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minolta w rokkor qh 21/4 and mirrorless compatibility?
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PostPosted: Mon Jan 28, 2013 3:24 pm    Post subject: minolta w rokkor qh 21/4 and mirrorless compatibility? Reply with quote
hi guys

does anyone know if this lens can work on mirrorless cameras without damaging the sensor with its protruding backside?
thanks!
tony


PostPosted: Mon Jan 28, 2013 6:31 pm    Post subject: Reply with quote
The sensor should be fine, it's the shutter that could be damaged if it sits too close.
I took some measurements using a digital caliper from this picture I found http://minolta-database.com/html/lens/R/R_21_4/R_21_4_1_length.jpg
at http://minolta-database.com/html/lens/R/R_21_4/R_21_4_en.htm
and some measurments from an MC lens I have, and did some number crunching.
I came up with 35.3mm from the mount to the rear most part, and used the caliper again to check the distance from the mount of my MD/MC adapter to the metal trim just in front of the shutter, and it's near identical, caution is advised if you wish to attempt it.
I would work my way slowly from MFD towards infinity and test fire the shutter, maybe use a demo NEX in a store. Wink

I was thinking the same thing with Canon's FL 19
http://www.canon.com/camera-museum/camera/lens/fl/data/19-85/fl_19_35.html
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