[Leica] R10 in development

[wildlightphoto at earthlink.net (wildlightphoto@earthlink.net)]

red735i@earthlink.net wrote:

> Let's not get too excited, yet.  Lens vignetting can be caused by at least 
> 2 sources...
> one is that the image circle of the optical lens design will not cover the 
> required
> sensor to the required "accuracy".  the second is that the internal 
> anti-reflection
> dampers limit the image circle.  In a well designed lens, the 
> anti-reflection dampers
> purposefully limit the image circle so that you do not get internal 
> reflections,
> limiting contrast.

I think you really mean 'limiting flare'.

>  ( the last Hasselblad lenses had an update that did precisely this.  The 
> CFi lenses
> are CF lenses with improved internal dampening.)
>
> Until we are TOLD which lenses would work, you can do your own
> estimation, calculation, or guess.  But no parties, until the final words 
> come from Solms.

This is all idle speculation on my part, but it's interesting to note that 
many of the recent R lenses are designed to replace the mount quickly and 
easily... they're the lenses with ten screws appearing to hold the bayonet 
flange in place.  Take four of the screws out and the flange and aperture 
ring come off as a unit.  How much it would take to incorporate electronic 
aperture control circuitry in a replacement unit is anyone's guess.  The 
only moving interface between the aperture ring/flange unit and the rest of 
the lens is the lever to stop down the diaphragm.  A quick mount unit change 
and the aperture of manual-focus R lenses can be controlled electronically.

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