The image crops but what about..

Discussion in 'Beyond the Basics' started by adamwilliamking, Apr 27, 2009.

  1. adamwilliamking

    adamwilliamking TPF Noob!

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    If you're using a lens built for a full frame series and using a crop sensor its obvious that the lens crops your image for you. Some peoplle hate it I tend to like the DX sensor to full frame crop and the farther reach..but!

    Does using the FX lens on my crop sensor change anything about the closest focusing distance?

    What about anything else in the lens construction?

    Thanks in advance!

    A
     
  2. gryphonslair99

    gryphonslair99 Been spending a lot of time on here!

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    No. Focal length is focal length. The size of the sensor does not change that.
     
  3. KmH

    KmH Helping photographers learn to fish Supporting Member

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    There is no increase in the reach just the POV (point of view) which makes it LOOK like an increase in the reach.

    It's the same effect as when you crop an image in pp.
     
  4. dcclark

    dcclark TPF Noob!

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    As long as you remember to convert the focal length to account for the apparent change in focal length, you'll be all set. As others have mentioned, there is no actual change in focal length: the phrase usually used is something like, "A 50mm DX lens gives the same field of view as a 75mm lens on a full frame camera."
     
  5. Dwig

    Dwig TPF Noob!

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    No, the lens does nothing to "crop" the image. Relative to using the lens on a FX sensor, the DX sensor does the cropping.

    No, nothing about the body alters ANY attribute of the lens, ever. Focal length, minimum focusing distance, f/stop, ... all remain the same. The only things that differ are things where the lens and body interact. Primarily, the angular field of view.
     

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