Jim and James.
I have to say that a fast lens is still a must. I have
the 70-200 f/4 which does very well most of the time,
but when the light is too low, the 50 f/1.8 comes in
handy. The reduced DOF is a problem in the sense it is
harder to get a sharp picture, but when they are, they
are more amazing than the zoom at f/4 at 70. Now at
200mm it is pretty similar ... I had the 85mm f/1.8
which was stolen, and I plan to get it again
sometimes. This was an amazing lens, especially with
film. However, f/1.8 is plenty fast for me. Even 2.8
would be enough, which is the aperture I used the most
with the 85mm. At 1.8 there was just not enough DOF,
especially with the 300D.
Now for my next lens, I probably would like to get a
24/28-70 f/2.8 as 2.8 would be fast enough, and maybe
negate the need for the 85mm ... but then the 85mm was
so light in comparison to my 70-200 ...
How does the 28-70 L performs on DSLRs?
Jerome
------------------
James B.Davis wrote:
Maybe with film, these fast lenses were necessary but
with the advent of ISO800 almost noise free, they just
aren't selling nor needed.
-----------------------------------------------------------------
Jim,
While I might agree that these fast lenses may not
sell well due to price, a fast lens does produce
selective focus you simply cannot get with ISO800.
Bear in mind the smaller image sensor on your digital
SLRs (unless you are using the EOS 1Ds), increase DOF,
so you really need a fast lens if you want shallow
DOF. You probably have little need for shallow DOF
but that does not mean ISO800 negates it. Peter K
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