The Hardcard wrote in post #3899769
I think it is valid to compare any cameras that you can afford. So the 40D with either camera. Whatever camera best allows you to do what you want is the one to get, within your budget. As such, all will get sales.
In my opinion, outside of 40DX vs. 400D/XTi and 40D vs. 350D/XT none of the Nikon and Canon offerings directly compare. D80 to 40D to D300 to 5D to1D Mk III to D3 to 1Ds Mk III all involve some vertical as well as sideways motion.
Exactly. Aside from the D40x vs. 400D and D3 vs. 1DIII, there are no direct competitors from the two camps in terms of price. D80 vs. 40D vs. D300 vs. 5D--there's enough price difference between each step to not make them direct competitors, per se. However as stated above, most shoppers start with a budget and work from there, but some of those shoppers can also be enticed to move up a step if the features are right--stretching their budget, if you will. That's why it's laughable to say that the D300 and 40D absolutely can't be compared because they're not the same price. Yes, they're different enough in price to be 2 different product tiers, but you can bet that anybody with up to a $2000 budget and no brand attachment will be looking at both as the top-of-the-line cameras from each manufacturer in this price segment. Both cameras are very good options at their respective prices, but the price difference isn't a barrier to comparing them.
As an aside, don't you think Nikon users will be looking hard at both the D300 and D3 to see which one will fit their needs better? They are very similar in a lot of their features, yet the price gulf is a whopping $3200! I believe that's not going to stop users from comparing the two and deciding between them. Obviously some will need/want the super high framerate of the D3, the fullframe sensor, etc., but others who can afford the D3 might find enough capability in the D300. This is analogous to all those "30D or 5D" threads we've seen in the past. The price gulf there is $1000+, so why compare them at all, right? Because it's all about what features you need/want and how much you're willing to pay for them, not about restricting yourself to only comparing cameras with identical prices.