Voigtlander 40mm f/2 Septon Aspherical Review - Sony Forum - Photography

Current versionSaved May 22, 2026 at 08:10 AMTitle changed

Voigtlander 40mm f/2 Septon Aspherical Review

^I found my zeiss ze lenses do not play well with the sigma mc-11 because it only stops aperture down at exposure time and certain zeiss classic lenses like the 50mm f1.4 planar suffer from focus shift when changing aperture. This resulted in a lot of out of focus and incorrectly exposed photos. The metabones (iv, v) have an advanced mode which allows you to directly change aperture.

Original postPosted May 22, 2026 at 03:57 AM

Re: Voigtlander 40mm f/2 Septon Aspherical Review

^I found my zeiss ze lenses do not play well with the sigma mc-11 because it only stops aperture down at exposure time and certain zeiss classic lenses like the 50mm f1.5 planar suffer from focus shift when changing aperture. This resulted in a lot of out of focus and incorrectly exposed photos. The metabones (iv, v) have an advanced mode which allows you to directly change aperture.