[Leica] 35/1.4 pre-Asph M Hood

[red735i at earthlink.net (Frank Filippone)]

Well, maybe.  Shades are "calculated" for the angle of view of the lens.
All 35mm shades are precisely the same length and width and proportion of
length to width, or more properly, could be.  However, the differences that
must be taken into account are the front element/filter ring diameter and
distance from the point of connection of the shade to the optical center of
the lens.  The angle of view of all 35mm lenses on a 35mm film plane are
precisely the same.  But designers have different points of view, and
different strategies or safety factors that effect.

Try this to be sure.....

Mount lens and hood.
Open rear of camera... the trap door
Set shutter to B, set lens to max wide opening ( F3.5 or F1.4)
Open shutter
Look through the back of the camera at the CORNERS of the 35mm film gate.

Do you see light?  If yes, then it does not vignette.  If you see dark, it
does vignette.

Pretty easy test.......

Frank Filippone
red735i@earthlink.net 

The fastest 35 listed on the side of the 12585 is f/2.8 so I assume that 
there'd be vignetting at wider apetures.