Quote Originally Posted by Clemtography View Post
I have another question whats the specialty of modern (super) wide angles and the old classic wides or legendary wides.
(actually had apo lanthar and Sironar-S, modern Plasmats, in mind.)

Mainly asking about new type vs old type.
The Apo-Lanthar is most closely related to the Heliar, it is not a Plasmat or anywhere near one. Also, neither the Lanthar/Heliar nor the Plasmats are wide-angle lenses.

The old wide angle lenses such as the Angulon (a "reverse" Dagor type) usually just covered their format, and needed to be stopped down for good sharpness over the entire frame. Newer lenses such as the Super Angulon allow for movements, and will work at a wider aperture.