Yesterday, I posted some dark-field histograms from the a7II at various ISO settings with the new uncompressed raw mode enabled. Today I’ll show you what the read noise from those images looks like, and how it compares to the CRAW lossily compressed dark field images. I looked at a 200×200 central square and examined the… [Read More]
Archives for 2015
Sony a7II uncompressed raw dark-field histograms
Sony posted the Release 2.0 firmware for the a7II yesterday. Among other things, the release makes uncompressed raw an option. I did a set of dark-field histograms with no lens attached, the shutter set to 1/2000 second, and the drive mode to single shot. at all ISO settings. I’m posting all the whole stop ones… [Read More]
Covering your tracks
I believe that, in many circumstances (journalism not being one of them), that all’s fair in photography. Composite away. Use convoluted curves. Is there a cigarette butt in the foreground? Clone that sucker out. But don’t let the viewer see what you did. It’s like the joke about the young man who was interested in… [Read More]
Small-tent photography
When it comes to photography, I’m a big-tent person. In fact, I’m a big-tent guy about most things, but I’ll just stick to photography here. If there’s any kind of photosensitive material involved in the creation of an image, as far as I’m concerned, it’s photography. That puts me at odds with the people who… [Read More]
Comparisons across generations of capture devices
In this post a couple of days ago, I talked about the shorter-than-I-had-first-thought useful lifetime of lenses, specifically excluding lenses with adorable flaws – deviations from conventional perfection that make the lens and the way it renders a scene an integral part of the image creation process, as opposed to just getting out of the… [Read More]
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