very good. Image noise, naturally, was very low at ISO 50, still invisible at ISO 100, but became perceptible at ISO 200. However, the noise management works well, and images shot at ISO 400 were still quite usable. ISO sensitivity adjustments are very traditional....

• -Exposure

quality is perceptible most of all at ISO 1600; sensitivity settings up to ISO 800 more or less provide results that are usable without restriction. The Hassan II Mosque, Casablanca (Morocco). Nikon D70s, Nikkor DX 2.8/10.5 (fish-eye), 1/10 s f/4, ISO 1600....

low light. Noise is relatively well contained, but from 400 ISO, mottling becomes visible. It increases again at 800 ISO and becomes a real problem at 1600 ISO. The maximum sensitivity setting, 3200 ISO, shouldn’t be used unless you really need it. Given...

to typical SLRs as well. That means that the range of sensitivities is fully usable up to ISO 1600, and ISO 3200 is usable if you're ready to accept some visible noise and a perceptible reduction in image sharpness. Given the large size of the files as they...

with an optical drive. This latest roundup looks at three external DVD burners.. Our test procedure Read speeds: Time taken to copy three types of files from a DVD to the computer. ISO image: Time taken to create a 3 GB ISO image from our test...

ideal for photographing butterflies, but it's entirely possible! 55 mm, aperture priority, 1/100s f/11, ISO 800 Pentax istDL, aperture priority, ISO 200, 18-55 at 55 mm, 1/125 s f/8 Naturally these inexpensive lenses are limited, especially because they are...

curve by a point at X-axis 255, a black-gray alternation produces a point at X-axis 125, a black-gray alternation shows as 50, etc. The official ISO latency rating specified by the manufacturer is only for black/white transitions (0/255). While the value we...

of gray. A black-white alternation is shown on the curve by a point at X-axis 255; a black-gray alternation produces a point at X-axis 125; a black-gray alternation shows as 50, etc. The official ISO latency rating specified by the manufacturer is only for...