[Leica] M42x1-Canon EOS adapter with electronic focus confirmation

[telyt at earthlink.net (Douglas Herr)]

On Aug 30, 2006, at 12:43 AM, Scott McLoughlin wrote:

> OTOH, whence the need for the "green light" vs. ground glass
> focus confirmation?
>
> Are we back to the discussion of 2 days ago on compromises
> we'll now accept with SLR viewfinders?


>>>> http://tinyurl.com/qzpgm

Yup, same discussion.  The EOS focus confirmation seems to have 
problems with the same situations where the human eye has problems: 
slow lenses (f/8 or smaller), ultra-wide lenses (i.e., large DOF).  The 
advantages of the electronic system are that it works when an arctic 
gale is making your eyes water too much to see clearly, and that when 
your focus is off you can blame the camera instead of yourself.

BTW, with the 1.4x APO-Extender on the 560mm f/6.8, an effective 
aperture of f/9.5, beyond the EOS system's reliable range, focus with 
the SL is quick and certain.

Doug Herr
Birdman of Sacramento
http://www.wildlightphoto.com