Copal sizes

[Bernice Loui]

300mm f5.6 Plasmats are going to be in a Copal# 3 regardless if they are APO Sironar, Nikkor W, Symmar_, Fujinon _.
All will be HUGE. More similar than different regardless APO, Schneider, Fujinon, Rodenstock, Nikkor.

300mm f9 APO ronar and similar can be had in a Copal# 1 shutter.
Significantly smaller.

Left is a 300mm f5.6 Symmar S Copal# 3, Right is a 300mm f9 APO ronar Copal# 1.


Focal lengths are essentially identical, which to use, depends on image needs.



Bernice

Rodenstock APO-Sironar N 5.6 vs Nikkor W 5.6

[gary mulder]

Rodenstock APO-Sironar N 5.6 vs Nikkor W 5.6

There is no hard evidents which will be the technical superior lens. It’s more about taste. German lenses seem to have a tendency to have a gradual transition from plane of sharpness to unsharp. As Japanese exhibit a more pronounced sharp/unsharp transition. So it depends on what you fits your work.