Digital BW, The Print

> Diane,

> ... for a wider much faster lens you may very well like the 
> Sigma 20 f/1.8.

After 24 mm the full frame wide angle lenses seem to get very large, heavy,
and expensive, with usually less than great performance.  Retro-focus lenses
have never been a favorite of mine, and the wider they get, the poorer their
performance seems to get, all else being equal.  So, I think using a
full-frame, radical retro-focus design on a 1.6x sensor is a temporary patch
that doesn't make long term sense unless one just happens to have one lying
around.
 
>...but when I upgrade to another body, if it accepts EF-S lenses, 
>I may add the 10-22 also.

Yes, this is the way to go for this camera if I want to go wider.  I've seen
some comparison shots with this lens and the third-party versions, and the
Canon looks way better.

Paul
www.PaulRoark.com 





> 
>   ----- Original Message -----
>   From: Paul Roark
>   To: DigitalBlackandWhiteThePrint@yahoogroups.com
>   Sent: Wednesday, April 27, 2005 12:25 AM
>   Subject: [Digital BW] Sigma lenses & Canon Digital cameras [was
> www.OpenRAW.org needs your help or is it the other way around]
> 
> 
> 
> 
>   >
>   > According to a reply from the editor in a recent issue of Popular
>   > Photography, Sigma will "update" your lens to work with the new Canon.
>   > ...
> 
>   They can update some but not all of their lenses.  I called Sigma.  The
> 24
>   mm f2.8 I have is too old.
> 
>   I'm OK with the 18 - 55 that came with the camera at this point.  The 24
> mm
>   was not really as wide as I like anyway.  While the auto depth of field
>   feature on the Rebel XT appears to be close to random and useless, I've
> got
>   the DOF down now.  Some charts and tests allowed my to slap some scales
> on
>   the lens, making it quite feasible for the zone focusing I like.  And
> this
>   little puppy really has some DOF.
> 
>   Paul
>   www.PaulRoark.com
> 
> 
> [Non-text portions of this message have been removed]
> 
> 
> 
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