30D VS 20D

[Sachphotography]

So I would really like some input here. What is that difference between the 30D and the 20D? Looking at the specs they are almost identical.

 

[KmH]

18 months. That's the length of time between the release dates.

According to DXO Mark there is little discernable difference in RAW image quality. There is a small improvement in the high ISO usability but color depth an dynamic range take small hits. They actually rate the 20D as having slightly better RAW IQ.

From that, one could think they tweeked their RAW file format.

If nothing else it would give them reason to start a new round of advertisement.