Canon EOS 500D Rebel T1i vs. Eos 50D detail of Jpeg ISO test samples.

Samples data: imaging-resource.com.

☆Canon EOS 500D vs. Eos 50D ISO100-12800 Comparison.
From ISO100 to ISO400, The 500D's resolving power is better than 50d's .
However, when becoming high sensitivity, 500D's resolving power is not good.
At all ISO, The 500D's noise is concealed better than 50d's.
　　　　　　　　　　　　　
　　☆500D VS. 50D　　　　　　※Click to enlarge.
　　　　　　　　ISO100-800　　　　　　　　　　　ISO1600-12800
　　　　
　　　　　　　　　　　　
　　　　　　　　ISO100-800　　　　　　　　　　　ISO1600-12800
　　　　
　　　※500DExif and 50DExif/ISO12800.

Sony A900, Canon 5D Mark II,Canon 50D,Nikon D90 and Nikon D700 Comparison

at DigitalCameraInfo.com　
　　　　　　●Color Chart Comparison　●Noise Level Comparison
　　　　　　●Resolution Comparison　●Still Life Comparison

　　　　　　

Nikon D700 vs. D300 ISO Comparison.

Source: Cannockwolf / NikonCafe.com.
Cannockwolf: When i bought my D700 i still had a D300 so I thought I would do my own comparison tests on the famed ISO capabilities of the D700 against a not so feeble ISO capable D300 (... Read more)

　　　　　　　

Olympus E-620 - High ISO Image Quality 100% crop.

Source : FotoPolis
　　　 : Olympus E-620 - pierwsze zdjęcia testowe

※Click to enlarge.
●f4.6, 36mm, Programm Auto default setting.