 Frank Goodin |
How to Overexpose or Underexpose Can you tell me if I'm on the right track with this exposure? If I meter a scene at, say, 125 at f8 ... to overexpose would I then change manually to 60 at f8? Or do I have to change the f-stop instead? I'm really confused. Please help, thanks.
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John Wright |
Actually, there are several answers... The way you describe it in your message is completely accurate. If you meter a 1/125@f8 and then change your shutter speed to 1/60, you will let one more stop worth of light in (1/60 is longer than 1/125 - so more light). This would result in an over exposure. If you wanted to under expose, you could change your shutter speed to 1/250, which is faster than 1/125 and would let one stop less worth of light in. Saying all that, you could do the same thing with your f stop. Keeping your shutter speed at 1/125 and changing your f stop to f11, you would let one stop less light into the lens or taking it to f5.6 (under exposing), you would let one stop more light in (over exposing). I hope that helps...
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John Wright |
Actually, there are several answers: The way you describe it in your message is completely accurate. If you meter a 1/125 at f8 and then change your shutter speed to 1/60, you will let one more stop worth of light in (1/60 is longer than 1/125 - so more light). This would result in an overexposure. If you wanted to underexpose, you could change your shutter speed to 1/250, which is faster than 1/125 and would let one stop less worth of light in. Saying all that, you could do the same thing with your f-stop. Keeping your shutter speed at 1/125 and changing your f-stop to f11, you would let one stop less light into the lens (underexposing), or taking it to f5.6, you would let one stop more light in (overexposing). I hope that helps.
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