Yesterday I wrote a post aimed at discovering the relationship between dither and quantizing precision when resolving detail was the main criterion. The conclusion was that, just as for the avoidance of posterization (see here, here, and here), half a least-significant bit (LSB) was enough noise for most purposes. For critical judgements, it looked like… [Read More]
Archives for April 2016
Dither, precision, and image detail
I’ve done several studies on how much noise dither is enough to eliminate posterization. How read and quantizing noise interact Read noise and quantizing, again More on read noise and quantizing The answer, for Gaussian noise dithering, is about 0.5 the least significant bit voltage, rms. When you’re doing the judging visually, in the tests… [Read More]
Sony a7RII or Nikon D810?
From the mailbag: I have difficulty choosing between the D810 and A7RII. The A7RII has many features that I like but there are things that are not crystal clear to me. Since you have selected the D810 and A7RII as your favourite gear, I assume you know them inside out. I would really appreciate if… [Read More]
More hill pictures
Here are a few more recent pictures from my studio. These are all infrared.
Fog across the way, again
I think I’m going to set aside the autofocus speed testing protocol development. It has the potential to take up a lot of my time and appears to be something that few of you care about. While I’m figuring out where to go next with the technical stuff, here are a few images that I’ve… [Read More]
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