Kinebohのブログ一覧

I enjoyed modifying and adopting Minolta TELE-ROKKOR PE 200/4,5 old lens onto Canon EOS Digital mount yesterday. After establishing these procedures, I do not find out any reason to throw away this marvelous lens on earth. Though disadvantage like darker F number 4,5 and longer closest distance 2,5m as this one has, on the other hand, smaller barrel designing and shorter TELE lens element including a piece of aspheric one designing are somewhat advantages so I regard.

As written in "Leica Lens Manual", heavier and bulky lens has unavoidable tendency of property not to be used so often leaving at home, APO Summicron 180/2 and APO Teryt 280/2,8 would loose their opportunity to be brought out because of heavy weight, both of them weighs over 2,5kg like a military M16 rifle. So, this new comer would be taken out with me from now reminding me of the necessity of a tripod equipment for longer focal lens than 135mm avoiding camera shake.

EOS body cap is cut into two pieces to utilize bayonet nails and attached on to an original Minolta flange surface with acrylic resin material. The inevitable flange-back discrepancy of 0,5mm shorter is compensated by adjusting the helicoid ring making it at posterior position in combination with focusing ring to establish the infinity position.