Originally Posted by
DavidEccleston
Alright, so full-frame is nice, but are the IQ improvements I saw purely because of the full-frame sensor, or is it partially 1D specific? I know the 1D series does more work in analog before converting to digital, and it handles highlights really nicely. Would I be happy with the 5D3 or 5Ds, or do I crave some secret 1D magic, pushing me to a 1DX or something? I'm assuming the 6D won't keep up with my sports AF requirements.
So yeah, it's definitely worth considering, but if you cheap out too much, you might end up with a camera you can't always use. Try to avoid that. The 6D is newer, and has higher ISO capabilities, and can likely be found for a similar price. On the other hand, it's likely like the Rebel of the full-frame line, and has less controls. Is there a limitation of the 6D or a feature of the 5D2 pushing you to the 5D2 over the 6D?
If I get to the point where I am seriously considering the full-frame upgrade, I'd probably rent each body on successive weekends, and compare the results vs. price differences to try and answer the "Do the magic 1D secret sauce exist?" question. That may not make as much sense in your price-range, where the rentals costs would be a fair chunk of the body price, but that's my thought process about the upgrade...