how does it work f/ss

Discussion in 'Photographic Discussions' started by mysteryscribe, Dec 20, 2006.

  1. mysteryscribe

    mysteryscribe TPF Noob!

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    This is the easiest and the hardest concept to grasp. It is also the most important.

    We have all filled a container from the sink. If we turn the faucet volume(aperture) on full it takes a certain amount of time (shutter speed) to get the desired amount of water in the container (exposure).

    so in photography it is the same aperture x shutter speed = exposure Remember the contain from our ealier tips being the same as correct exposure.

    axs=e

    Or we can go with less volume for a longer time

    1/2a x2s=e

    If we cut the volume in half we have to double the shutter speed. To make it easy each fstop you cut the light volume you can double the the sutter speed. I told you it was confusing.

    f22@1/100 is the same as f16@1/200 is the same as f11@1/400 same as f8@1/800 same as f4@1/1600

    so if they are all the same what difference does it make. Well each combination has a different effect on the image.... Next what are the effects....

    Jump in guys and feel free to improve or correct
     
  2. Torus34

    Torus34 No longer a newbie, moving up!

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