The Novoflex Nikon F to Sony E adapter that I used with the Zeiss 21mm f/2.8 is short by about the same amount as the Novoflex Leica M to Sony E adapter that I used with the 24mm f/3.8 Elmar. I got to wondering why the focusing error caused by improper adapter spacing showed up… [Read More]
Archives for 2013
A little EVF trick
While testing various wide angle lenses on the a7R, I discovered a trick that is useful with any camera with an EVF and focus peaking. It can give you a quick idea of the loss of sharpness at the periphery of an image without making even one exposure. Out of focus, focus field curvature, corner… [Read More]
Zeiss 21mm ZF.2 on a7R
Like Bo Diddley said, “You can’t judge a book…” The little Leica 24mm Elmar looks like it would be a perfect match for the half-pint Sony a7R, but it has dark corners, corner color shifts, and corner smearing. The hulking Zeiss 21mm f/2.8 Distagon ZF.2 looks comical on the Sony body. The lens is so… [Read More]
Leica 24mm f/3.8 on a7R
I few posts ago, the results for the Leica 24mm f/3.8 Elmar were degraded because the Novaflex adapter I was using was a little too thin, so that when I focused the lens on infinity with the scale engraved on the lens, I was actually focusing beyond infinity. Beyond infinity, let that roll around in… [Read More]
Leica 24mm f/3.8 sun stars
I went for a walk this morning, and I decided to play with sun stars — that’s the effect you get when you get the sun, or part of the sun, in the image at a small aperture. The sun’s rays striking the diaphragm leaves cause radial spikes of light. If you’re going for part… [Read More]
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