Using a 24mm lens on a 0.72 m6 w/ 0.85x reducer?

[Hephaestus]

I’m wondering if one could approximate a 24mm frame on a 0.72x Leica by fitting a screw-in 0.85x reducer eyepiece and using the whole area of the viewfinder? Does anyone know what the angle of coverage is for the entire 0.72x viewfiner? Thoughts?

Thanks,
-Ryan

 

[erikhaugsby]

No.
The minifier only reduces apparent size of the exit pupil, and because it isn't in front of the finder it is incapable of actually increasing the field of view of the finder. This is why 35mm lenses (and 135 lenses, sometimes) made for the M3 had an optical assembly to be situated in front of the finder.

 

[Hephaestus]

No.
The minifier only reduces apparent size of the exit pupil, and because it isn't in front of the finder it is incapable of actually increasing the field of view of the finder. This is why 35mm lenses (and 135 lenses, sometimes) made for the M3 had an optical assembly to be situated in front of the finder.

Hi Erik,

I wasn't clear. It seems to me that there is space between the edge of the viewfinder and the 28mm lines (the viewfinder displays more than the 28mm field of view). However, I cannot see all the edges of the finder at once with my naked eye- so what I have in mind is to add a 0.85x reducer to the eyepiece so that, hopefully, I will be able to see the boarders of the viewer without straining and shifting focus, and then to use that to approximate a 24mm field of view.

To summarize, I don't expect the 0.85x reducer to change the coverage of the lines, but rather allow me to see the entire viewfinder area. If that works, will the total finder area approximate 24mm of coverage?


-Ryan