cheap, quite small, fine colour rendition. Ok contrast.

image circle not bad, but not class beating either. Not necessarily the sharpest lens out there, although that may not be as visible in the final picture/important in these film formats. Middle sharper than edge areas down to f16 or so.

For starters, this lens is in the wrong section of photographyreviews. Far from a 35mm prime, it is a large format view camera lens for 4x5"/5x7" sheet film or smaller.
Geronars are Rodenstocks budget lenses. The formula is three elements in three groups and image circle of the 210mm version is rated at 242mm. Given that it's a budget lens it is quite good and will suit all but the most fastidious users.
The Geronar also sells as the Calumet Caltar, just rebranded, and often even cheaper.

Customer Service

not needed.

Similar Products Used:

210mm Schneider Xenar, Komura-Commercial, Nikkor-W, Apo-Symmar.
203mm Ektar, 8 1/2" Raptar. 200mm Nikkor M.