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Thread: minimum shutter speed for focal length

  1. #1

    Default minimum shutter speed for focal length

    i understand that if we use focal lenght of 50mm, then the minimum shutter speed will be 1/focal length, that is 1/50s.

    so focal length of 100mm, will be 1/100s

    focal length of 35mm, will be 1/35s, etc

    so the question is, are the above formual base on full frame or crop camera, or both?

    thanks.

  2. #2
    Senior Member Leong23's Avatar
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    Default Re: minimum shutter speed for focal length

    Quote Originally Posted by takengo2003 View Post
    i understand that if we use focal lenght of 50mm, then the minimum shutter speed will be 1/focal length, that is 1/50s.

    so focal length of 100mm, will be 1/100s

    focal length of 35mm, will be 1/35s, etc

    so the question is, are the above formual base on full frame or crop camera, or both?

    thanks.
    This formula is use for 35mm or FX sensor, so if using crop sensor, do multiplex the crop factor.

  3. #3

    Default Re: minimum shutter speed for focal length

    It's based on full frame 35mm sensors.

    So for cropped bodies, it's 1/(focal length * crop factor).

    Eg, using a 1.6 crop body @ 50mm. Minimum recommended shutter speed would be

    1/(50*1.6) = 1 / 80 s. Cheers.

    It's just a guide anyhow. I get away with doing 1/50 on my crop body...it all depends on how stable your handling is, and use of supports. Higher focal lengths more difficult to handle.

  4. #4

    Default Re: minimum shutter speed for focal length

    thanks to both of you, so it is for full frame.

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