Love this thread. I am killing myslef with exactly the same question. I have a 20D and my wife has a 5D. But I WANT the 1ds Mk3. Now I have that out of the way I have to work out why I NEED the mk3 and what I would use it for.....not such an easy task IMO.
I am an all rounder when it comes to photos, but my passion is motorports. I know you might think the 1dm3 is the way to go, but I can't see myself needing 10fps, 5fps is fast enough for me. Also, all the pro formula one shooters use the 1dsmk2 so it must be good enough!!
I have reached the limits of the 20D in IQ and capabilities and am constantly striving for more - I find the camera is holding me back. I don't think the mk3 will help with core skills such as composition etc, but I do see it giving a more satisfactory image. The 5D (when I can get it) is much better than the 20D, but its AF is unpleaseant - bareable but hard work at motorsports events. Weather proofing would be so useful for most of my favourite shooting climates - oh the rain!!
So I can see that I would "use" the mk3, maybe not to its utmost capabilities, but certainly enough - but what about the hard questions.
The good news:
- I can afford it, no problem
- I shoot for stock libraries so do make a little money from photogrpahy (not enough to warrant a pro label, but I can see this camera really opening my opportunities).
- all my lenses are L series, so no issues there
The bad news:
- I am an amateur - do I really need pro gear?
- It is a lot of money!!
- No really, it is a lot of money!!!!
After all that to-ing and fro-ing, I came to one conclusion.....
Try it before I buy it.....there is no substitute for seeing if it really makes a difference to my photos - maybe the 20d limitation is me, not the camera - tyring the mk3 will certainly answer that question.
Roll on November - and good luck to all in making thier own decision
