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Voigtlaender Ultra Wide-Heliar 12mm/F5.6 M39/LTM
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PostPosted: Sat Jan 16, 2016 2:02 am    Post subject: Reply with quote

tb_a wrote:
Lightshow wrote:
The only nitpick will be that the hoods are permanent, and the 10 & 12mm will have no filter threads.
SK Grimes does offer a service to remove the hood and anodize the part, they may be able to offer filter threads.


I doubt that you can use filters on the 10 and 12 mm versions without vignetting, especially when used on A7 (FF) series. Even the lens hood (sun shade) is only a bad joke on my 12 mm version in order to prevent vignetting. It's more or less useless on lenses with such a wide angle of view, similar to many fish-eye lenses in existence. That is a general problem with all super wide lenses and not specific to Voigtländer.
However, there would be a special filter holder available from Voigtländer: Click here to see on Ebay. I think it takes 77 mm filters.

That filter holder is for the first version that was LTM, the 2nd version had M mount and a bigger hood.
https://cameraquest.com/voigt_12VM.htm
I think many would prefer a removable hood.
Would an 82mm filter vignette?
Or a large professional filter system from Lee or Cokin?
I also like the lens cap that comes with my CV15III


PostPosted: Sat Jan 16, 2016 4:21 am    Post subject: Reply with quote

I have the first version of this lens.. It's the same optical formula as the second version except it's LTM/L39 mount and has a removable hood.. which makes it much more desirable..




you can buy this 77mm filter holder



...and mount a Lee Filter system on it



PostPosted: Sat Jan 16, 2016 9:07 am    Post subject: Reply with quote

tb_a wrote:
kds315* wrote:
what's the MFD of the 12mm lens?
And if set to infinity, what's say at f8 the closest distance in focus (according to the lens scale)?


MFD = 0.3 m

If set to infinity, at F8 the DOF is apprx. 0.6 m to infinity (F11 apprx. from 0.45 m and at F22 apprx. from 0.25 m to infinity).


Danke!