Mark wrote:
Without doubt the 400/5.6 or second choice the 100-400
Have a look at a Sigma 500/f4.5 as well
You cant have too much focal length !
Like binoculars, you also can't have too much aperture. A 400mm f/2.8
or 600mm f/4 prime lenses would be wonderful, but they cost as much as
the small car needed to carry them! (If you do need to use such a lens,
they are available to hire.)
Those who have a camera adapter for their spotting scope (in my case,
800mm f/10.4) will attest that the magnification is wonderful, but give
me more light and faster shutter speeds!!
Be aware that the smaller sensor on (most) digital SLR cameras will
magnify/crops the image compared to a 35mm camera. This is usually
expressed as a magnification factor. For example, a 200mm lens on
an 35mm SLR will produce images equivalent to a 300mm lens on a
digital SLR camera that has a magnification factor of 1.5x
This web page has a good summary of the pros/cons of film vs. digital
SLR cameras:
http://www.sphoto.com/techinfo/dslrvsfilm.htm
--
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Paul Taylor Veni, vidi, tici -
I came, I saw, I ticked.
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