D7000高ISO的PK賽, 與D300, D3(D700), 5D MK2!

由於D3, D700使用相同感光元件, 因此以下D3測試等同D700測試
http://kenrockwell.com/tech/comparisons/2010-11-08-d7000-d300-5dmarkii-d3-iso/index.htm
Recommendations(賽後總評)

At normal print sizes, all these cameras can make swell photos, especially at low ISOs.

The D7000 is easily the cleanest, but I prefer the D3 because it retains subject texture better. I want to see things as they are, not all smoothed-over, at high ISOs.

The D300 is the worst, as expected. Nikon deliberately used too much noise reduction to get the D300 to test well back when it came out, even though it makes the images look almost carton-like with their lack of real subject texture at high ISOs.


Analysis (個別分析)

I expected the D7000 to be the cleanest, and it is.

I expected the D300 to be the softest, and it is. The D300 uses too much noise reduction, and paints-over all the subject texture at high ISOs.

The D3 retains the most detail and subject texture at high ISOs, as expected from FX. The DX cameras use a lot more noise reduction to try to smooth-over the noise, and remove subject texture and details at the same time. Look at the monkey fur even at ISO 6,400: the D3 is crisp, while the D7000 is softer, and the D300 is just mush.

The Canon 5D Mark II looks softer, but that's because I didn't have its sharpening amped-up as I did in all the Nikons. Be forewarned, with the 5D Mark II's sharpening set higher, it would be noisier as well.

At ISO 25,600, the Nikon D3 is loaded with red noise specks (and its highlights loaded with smaller blue specks), while the Canon 5D Mark II shows horizontal banding in its noise.

At ISO 25,600, the Nikon D7000 is noisy, but devoid of annoying artifacts, making it much more usable at ISO 25,600 than any of these other cameras.