From the mailbag: I was wondering if you would be willing to test the proposition that one should always extend the thickest legs first when setting up a tripod. I suspect this is not true for RRS tripods and DSLRs. I’m asking partly because confirming or dispelling old wives tales is fun, and partly because… [Read More]
Sony a7II controls
To say that the Sony camera controls have been in a state of flux since the beginning of the NEX series would be an immense understatement. The user interface (UI) has changed wildly from model to model, usually for the better. When Sony introduced the alpha 7 line, they came out with three models with… [Read More]
Mirrorless IR
When I got the alpha 7II, I sent my old a7 off to Lifepixel to be converted for infrared. I had a hard time deciding what flavor of IR response to go for. A while ago, I had a D3 mofified with the near IR filter, and that was OK, but I wanted a more… [Read More]
Photo credits
Many years ago I interviewed Jack Welpott for the Center for Photographic Art Newsletter, Focus. You can find it and many other interviews here. As was my habit, I made a portrait of Jack to accompany the interview: Last week, the CPA posted the portrait on their Facebook page. There was no photo credit. At… [Read More]
Simulating Sony a7II photon transfer curves
In yesterday’s post, we saw markedly worse low-signal-level performance when the camera shutter mode is changed from single shot to continuous. We know from looking at histograms that the analog to digital converter (ADC) resolution changes from 13 to 12 bits when the shutter mode is thus changed. Is that sufficient to cause the observed… [Read More]
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