There’s a technique on the RawDigger site for determining the unity gain ISO for a camera by using photon noise. The scheme is basically a search over a range of ISO values to find the one where the square root of the average value of a group of similarly-exposed raw values equals the standard deviation… [Read More]

The Sony RX-1 has a small battery; it looks like the designers decided to double down on small size and light weight. There have been some complaints — although non from me — about the RX-1 battery life, which has usually been enough for me to make 400 or 500 images. I use a 1600… [Read More]

The electronic viewfinder on the Sony RX-1, like the one on the NEX-7, has a sensor on it that tries to detect when you’ve put the camera to your eye. Once it thinks that’s what you’ve done, it turns on the EVF and turns off the LCD screen on the back of the camera. If… [Read More]

I’ve been using the electronic finder for the Sony RX-1 for several weeks now. I would have reported on my experience earlier had it not been for all the preparations for the In Motion exhibition. Now that the exhibition is open, I have a bit more time. The finder is not small, but not huge,… [Read More]

Cole Thompson brought his Stevenson School photography class by the CAP Gallery this morning. Tracy Morrison and I talked to them about Hal Eastman’s and my work.