PDA

View Full Version : The angle of coverage of Apo-Sironar-N



Songyun
14-Jul-2007, 21:32
Is it 72 degree or 75 degree?
According to the data sheets on linos website
http://www.linos.com/pages/mediabase/original/rodenstock_apo-sironar-n_e_2474.pdf
On the first page it claims 72 degree, while on the second page it claims 75 degree.

Ron Marshall
14-Jul-2007, 21:35
N-72, S-75, W-80

Armin Seeholzer
16-Jul-2007, 05:00
Yes it is really confusing, but it may be a printing error, because it was always 72 in the past!
But the coverage is a bit larger anyway but it will then be a bit on the soft side at the corners.
The 72 is the aceptable sharp part!
On the S version its 75 as already stated!
Hope it helps, Armin