In Dpreview een test van de Canon 7D. Interessant om even te kijken op de pagina van de noise. Vooral het deel van de RAW. In de vergelijking zijn er naast de 7D ook nog de 50D, 300D en de K-7.
http://www.dpreview.com/reviews/canoneos7d/page15.aspRaw Noise graphs
Again, the graphs below confirm what we can see in the sample crops. The 50D produces more chroma noise than the EOS 7D at higher ISOs. The Pentax K-7 is still slightly worse than the Nikon and EOS 7D at very high ISOs but the gap is smaller in RAW. At high ISOs the the 7D and its closest rival, the Nikon D300S, are more or less level in terms of chroma noise.
Dynamic Range compared
The EOS 7D's overall performance is pretty much in line with the competition in this test. Having said that at 3.3 EV the new Canon delivers slightly less highlight range than the EOS 50D (3.5 EV) and the Nikon D300S (3.8 EV). The Pentax K-7 measures the highest overall dynamic range but at 2.9 EV delivers almost half a stop less highlight range than the EOS 7D, with little rolloff and therefore harsh clipping.
Despite the comparable build quality and target group the Pentax K-7 is more than $600 cheaper than the EOS 7D and this is obviously reflected in its specification. It offers a lower resolution than the Canon, and comes with slower continuous shooting and a less sophisticated AF system than its rivals in this comparison. Having said that the Pentax offers many useful features such as in-body image stabilization, composition adjustment and in-camera RAW development, which make it an excellent deal for its money.
Using our benchmark RAW converter, Adobe Camera RAW, tries to equalize image processing between the two cameras and allows us to get a better idea of the level of detail actually captured. As you can see both cameras images look crisper and exhibit better detail, but the Pentax K-7 gains just a tad more more in relative terms. Nevertheless both cameras show impressive detail and, due to its higher nominal resolution, the Canon still resolves marginally more.
Helemaal zo gek nog niet om in dit rijtje te staan.