Digital BW, The Print

Excellent discussion
Thanks so much
Debbi




>  >... can't tilts and shifts be done in Photoshop post production?
>
>I agree, in general, with George. 
>
>More specifically, I think mild perspective controls work well in 
>PS, but I suspect a perfectionist would see and could measure some 
>distortion.  Also, the sharpness -- effective mp count -- goes down 
>when you use the PS perspective controls.  The information is 
>stretched, squashed, and interpolated.
>
>With respect to tilt and focus plane control, at 24mm the depth of 
>field allows reasonable zone focusing, but with longer focal length 
>lenses the number of zones and amount of work that is needed becomes 
>a real hassle.  At 90mm, it's nearly impossible to match what a tilt 
>can do.  (I've never had very good luck with the automated 
>frame-combining routines.)
>
>Note also the problems with movement in the image if you make 
>multiple, zone-focused exposures.
>
>Tilt is a really nice tool to have for landscapes.  The advantages, 
>of course, need to be weighed against the costs and disadvantages of 
>the tilt-shift lenses.  The only TS lens I've used that did not have 
>a significant sharpness reduction over a non-TS lens of about the 
>same focal length is the 90mm.
>
>
>Paul
>www.PaulRoark.com
>