There are no "digital" prime lenses between 20 and 35mm. Pentax
lenses designed for digital SLRs, to date, include:
DA14
DA16-45
DA18-55
DA40
DA50-200
D-FA50 Macro
D-FA100 Macro
If I get a chance to set up my copystand and lighting, I'll make a
gray card exposure with the A24/2.8 or FA35/2, but I doubt very much
that you'll see anything different compared to making the same
exposure on a 35mm film negative and then cropping the negative to
the 16x24 sensor format dimensions.
Godfrey
On Sep 5, 2005, at 12:56 PM, Bob Blakely wrote:
Yes. Also, if one of you digital dudes would shoot a gray card
frame edge to frame edge with one of your digital primes (say
between 20 and 35 mm or so) and one of your film primes of *equal*
focal length, I would be interested in comparing light fall off at
the corners. Tripod mount camera on centerline wit perpendicular
from the center of the gray card. Light gray card evenly with two
side lights placed on each side of the camera and such that there
is no equal angle reflection from the light to the card to the
lens. No flash. Just like you were photocopying art.
