In fairness I did select a target that I thought, from seeing other 40D shots already posted elsewhere, might prove a challenge. I also raised the bar slightly by using ISO 400.
The test was a very personal one as was my conclusion. I haven't seen any complaints about bad
40D sensor noise. Indeed, on one site the reviewer even seemed to think that the 40D approached the IQ he would expect from a 5D
. Mind you, he does have a slight track record of such generous statements.
The strongest conclusion I would like to see drawn from the picture I posted is that it might be worth paying a little extra attention to the noise results obtained by expert reviewers, who will be working in controlled conditions and with a rigorous methodology.