Lens Help

[EpicRavenLord]

Hey everyone. I picked up a "like new" second hand Voigtlander 40 f/1.4 I am having a problem. When I line up the rangefinder focus patch the shot comes out completely out of focus. Ive tried all the apertures and different distances. I have a fast enough shutter speed and I know its not user error. It seems like the lens in back focusing like crazy. In comparison my R-D1x and 28 f/2 focus spot on and super sharp… any feedback will help… I haven;t heard from the seller yet but I already asked for a refund.

I think the previous owner only used the lens on M43's so he may have never noticed the issue since the cameras focus differently.

 

[Monochrom]

point the camera infinte and focus that way check alignment, if wrong it can easily go out of focus.

Then extend a ruler and shoot at a given claer measure, check the pic and see if the focus corresponds with the actual picture focus.

Easy!

 

[Darthfeeble]

Seems obvious that the lens is at fault. Perhaps the lens was disassembled and cleaned to look "Like New" and reassembled incorrectly. I imagine you can find assembly instructions online somewhere, that or have it fixed professionally.

 

[le-alain]

Hello,
I had the same problem,
it was some screew out in the helicoil of the lense

Try: st the lens to infinity, without looking at the patch.
take a picture of someting at infinity, and it must be in focus !

If not, you should service the lense.
Mine was professionaly, for 80€ ...