In the last post, I looked at the out of focus (OOF) point spread functions (PSFs) of the Hasselblad XCD 90V 90mm f/2.5 lens on a Hasselblad X2D 100C. I did the test with a new production lens I’d just received. As expected, at high shutter speeds the OOF PSFs departed quite significantly from the… [Read More]
High shutter speed out of focus point spread functions with the XCD 90V
A reader asked me to test the high shutter speed bokeh of the Hasselblad XCD 90V on the X2D. I made the tests with my recently acquired production version of the lens. For a source, I used an LED flashlight with a 15 or 20 mm aperture at a distance of about 10 meters. That’s… [Read More]
The dubious search for GOATs
It’s always been the case that humans crave simplicity, even when it masks reality. Hence the tendency to construct, measure, and argue over scalar (one number) metrics, even though they almost always ignore nuance. Even better, in many people’s eyes, are scalar, binary metrics, such as picking winners and losers. These metrics are almost always… [Read More]
New camera: marginal gain or material advantage?
There’s an interesting thread in the MF forum of DPR. A Youtuber says that these days, a new camera offers only marginal gains, not a material advantage. The basic argument is that we have passed the era of quantum leaps in performance, and that today’s cameras are so capable that you can do almost any… [Read More]
The Nikon Zf has both an AA filter and pixel shift
In the previous post, I said: …I’ll accept for the purposes of this discussion that no camera manufacturer uses pixel shift on cameras that have AA filters. I don’t know that that’s true, but I can’t think of any counterexamples. Erik Kaffehr found a counterexample, the Nikon Zf. In the spirit of scientific reproducibility, I… [Read More]
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