Canon 7s RF base length.

[leica M2 fan]

How does the base length of the 7s compare to the M2, Fed2, Zorki 6 and the Nikon S2? I'm especially interested in which one of these cams would allow the easiest focusing with 85 or 90 lenses. TIA.

 

[jlw]

There's more to focusing ease than base length alone -- magnification plays a big role, and clarity and brightness also are factors.

Also, a rangefinder patch with sharply-defined edges (e.g. Leica Ms and current Bessas, but not the Canon, Nikon, Fed or Zorki) allows more accurate focusing if the subject contains vertical lines, because you can use the edge of the patch as a "split-image rangefinder" and the eye does a better job of judging split than it does of judging coincidence.

Still, if you want to make some basic base length and magnification comparisons, there's a handy chart on CameraQuest at:

http://www.cameraquest.com/leica.htm

 

[leica M2 fan]

Thanks for your input.

Thanks for your input.

There's more to focusing ease than base length alone -- magnification plays a big role, and clarity and brightness also are factors.

Also, a rangefinder patch with sharply-defined edges (e.g. Leica Ms and current Bessas, but not the Canon, Nikon, Fed or Zorki) allows more accurate focusing if the subject contains vertical lines, because you can use the edge of the patch as a "split-image rangefinder" and the eye does a better job of judging split than it does of judging coincidence.

Still, if you want to make some basic base length and magnification comparisons, there's a handy chart on CameraQuest at:

http://www.cameraquest.com/leica.htm

Excellent advice and information, after this it's no wonder no one else responded. This is the best advice I could have gotten. 🙂