Rodenstock 135mm f/5.6 APO-Sironar-S Lens with Copal #0 Shutter
The APO-Sironar-S, a universal lens with 6 elements in 4 groups, is constructed with ED(extra-low dispersion) glass, which has been modified to provide the highest image reproduction quality. Like the APO-Sironar-N, its applications are practically limitless. The angle of view has been increased to 75° to permit more shift.
Today's modern
fully-multicoated lenses for
large format available from the
'big four' are all so good that for the most part they
are practically
interchangeable. There are
exceptions here and there,
however, such as newer
asymmetrical lens designs
providing more coverage with a
smaller size and weight. But in
the tried and true 6-element,
4-group standard lens formula,
the Sironar-S stands head &
shoulders above the rest thanks
to its ED glass. Beyond the
increased coverage, this lens
can be used with exceptional
sharpness even at apertures
which are far from ideal in the
world of large format. While
you might be bitterly
disappointed with a
skillfully-crafted effort at
f/11.0 with another "normal"
6-element/4-group lens, the
Sironar-S will still impress.
Key Features |
|
•
Extra-Low Dispersion
(ED) Glass |
|
| No visible color fringing even at edges | |
•
Six Elements |
|
| Ideal working aperture of f/16 - especially advantageous for outdoor shots due to shorter exposure times | |
| • | Less drastic light falloff towards limits of image circle |