Voigtlander 12mm f/5.6 Aspherical II on Monochrom

[SrMi]

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The Voigtlander 12mm vII has issues with digital color cameras. How is it for Monochrom?
I've been reading that Clyde Butcher, because of health reasons, moved to a smaller system: Leica M10-M and Voigtlander 12mm. He also uses an orange filter. I assume he uses vII as the vIII does not allow screw-in filters.

[rpittal]

I found the corners on both the CV 10 and 12 smeared too much (on monochrom also) but was fine if I cropped them square (returned both). In contrast, the CV 15 ver 3 has been great. I also found the Laowa 12 (Nikon mount adapted to M) to be much better than the CV 12 (L12 is much larger especially with the available filter adapter). I certainly won't argue with Clyde though! I am sure his pics with a plastic Diana/Holga would be great!

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[SrMi]

33 minutes ago, rpittal said:

I found the corners on both the CV 10 and 12 smeared too much (on monochrom also) but was fine if I cropped them square (returned both). In contrast, the CV 15 ver 3 has been great. I also found the Laowa 12 (Nikon mount adapted to M) to be much better than the CV 12 (L12 is much larger especially with the available filter adapter). I certainly won't argue with Clyde though! I am sure his pics with a plastic Diana/Holga would be great!

Thanks. I am not saying Clyde uses vII, I just speculated based on the filter usage. His large prints require sharpness, therefore I do not believe that he used vII but found a solution for filter with viii.

[LeicaS2]

I have used the 12 a bit with the M10 M and saw no smearing
you can see a few images poster on the forum in a larger file than this.

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[SrMi]

On 9/17/2020 at 8:35 PM, LeicaS2 said:

I have used the 12 a bit with the M10 M and saw no smearing
you can see a few images poster on the forum in a larger file than this.

<snip>

Thanks. Was this with vII or vIII of the lens?

[LeicaS2]

III

see photo

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[SrMi]

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2 hours ago, LeicaS2 said:

III

see photo

<snip>

Yes, smearing was reported with vII only.

[fiatlux]

I have got the vII and M246, smearing is not bad at f/11, although resolution is clearly lower than in the center. The attached is a full image with no correction in Lightroom other than minor exposure/contrast tweaking. Heavily compressed and resampled to load on the forum but the difference between center and corner is still clearly visible.

Note that I had to walk very close to that wall to fill the frame, I was perhaps 1,5m away from it. Corner smearing could theoretically be worse at infinity (lens closer to filter stack), but I have not noticed any difference in practice.

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Edited September 25, 2020 by fiatlux