 BetterPhoto Member |
What F-Stop should I use? I am shooting with a Nikon FM10 and using Kodak Max 400 film. Is there a general purpose F-stop formula to use based on lighting conditions, still vs. motion, etc.?
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Jon Close |
If your meter isn't functional you can use the "Sunny-16" rule. A subject lit by bright sunshine set the aperture for f/16 and use 1/ISO for the film speed (1/400 or 1/500 for ISO 400). For progressively dimmer conditions you open up the aperture to f/8, f/5.6, ... See http://www.camerareview.com/templates/sunny16.cfm Suggested exposures based on the Sunny 16 rule are often printed on the inside of the film box. If the meter in your FM10 is functioning you set the aperture and shutter speed so that the green dot is lit in the viewfinder. If the "+" is lit that indicates overexposure and you need to select either a faster shutter speed and/or smaller aperture (larger numbers for each). If the "-" is lit that indicates underexposure and you have to set either slower shutter speed or larger aperture (smaller numbers).
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