Schneider 80mm Soft wide open

Discussions regarding Phase One 645 DF / DF+ and Mamiya 645 DF / DF+
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Schneider 80mm Soft wide open

Postby NNN634638786082376464 » Mon Oct 27, 2014 9:25 pm

I have noticed that my 80mm LS Mounted on a Phase One IQ 140 lens is soft wide open (2.8 through 4.5). I even did a test side-by-side with a 50mm Sigma on a Nikon D800. Also had problems with the lack of sharpness at lower time exposures while in continuous studio light sets (Arri) when using the leaf shutter. I had to manually override and force priority on the focal plane shutter. Does anyone have problems with this? Is this normal or is my lens defective?

Please see a screen shot of the test here: http://costin.ca/schneider-80mm-2-8-ls-vs-sigma-50-1-4-art/.
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Re: Schneider 80mm Soft wide open

Postby Digital Transitions, Doug » Wed Nov 05, 2014 8:12 pm

I took a look at your article...

I don't know if you have a focus calibration issue, a bum lens, something weird in the workflow or something else. But I can say that your results are horrid compared to my experience with the 80LS/2.8 lens. This lens is *very* sharp wide open.

Work with your dealer to troubleshoot.
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