As I don't have much experience with the rangefinders this confused me even more.
I didn't now that the focusing patch would have different focus/sharpness based on where you focus the lens. In other words, I don't understand why one needs to constantly adjust the viewfinder. I mean the viewfinder without any magnifier doesn't need any adjustment, right?
What did you do to your magnifier? It seems quite different than the one shown on the jp exposures site.
No magnifier will give you a perfectly sharp image at infinity and 0.7m.... they are optimised usually for distance use, so when used close up it's difficult to achieve perfect focus. Also, with magnification, correction of any errors in your vison becomes more critical. With a variable diopte magnifier to can get PERFECT adjustment for distance ....... but you will find below 5m or so things will get slightly blurry - unless you are young ..... and a slight adjustment is needed to correct for this...... about a 1/4 of a turn in the Japan Exposures 1.35x case.
The only thing you can see different is a rubber O ring between the main body of the mag and the adjustment knurled ring....
The M series rangefinder is made so that virtually everything from infinity to 0.7m is in focus ...... but adding a magnifier changes the optical properties of the system ....
Edited by thighslapper, 30 April 2013 - 23:30.