Pentax K-3 Versus Canon EOS 70D Versus Nikon D7100: One of the best performing of its type
The slightly lower scores from the K-3 mean it ranks slightly behind that of its closet rival bearing a similar 24-Mpix sensor, the Nikon D7100, but it fares well against the Canon EOS 70D.
The Pentax has +2/3 stop improvement in color depth over the Canon but around -1/3 stop less than the Nikon. Bigger differences can be seen in dynamic range where the K-3 has almost +2 stops advantage at base ISO over the Canon, and just less than -1/3 stop compared with the Nikon. In low light, the capabilities of the Pentax and Nikon are equal but you would be hard put to tell the +1/3 stop gain over the Canon in real world use.
Pentax K-3 Versus Sony SLT Alpha 58 Versus Sony SLT Alpha 77: Improvements over older semi-pro models
Alongside the older 20-Mpix Sony SLT A58 and the A77, which has a similar 24-Mpix CMOS sensor, the Pentax has an advantage in performance, particularly against the former model.
Compared with the A58 the K-3 has a +1/3 stop benefit in color depth and just under a +1 stop wider dynamic range but there’s nothing in it between it and the A77. Where the Pentax leads against the A77 is in its low-light performance.
However, while the K-3 has around +2/3 stop advantage over that and the A58, much of the difference in low-light capabilities can be attributed to the SLT mirror. Nevertheless, the K-3 maintains the lead in our sensor performance rankings, while offering some unique and promising features.
Further readings for the Pentax K-3 review: Unshakeable Image Quality
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Pentax cameras have always been innovative, and Ricoh has upped the ante with the K-3. Its image stabilization system not only reduces shake, but it can also simulate an anti-aliasing filter. The K-3 marks the latest evolution of one of the best-handling DSLRs in its class. It features a new autofocus system, 24 megapixel CMOS sensor, 8.3 fps continuous shooting, and USB 3.0 support. Has Ricoh put together a top-notch DSLR in the K-3?
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