CV is Cosina Voighlander
Originally Posted by nicholai
they are multi coated with lerge hoods tolerant of back light situations, high refractive index glasz good off axis performance.
J12 are single coated and can do iris images with sun in or just outside frame
The Canon LTM f/235mm is excellent lens but in ex condition is x1.5 times the $ of a CV, the oil on blades is not critical in a rfdr camera, they tend to gall and stick otherwise. It is single coated and can flare without a hood. It is a small lens for a f/2, but larger then the CV 35mm.
Some people prefer the SC lenses for the adaptive compression they provide pastel plastic colours, fill in shadows in mono. Subjective thing.