Minolta MC ROOKOR PF 58/1,4 !

Minolta MC ROKKOR PF 58/1,4 standard lens has successfully modified to adopt onto Canon EOS digital image format. The physical performance of this old lens is almost the same as the fact mentioned in the article. The design concept is putting an emphasis on the resolution rather than contrast according to the perception while the period of time. The smaller first lens of PG model than PF one shows that newer transparent glass material had been introduced at the model changing time. I prefer this one to a newer MC ROKKOR PG 50/1,4 that has a different designing concept changed into more contrast expressions.
The curvature of frontal lens element is different each other, so the designing had been changed fundamentally, surface coating methods must be changed judging from the outside. The barrel designing was extended helicoid length for later model because of obtaining 10 cm more close up capability. Projected rear lens element case hits on the upper portion of mirror box of old 10D body, so any grinding trial fitting must be necessary if it is set firmly on 10D body. On the other hand, 7D body can accept this rear lens case projected construction that is designed to accept EF-S lenses that have often projected rear lens case.