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rddelliott

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Posts posted by rddelliott

  1. Renaldo:

     

    No need to shout. This is a learning forum for all. I have both a 400D and a 5D. If I take a picture with both cameras with a 400mm lens attached, is the image any larger with the 400D or is it just cropped due to the smaller sensor? Have I increased the size of the image or just changed the field of view?

  2. Correct me if I am wrong here, but a 400mm lens is a 400mm lens no matter what body you put it on. Only the field of view changes. So you are simply croping the center of the lens with the 1.6X camera as the sensor is smaller than a full frame sensor which makes the image look bigger. Buying the 1.6X camera only changes the field of view, not the focal length.
  3. I just purchased a 70-300 f/4-5.6 IS USM lens and did some inital testing. I

    set the lens on a tripod with a remote release and shot a series of pictures at

    70mm, 100mm, 200mm and 300mm at f/8. The lens seems very sharp except for

    300mm at 100% crops. Has it been your experience that this lens is not as

    sharp at 300mm? I also tested in the portrait mode and found no difference

    from the landscape, so I must have a good copy.

     

    Your responses are appreciated.

  4. I am also partially disabled and I find that good L glass zooms work best for me. I am unable to zoom with my feet so I found the L primes did not work for me. The primes are generally sharper, but with my 5D and 1DSII the zooms work great.
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