When related to rivals, the new Canon’s scores look sub par. Compared with the $1,199 Nikon D7100 with its 24.1-MPix CMOS sensor the EOS 70D has -1.0 stop less Color Depth, -2.0 stops less in Dynamic Range and around -0.2 (1/5) stop less in Low-light ISO scores.
Pitched against the 2011, $1,098 Sony SLT Alpha 77 (again using a 24-MPix CMOS) the Canon is still behind except on Low-Light ISO where there’s an improvement. In real world terms, however, it would be very hard to see any difference.
Further readings for the Canon EOS 70D review: how does the new dual pixel CMOS AF sensor perform?
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During the early days of digital SLRs, Canon was pretty much the undisputed leader in CMOS image sensor technology. Almost every new EOS model came with an increase in resolution and high ISO range, and when the EOS 7D appeared in late 2009, the company had progressed from 3MP to 18MP, and ISO 1600 to ISO 12800, in just over nine years. But since then Canon's APS-C cameras have all sported variants on the same basic sensor design, to the extent that you could be forgiven for wondering what on earth their engineers were doing all day. Now we know.
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