Just to done the 50D ISO800 simulation, the purpose is to view the result of the ISO800 performance since seem like the 50D ISO is some said (me too) is bad that 40D but the result seem like is ??? Can't said at the moment but need your opinion and suggestion.
This simulation is to compare the noise is from Camera or software, the software is Digital Photo Professional 3.5 from Canon and CS3 with Raw format update version 4.6.
In this case the 50D is apply to ISO800, NR=Standard.. other default in 50D
* The simulation is just base by my own experience with Canon 500mm F4 Lens and Tamron 28-75mm F2.8 Lens
Here is the link... ( files size a bit big )
http://www.pbase.com/me_photoshots/50d_iso800_simulation
The Simulate are ... ISO800 only
1, Convert from CS3 / DPP keep all setting default in CS3 / DPP (Full view and 100% crop view)
2, View from DPP with and without auto noise reduction (RAW files) - 100% crop
3, View from CS3 with or without sharp/noise adjust - 100% crop ( from JPG or RAW files )