 BetterPhoto Member |
apeture and exposure compensation Hi, your site is awesome! I just want to know...I can set my apeture and Exposure compensation manualy, I just want to know when and why I would set them to different settings? Right now I am using black and white film, and I take a lot of pictures of Skating, biking, etc... and I like to mix it with art somehow. So please email me back letting me know why to set these, thanx!
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doug Nelson |
Cameras that set your film's ASA speed automatically, based on the DX coding (the silver and black bar-code on the film cassette)need some way to override this setting. Also, with a totally manual camera, you might have a reason to vary one or more exposures on the roll by a specific amount, so you set the exposure compensation a half stop, a whole stop, etc. under or over the light meter reading. Why would anyone want to deviate from the light meter's reading? Some of these action shots you do might be strongly backlit. If your meter reads the entire frame, even if it's center weighted, the bright sky might over-influence the reading. So, if you want detail in the faces, for example, you'd open up a stop or two. You might shoot an entire roll of black-and-white in a very flatly lighted situation. You can add contrast to your entire roll by underexposing (shooting ASA 400 film at 800, for example)then over-develop the film to compensate. There was a cult following of people in the 70's who shot Tri-X at ASA 200 (over-exposing by one stop) and under developed to get an expanded gray scale. The details of all this have been buried in years of full automation and whirring motors, but some digging in photography books will be rewarding, if your really want to learn total control with black-and-white.
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