I found the idea of cash'n out one brand for another an obstacle. I've read of so many who move from one brand to another and sometimes back again.
I had planned to "move on" from pentax when I added eos last spring. Now I am happy to have more than one brand this past year. In two or three years its impossible for me to say if my multiband kit will still exist but for now it works for me. Nice thing about ebay and buy sell opportunities you can recoup more of the purchase price if you buy right. For example my new eos 70-200mm 2.8 IS cost me $1459. If you study price, this was a very good deal from B&H last spring 2008.
In my move to add eos the 70-200mm 2.8 IS was my first two canon lenses I bought new. Easily this 2.8 zoom is the best lens I've ever owned covering this focal length. And as a bonus with IS lenses and VR lenses (nikon), you can see the image stabilize in the viewfinder. And something you might enjoy, add the canon 1.4x II Teleconverter and you'll be amazed with speedy autofocus, full metadata capture, & super fast image stabilization. All eos dslrs and eos film cameras drive usm lens motors too.
I think its wise for most anyone who's curious about full frame to add full frame canon or nikon to supplement you pentax gear. For now, I've choosen to keep pentax for their aps-c crop format: K20D is very nice camera.
But as I said, 1-2-3 years down the road its hard to say if I'll still have most of pentax gear. Some of it is adaptable to Eos, so I wouldn't ever fully cash out unless I wanted something else entirely. For me its who's offering the best hd dslr in 12-18 months... Right now, today nobody gets my vote. We'll see whats up with K-7, but with a Panasonic GH1 I can also adapt every pentax lens and assessory I own: with no added optics. So right now if I wanted HD video I'd buy GH1 and a few more adapters. Maybe $200 worth & I'm golden.
Bottomline, I have no regrets owning more than one brand right now. Having full frame takes the mystery out of whats up with full frame. Hands on is always the best way to make a long term decision.
Originally posted by awo425 I do not see it this way. This year I will buy FF Camera and 70-200 2.8 lens.
This is roughly $4000, and thanks to Hoya's board of directors and stock holders this money are not coming Pentax way. I will be also buying 50 F 1.4, 17-40 F4 and flash gun early next year in whatever mount my future FF camera will be. I've been waiting for the last year and a half and listen to a lot of BS from Pentax , Hoya and a bunch of people here on PF board that Pentax and Pentax croud do not need this camera, market share this, market share that, and yet I am a 15+ years Pentax user is going for it.