Ricoh GXR: M-Mount Unit with Voigtländer 15 mm

Preparations for the Unit | Body with Lens Attached | Some Technical Data | Sample Images | Conclusions | Links

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 f4.5/15 mm lens.

New: You can view and download the original files of the samples (for downloading use the browser's context menu).

 

Preparations for the M-Mount Unit

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 f4.5/15 mm, and a Leitz Elmar-C f4/90 mm. 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 f4.5/15 mm, which is manufactured by Cosina and equivalent to a 22.5 mm wide angle lens on the GXR. Note that is has an in-built sun shade.

    
     
 

Photos: Voigtländer Super Wide Heliar f4.5/15 mm (22.5 mm equiv.)

On the M-mount expansion unit, it has an equivalent focal length of 22.5 mm and thus, is a little bit wider than my favorite focal length of 24 mm (which I have learned to prefer over 28 mm).

 

Body with Lens Attached

    

Photos: Body with A12 M-mount expansion unit attached and Voigtländer Super Wide-Heliar f4.5/15 mm lens

 

Some Technical Data

Focal length 15 mm (22.5 mm equiv.)
Angle of view (35mm film) 110° diagonal
Maximum aperture 4.5
f-stop range 4.5-22
Number of iris blades 10
Number of lenses/groups 8/6
Shortest distance 0.5 m
Weight 156 g
Length 38.2 mm
Maximum diameter 59.4 mm
Filter thread 52 mm
Lens hood integrated

 

Sample Images

Here are a first few samples taken with the Voigtländer Super Wide Heliar f4.5/15 mm lens (click the images to view the unprocessed original files in a new window):

 

Conclusions

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".

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 f4.5/15 mm lens produces on the M-mount unit are very pleasing, but you have to find suitable motives for it...

 

Links

For more links related to the Ricoh GXR M-mount expansion unit, see page M-Mount Links.

 

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25.11.2014