Search Results for: star eater

When I tested the NEX-7 with M-Mount lenses, I noticed a lot of color shifts in the corners with some lenses. All else being equal, the errors seemed to get worse the closer the exit pupil of the lens was to the sensor, and the wider the aperture. M-mount lenses, being made for a body… [Read More]

Let’s review this sharpness testing project to date. My objective was a unified field test for sharpness, one that would conflate the effects of camera motion and vibration, lens focus errors, depth-of-field, field flatness, diffraction, and lens defects, and allow degradations from all these effects to be compared with a common yardstick. I succeeded in… [Read More]

The EVF The biggest difference between the M240 and its Leica predecessors is live view and the electronic viewfinder, so I’ll start there. First off, let me say that I consider them inseparable in most circumstances – you can’t use an EVF without live view, and there aren’t many times when you’d prefer to look… [Read More]

I’m still trying to get a handle on the green shadows on pushed M240 images. I constructed a new experiment. I photographed this target: with the brightest patch about 3 stops down from full scale at ISO 3200. That gave me an exposure of f/11 at 1/60. I used a 135mm APO Telyt f/3.4 to… [Read More]