135mm for screw mount + finder

[richardu@codan.com.au (Richard Urmonas)]

I am looking at getting a 135 mm lens for my IIIc.
The questions I have are:

	- Any opinions on the sharpness etc of the various 135mm lenses.

	- Viewfinder options.  The multi-focal length viewfinder
	  uses a moving shutter arrangement to adjust for the lenses.
	  What about the dedicated single focal length viewfinders?
	  Are these of different magnifications, or are they simply
	  a set magnification with an appropriate mask?  I think
	  the viewfinder image may be too small for accurate framing
	  unless the 135mm viewfinder has a greater magnification.

Thanks in advance.
Richard Urmonas.