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Testing Shutter Lag

Discussion in 'Photography Forums' started by Garrett, Dec 7, 2004.

  1. Garrett

    Garrett
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    It was shown on the Gadget show how to roughly test the shutter lag on you camera. Get some paper and make a pointer put it on a turntable at 33 1/3 rmp. Have the pointer pointing outwards. When the pointer reaches the 12o’clock position click the camera and see where the picture is taken.

    I just tested mine and here are the calculations 60/33.33 equals 1.8 seconds per rev. as mine was about 7.5 minutes position on the turntable(1.8/60)*7.5 equals .225 of a second lag.
     

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  2. dolph

    dolph
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    This needs more qualification -

    for example are you pre-focusing if using auto-focus, or indeed are you using manual focus.

    Also your photo Garrett appears to have been taken with quite a large shutter time?

    Unfortunately I don't have a turntable to test this (what are they anyway... some old fangled thing no doubt...?! Can I use a cd player!!?!) but am pretty sure that pre-focused my Canon A80 would be quicker than .225 seconds.

    Reviews at Steves-Digicams normally give a good indication of shutter lag.
     
  3. monocrider

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    More to the point, how do you know you pressed the shutter at the precise moment the arrow reached 12 o'clock ? Surely you could easily be 0.1 seconds or more either way because of human error ?
     
  4. Blu Ray

    Blu Ray
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    Also, not many people have turntables any more, I certainly havent had one for nearly 20 years!
     
  5. paulc1

    paulc1
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    my fuji finepix s602 has a shtter lag of about 1 week, even if you pre focus, it looks like a great idea but somewhat approximate :).
     
  6. HotblackDesiato

    HotblackDesiato
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    If you've a digital watch hanging around start its stopwatch and just take a snap say when it reaches 10sec, the time displayed in you're piccie will give an _idea_ of lag.
     
  7. Crocodile

    Crocodile
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    What's the point?

    If you are forever missing shots then you already know that your camera suffers from delay. Or is the idea that next time you pop into Jessops for a demo, you go equipped with a turntable under your arm? :laugh:

    As Andrew said, the figures are readily available anyway....
     

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