Russell C. Amidon |
Thanks Carl and John for your response. I think I'll take both of your comments and trust in the meter, and just make sure that I haven't blown out any highlights. Thanks again for your help. Have a Great Day, Russ
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