QUOTE(James P @ Apr 15 2008, 08:40 PM) [snapback]578862[/snapback]
Help me choose!
I've been a semi-serious photographer for a few years (but still have yet to take a decent "still-life" pen photograph!). Since 2003, my digital weapon of choice has been the Canon 10D. A friend of mine is offering up a Canon 5D at a pretty good price, and I've been shopping around online and have seen some decent prices (under $1K) for the Canon 40D. Both seem like excellent cameras, but I'm undecided about which to get - both have their advantages and disadvantages, as I see it.
The biggest advantage of the 5D is a full-frame sensor - I love wide-angle photography and would like to really enjoy those wide lenses again without a multiplication factor of 1.6x. On the other hand, the technology is going on 3-4 years old, and I've got this lingering sensation that Canon's about to replace the 5D with a successor, perhaps the 5D MkII.
The 40D features 10 MP, has live view and a new DIGIC III processor as well as a host of other features. It's primary drawback (for me) is the APS-C sensor. Other than that (and the 3 million fewer pixels), I think I'm leaning towards the 40D.
Is the image quality in one camera considerably better or worse than the other? Any other factors to consider here?
James
Hi James,
I'd like to add my 2 cents too, if you don't mind.
I currently own a 40D and 19 lenses (yes, you read that right, 19, almost as bad as my Etrurias

).
Essentially, my opinion, and that of many others, is that the investment is in the glass, not so much in the camera body. The latter has more or less become a consumer item, with new releases every 12 or 18 months these days (except for the 5D of course

).
The 40D is a newer camera than the 5D is, and I think that does show. Personally, I am planning to get a 5D II about 6 months after it is available, so that all the bugs are ironed out. For me the main reason not to go with the 5D right now is the fact that it is known to be a bit of a dust attractor, and that it is a relatively old model by now. Whether you need a full frame camera or not you can only determine, of course. The argument with regard to wide angle lenses on APS-C is a bit of a moot point these days, as several good UWAs are available for this format, and the Canon EF-S 10-22 is one of the best currently available in that regard, and by many regarded as an L-quality lens optically. Fisheye wise, there are several options nowadays, such as the Tokina 10-17 zoom fisheye (which can be used both on FF and on APS-C BTW), and two new Sigmas, namely the 4.5 F/2.8 (circular fisheye) and the 10 F/2.8 (diagonal fisheye).
All other lenses can be reused with an APS-C, as you know already, be it that you need to keep the crop factor of 1.6X in mind.It'll make the 50 F/1.4 a very nice portrait lens.
I did have a 350D to start with, followed by a 400D, and a second one, which I both sold to get the 40D. I only got the 40D because I needed better quality 1600 iso, and 3200 iso in a bind for the type of photography I was doing lately. The 40D is better again than the 400D in this regard.
What I do like about the 40D is the viewfinder, the exchangeable focusing screens, LiveView, the large and excellent LCD (much better than the 5D's BTW), and the excellent and very fast AF system (better than 5D I believe), the 3 user setting choices accessible via the mode dial, the incredible amount of shots you can take with a single battery load (I managed 4000 once, on a single load!) and 3200 iso of course.
What I like less is the bulk and weight, but then, I do like small cameras, after having had the small model Pentaxes in the past. That is the only negative I have found so far : ).
Another useful site for photgraphy info is POTN:
http://photography-on-the.net/forum/, which is dedicated to Canon, and overall a lot friendlier than dpreview.
Anyway, rambled enough for now.
Warm regards, Wim