----- Original Message -----
From: "Tim Walls" <tim.walls at snowgoons.com>
To: <cctech at classiccmp.org>
Sent: Tuesday, May 29, 2007 5:46 AM
Subject: Re: digital camera capabilities
   In the
interests of completeness, I should say that this isn't strictly 
 speaking true.
Canon make EOS mount tilt/shift lenses, which will work on
 any of their digital SLRs (three of them, 24, 45 and 90mm IIRC.)  In fact,
 their APS-C sensor DSLRs are in many ways ideal - the smaller-than-35mm
 sensor size means you're unlikely to see any vignetting even at extreme
 ends of the available movements. 
 
Nikon makes some too.
Still, though, if you're using perspective control and lens tilts and shifts
to attain certain results, you shouldn't be using a plastic digital SLR.
You should be using a proper view camera.
A good 4x5 camera with a good lens costs about as much as a professional
DSLR.  A good used 4x5 costs significantly less.  I got my whole 4x5 system
for about $500 including darkroom gear.
Now if you want to shoot digital 4x5 you have to be rich, but you can get an
amazing capture with a decent flatbed scanner off 4x5.  There is a scanner
that will give you a roughly 60-gigabyte uncompressed image (it was
certainly tens of gigabytes).
Sometimes you want things *out* of focus (selective focus)... and this is
hard to do on APS-sized DSLRs.  It's much easier to do on 35mm (or
full-frame DSLRs) and obscenely easy on larger formats.
Use the right tool for the job.  DSLRs are fantastic for weddings.  4x5
monorails are irreplaceable for architecture.
Jim