On Mon, 2 Jun 2003 23:24:07 +0100, "Joseph Kewfi" <Joe_Kewfi@iol.ie> wrote:

>I should have said that the 20mm Nikkor would be used for exterior

>achitecture photography. It was earlier in the thread pointed out that it

>would not be wide enough for interior work, this is obvious but I should

>have stated to begin with it was for exterior only shooting.

Then I suspect you would be happier with the 28mm PC.

This lens allows you to keep verticals parallel with each

other and the frame edges while looking up or down (and

also sideways to "straighten out" building fronts when

shooting off center...). I prefer the f4 version of the

Nikkor, which is quite sharp to all corners with

horizontal-frame full (11mm) rise/fall by f11, and fairly

good to the far corners with vertical-frame full (11mm)

rise/fall by f16-22 (though this is beyond the

recommended shift limit for verticals of 8mm).