riccadonna
Member
Let`s get a bit technical and forget street ph-art. As many have witnessed this A12 50 macro lens is still holding on it`s own despite some years of age. I used it so much that finally I`ve done it in. When I switch it in macro mode, the lens goes bananas, racking to and fro like drunk trying to find a keyhole, eventually turning camera off for good. In normal mode it can happen coming closer then some 20-30cm. It does have some barrel distortion at close distance compared with my summicron, something only noticable when reproducing f.x.paintings at close range. I think I`ll use till it stops as eventual repair would cost too much and the unused ones on ebay are quite pricely. When I want to go light my combo is GR and this one.
The picture is already a crop ca. 1/3 of original and the crop is close to actual pixels. Not bad at all. By the way, I`ve recently read that generally some 8-9 MP is enough for normal viewing distance which was fixed at 30cm with A4 print at 300dpi. That`s what a normal eye resolves. Bigger the print requires correspondetly greater viewing distance to maintain the same angle thus needing less dpi. Of course 16, 24, 36MP help a lot if you want to do cropping or to print huge landscapes for a nose end leaf and grass sstraw inspection ( require 700dpi from 50MP sensor). In old film days one had to be pretty good at final framing to maintain the quality and that`s what we can do with our modest 12MP.
p.s. I can see that technical talk is pretty popular on many forums, that`s I occasionally get carried away. Stanislaw
The picture is already a crop ca. 1/3 of original and the crop is close to actual pixels. Not bad at all. By the way, I`ve recently read that generally some 8-9 MP is enough for normal viewing distance which was fixed at 30cm with A4 print at 300dpi. That`s what a normal eye resolves. Bigger the print requires correspondetly greater viewing distance to maintain the same angle thus needing less dpi. Of course 16, 24, 36MP help a lot if you want to do cropping or to print huge landscapes for a nose end leaf and grass sstraw inspection ( require 700dpi from 50MP sensor). In old film days one had to be pretty good at final framing to maintain the quality and that`s what we can do with our modest 12MP.
p.s. I can see that technical talk is pretty popular on many forums, that`s I occasionally get carried away. Stanislaw
