On 30 Dec 2003 at 10:39, Dag T wrote:
OK, but if a 22.5mm FF lens has an angle of view of 88mm (a didn�t remember those numbers), the FOV factor of 1.5 of the *istD should indicate that a new DA lens with this angle of view would be a 15mm.
OK now I'm confused.
If the diagonal angle of view across an APS frame (almost the same as the *ist
D sensor) is 88� then this lenses actual FL would be approximately 18mm.
If this same 18mm lens covered a 35mm frame it would provide a 100.5� diagonal
angle of view in that format.
One of us is confused, i�m not sure who :-)
Doesn�t the field of view of your 15mm correspond to the field of view on a 22mm when used on the *istD?
A DA 15mm f/3.5 would be very interesting....
Not for those of us who already own an SMCPA15/3.5, an 18/2.8 would be nice
though.
They have another patent application for that one...
DagT
