After Ricoh's official announcement of the M-mount expansion unit, I decided to buy one, although I had not intended to do so originally. Here are my first personal experiences with the lenses that I bought (or tried to buy). This page is devoted to the Voigtländer Super Wide Heliar f4.5/15mm lens.
In preparation of the M-mount expansion unit, I bought one lens and auctioned a second one in August 2011, a Voigtländer Super Wide Heliar f4.5/15mm, and a Leitz Elmar-C f4/90mm. Both were meant to extend the range of my two A12 units at the wide and tele ends.
First, I bought the Voigtländer Super Wide Heliar f4.5/15mm, which is manufactured by Cosina and equivalent to a 22.5mm wide angle lens on the GXR. Note that is has an in-built sun shade.
Photos: Voigtländer Super Wide Heliar f4.5/15mm (22.5mm equiv.)
On the M-mount expansion unit, it has an equivalent focal length of 22.5mm and thus, is a little bit wider than my favorite focal length of 24mm (which I have learned to prefer over 28mm).
Photo: Body with A12 M-mount expansion unit attached and Voigtländer Super Wide-Heliar f4.5/15mm lens
|Focal length||15mm (22.5mm equiv.)|
|Angle of view (35mm film)||110° diagonal|
|Number of iris blades||10|
|Number of lenses/groups||8/6|
Here are a first few samples taken with the Voigtländer Super Wide Heliar f4.5/15mm lens:
Disclaimer: I am not a lens expert who sees marked differences between various Leica and/or other lenses. I can check for soft corners, find differences in color rendition, and, in rare cases, may discover a "3D look", but that's all. Please regard therefore my conclusions as the verdict of a "layman".
It is still too early for me to draw any definite conclusions, and I have to admit that I use this lens rarely. Manual focusing is not a big issue with this lens because of the huge depth-of-field. Corner sharpness seems to be OK for such a wide lens.
All in all, the results that the Voigtländer Super Wide Heliar f4.5/15mm lens produces on the M-mount unit are very pleasing, but you need suitable motives for this lens...