Digital BW, The Print

Clayton-

DOF has nothing to do with sensor size.  A 200mm lens on a full frame has a
given DOF.  If you put it on a sensor with a 1.5 factor it now has a 300mm
EFFECTIVE focal length.  It still is a 200mm lens and maintains THAT DOF.
Just ONE of the advantages of using a smaller sensor --if everything else is
equal.  Since it also has the SAME f/stop you gain that.  No need to use an
extender or a longer, heavier lens.

Seth 

==-----Original Message-----
==
==I'm asking because I look forward to moving to a larger 
==sensor camera someday, but have gotten terribly spoiled by 
==the Pro-1's DOF (2/3 sensor). I'm wondering what I'd be 
==giving up. When I was in DVNP in January I used mostly f/5.6 
==and speeds were in the 1/400 to 1/600 range at ISO 50. There 
==were no DOF limitations, everything was tack sharp and no 
==blurry flora even though there was a good breeze. It was an 
==absolute delight to work that way.