The finder you mention is the LEICA UNIVERSAL WIDE-ANGLE VIEWFINDER M
. It is designed for use with the recently released Leica Tri-Elmar-M 16-18-21mm f/4 ASPH.
The Leica Universal Wide-Angle Viewfinder M has brightline frames for the following 35mm focal lengths: 16mm, 18mm, 21mm, 24mm, and 28mm. This takes into account the Tri-Elmar-M lens being used on both a full-frame 35mm camera (M7 or MP), as well as the new M8, which has a smaller sensor, requiring a factor of 1.33X. This explains the intermediate focal lengths found on the finder.
Here are the approximate, 35mm angle of view specs from the finder settings: (diagonal, horizontal, vertical)
at 16mm: 107°, 97°, 74°
at 18mm: 100°, 90°, 67°
at 21mm: 90°, 80°, 59°
at 24mm: 84°, 74°, 53°
at 28mm: 75°, 65°, 46°
I have found the brightline frames in the Universal Wide-Angle Viewfinder M to correspond nicely to several focal lengths available from ALPA, Schneider, and Rodenstock. In addition, it has a convenient parallax compensation dial that enables adjustment of the frame to the focusing distance in five steps. It also incorporates an illuminated spirit level, along with optionally available, screw-in diopter correction lenses.
I believe it sells for approx. $850-$900
I have yet to see a single picture of the new ALPA 0° - 6° continouously adjustable tilt adapter anywhere on ALPA's site. Unless some one has some sneak-peek photos from Focus on Imaging, we are probably going to have to wait just a bit.
Does anybody know anything more about the Leica Multi-Viewfinder they show on some of their product photos? I've Googled it and come up blank. I presume it's a zoom finder, so I'm wondering what focal range it covers. Also, this viewfinder has two windows on the lens-facing side. Is one of them for a built-in meter? And finally, I'm wondering whether it's being sold new, or whether it's only available on the used market. Anybody have any details?
As for Alpa's new tilt mechanism, I've been searching for photos of it as well. It doesn't seem to show up in any of the images PdF pointed to.