CV 15 Vignetting Problem - Help!

[Gary P]

I have been assembling what I thought were the right components to use my Voigtlander 15mm lens on my M8. I bought the Milich lens hood adapter and a B&W 39mm UVIR filter. Attached are two images one with the adapter and filter and one without.

As you can see the adapter with the filter causes serious vignetting. I thought the adapter was made for this purpose but perhaps I was wrong.

Any suggestions anyone?

Thank you for your input.

Gary P

 

[jlm]

the worst vignetting i have ever seen with the 15mm filter/hood adapter is no worse than your first image. the second image tells me you have assembled the unit incorrectly or not fully pushed it onto the lens

 

[Gary P]

Hi John,

The first image is with the adapter only, no filter, the second is with the adapter and the filter screwed into position. I really pressed the adapter on to make sure it was seated as far as possible on the scalloped built in hood of the lens. Sometimes when you tighten the set screw it creeps off the tightest position. I made sure it was full on and only tightened the set screw enough for the filter to freeze it into position.

It looks to me that the depth of the filter housing is too much when mounted on the adapter. The vignetting is fully from the filter being placed too far out from the front lens element.

I friction fit the filter into the lens's built in hood with no vignetting problem in the image.