To me, high-ISO performance and dynamic range are paramount and are the
single most important feature in choosing a SLR these days. Here are some
typical pictures I had to take two days ago:
ISO 12,800, FA 24-90mm @ 35mm f/4, 1/13s:
www.dariobonazza.com/public/K5_23830x.jpg
As you can see, above shooting data were not enough for freezing action and
getting the subject sharp. Hence, 3-4 extra stops would have come in handy
(i.e. ISO 100,000). This way, I'm going to supply a 'creative blur' image.
Last year, neither the K20D nor the K-7 were able to manage situations of
this kind and sometimes I had to give up shooting. This year, the K-5 came
to rescue.
ISO 10,000, DA* 50-135mm @ 85mm f/3.2, 1/60s:
www.dariobonazza.com/public/K5_23850x.jpg
In this case, ISO 10,000 was on the verge of getting the required picture.
Of course, a few extra stops would have allowed higher IQ.
ISO 8,000, DA* 50-135mm @ 55mm f/3.2, 1/60s:
www.dariobonazza.com/public/K5_23921x.jpg
In this case, ISO 8,000 was again on the verge for the required picture, and
I was able to get it only because I took them at the highest point of their
jump. Having an extra margin would be welcome.
I have to mention that flash was strictly forbidden.
I understand not everybody is facing such challenges, but I do appreciate
high ISO settings with good noise performance.
Cheers,
Dario
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