I ran the same series of tests that I’ve run on the D4, D800E, and M9 on the Sony RX-1. I expected to find more signs of self heating of the sensor, since the RX-1 runs with live view on all the time, but I did not. Here’s a series of closely-spaced exposures of 1/4… [Read More]
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ETTR — just crank up the ISO? Part 8
Here are the SNR graphs from yesterday, but for the D800E instead of the D4. There is even less reason to increase the ISO to improve the SNR of midtone and brighter values than there is on the D4. Note how low the statistical variation is compared to the D4. Why? I don’t know. Should… [Read More]
ETTR — just crank up the ISO? Part 6
I’ve been wrestling with some lack of repeatability in the measurements I’ve been reporting on in the last few posts. I haven’t completely solved the problem yet, but I thought I’d report on a series of measurements that I made yesterday. I worried that, because it looked like some of the SNR results might be… [Read More]
ETTR — just crank up the ISO? Part 5
I looked at the SNR vs ISO/DIN performance of a couple of Sony cameras. How I made these curves is described here. As before, the way to use these curves is to find the ISO/DIN setting beyond which the Actual (red) line drops as fast as the 1.5 decibel/octave line. Beyond that point, for a… [Read More]
ETTR — just crank up the ISO? Part 2
SNR graphs are fine, but what does the preceding post mean with respect to image quality if I don’t push up the ISO to keep the histogram to the right? I wondered the same thing, so I did some testing. I took my usual noise test scene: And I made a series of exposures with… [Read More]