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-   -   Voigtlander E lenses on Sony cameras (http://www.rangefinderforum.com/forums/showthread.php?t=164615)

wintoid 03-29-2018 01:08

Voigtlander E lenses on Sony cameras
 
I'm struggling to google this information about the native Sony (non-Leica) Voigtlander lenses, does anyone know? Am I correct in the following statements:
  • You focus at wide open aperture, the lens automatically stops down when the shutter is clicked
  • Shutter priority is not available
  • Focus shift could be a problem, depending on the lens formula
  • Aperture info goes into the EXIF

Thanks for any info/insight.

wintoid 04-02-2018 11:38

No one using Voigtlander E lenses?

squirrel$$$bandit 04-02-2018 11:45

They're fairly new, so not many people, I'd bet. I'm curious about these things, too. I don't think they have automatic aperture, though—I think you focus at taking aperture. The decent EVFs on the A7 cameras should compensate adequately, though.

dnk512 04-02-2018 11:49

Unless you are referring to an automatic lens I am not familiar with, all V lenses are manual focus and aperture setting. Please provide the exact lens you are asking about.

Shac 04-02-2018 12:39

Have look here - this team uses mainly manual focus lenses with Sony A7 series, including some CV E lenses

https://phillipreeve.net/blog/voigtl...-macro-review/

https://phillipreeve.net/blog/voigtl...#comment-72103

As mabelsound says they are all manual focus and manual aperture lenses and so Apeture Priority shooting is just fine (and yes you can focus at any shooting aperture) - the CV E lenses have electronic contacts for EXIF data

Michael Markey 04-02-2018 12:56

I just imagined that they were manual focus lenses Simon
I use my Leica lenses on my Sony cameras and focus at the taking aperture
Makes no difference to the EVF.
I use shutter priority for sports shots with the manually set aperture and it compensates with the ISO
Very flexible
It's a better solution than when I use a lens like the Canon 70-200 because the camera recognises the lens and ,if I'm on shutter priority ,it will open the lens rather than increase the ISO
Obviously it can't do that with a manual lens and as they have bags of ISO headroom an increase in the ISO is the preferred option


Focus shift is never a problem

kuuan 04-02-2018 18:41

disclaimer: I don't own any of the Voigtlaender E mount lenses and can't say for sure ;)

- concerning auto exposure I strongly believe that they work just like any other manual lens adapted to a Sony E mount camera.
Focus and aperture are set on the lens. Aperture mode working fine.

And I believe that Phillip Reeves statement that S mode and P mode won't work are partly incorrect, at least if the camera really behaves as with adapted manual lenses:
P mode will act as if in A mode and auto-exposes correctly.
S mode works, camera will auto expose if auto ISO is enabled: Aperture is chosen on the lens, shutter speed via wheel on camera, camera chooses correct ISO to auto expose.
( though of course, with much light during and a fast aperture, S mode, with a shutter speed that is not fast enough, camera can't go lower than lowest ISO and overexposure. )

edit: did some googling:
yes, EXIF goes to the camera, see: https://www.dpreview.com/news/496223...primes?slide=3
another difference to adapted manual lenses: if set so on the camera, the camera automatically engages magnification when focusing ( as with Sony E mount lenes when set to manual focus ): https://voigtlaender.com/e-mount.html
focus shift indeed seems to be a problem: https://admiringlight.com/blog/revie...sic-e-mount/3/
can't get conclusive information if the camera stops down the lens at release

bayernfan 04-03-2018 07:51

Quote:

Originally Posted by wintoid (Post 2799236)
I'm struggling to google this information about the native Sony (non-Leica) Voigtlander lenses, does anyone know? Am I correct in the following statements:
  • You focus at wide open aperture, the lens automatically stops down when the shutter is clicked
  • Shutter priority is not available
  • Focus shift could be a problem, depending on the lens formula
  • Aperture info goes into the EXIF

Thanks for any info/insight.

-no auto aperture.
-no shutter priority (closest thing is AUTO ISO in manual).
-focus shift could be a potential issue if you focus wide open, then stop down the aperture without re-checking the focus in EVF/LCD.
-aperture and focus distance are sent via the CPU in the lens to camera EXIF data.
-additionally, focusing the E-mount lenses auto-triggers the "manual focus zoom" feature if you so desire it.

wintoid 04-03-2018 08:57

Thank you very much everyone!

Michael Markey 04-03-2018 09:22

...... deleted


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