I have exciting news. At least, it’s exciting to me. Your reaction may be, “Kasson, you really need to get out more.” Anyway, after many unsuccessful attempts, detailed in the previous posts, to tame the NEX-7 high-ISO noise by reducing the resolution of the image, I finally found something that works. Here’s the recipe. Go… [Read More]

In search of optimum tradeoff of noise and resolution in a 5 megapixel resize of NEX-5 and NEX-7 images, I tried a series of averaging operations before the resize. The one that worked best for the NEX-7 test image was a 2-pixel box blur in Photoshop followed by a resize in Perfect Resize using the… [Read More]

It’s a truism that sensors with larger photosites have less noise. But you can reduce noise by combining information from small photosites into fewer pixels than with a standard Bayer conversion. In my mind, this is ideally performed before demosaicing, but raw converters don’t, in my experience, allow to to choose the resolution rendered by… [Read More]

I didn’t remember having trouble with purple corners with the NEX-5, so I thought I’d run a test. I took photographs of a cloudy sky with both the NEX-5 and the NEX-7. I used my worst lens for generating purple corners, the Leica Elmar f/3.8 24mm. I set it to its worst aperture for purple… [Read More]