Super-Elmar shots

[UliWer]

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The difference in format means a difference in field of view. On film or a full-frame sensor, the screw-on filter (UV/IR) will vignette - showing up in the corner of the pictures as dark cutoff areas.

 

Of course you are right! I actually made the experience using a hood on a lens without problems on the M8 which caused vignetting when I used it on the film M.

 

 

If one is happy with 77mm filters, then one can use the same system for filtering either an M8 or a film M. Good luck seeing through the rangefinder, however.

 

Seems the 77mm-filters which Leica announces (without hood?) will be the solution for a future full-frame digital M.

 

Are there any usable filter/hood-systems for other super wide-angle lenses of about 18mm on the market? How is it solved for the Zeiss 18mm?

[lars_bergquist]

The Zeiss 1:4/18mm Distagon T* uses 58mm screw-in filters and a bayonet hood---for the full format, and hence for the M8 format too! Works perfectly. Cannot understand why Leica have to use such clumsy and non-standard filter and hood solutions. Elegant filter and hood solutions are a selling point for the Zeiss lenses, and I think it outweighs the coding hassle---and Carl Zeiss AG do what they can to ease the problem, short of running afoul of Leica's man-eating patent lawyers. (German lawyers are if possible even more Shylockian than the American breed ... )

 

The old man from the Age of the Contax Biogon

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[marknorton]

You don't need the instruction book - diagonal angle of view of a lens is 2 arctan (d/2f) where d is the frame diagonal, 43.27 for FF, 32.45 for the M8 which tallies exactly with Brian's figures, 100 degrees FF, 84 degrees on the M8. All approximate of course because the focal length and angle of view vary slightly with focussing distance.

 

It's now clear the the filter for the M8 will be just like the solution we developed for the WATE, a cylindrical spacer inserted between the lens and the hood which will move the lens hood forwards by, say, 7 - 9mm. It's also clear this filter will vignette on full frame and the 77mm filter adapter is going to be a bit of a monster...