> What I am not sure about is how should it be constructed optically. > What construction are the clip-on 2.5x magnifiers like from Pentax? > A kepplerian telescope? IIRC the viewfinder makes the groundglass > look like it is at 1m distance, but I am not that versed in optics > - is it afocal? I think not - it creates a virtual image at 1m > distance that can be focused upon just like a normal object at 1m > distance - right?
:-) responding to myself :-) I had a look at Leica's website, and they clearly state that the 1.25x magnifier is Galilean telescope system with 2/2 construction. Any more thoughts on the idea, or pointers to such existing magnifiers apretiated! Thanks! Frantisek
