Full frame hands down. It's not even a contest.

Once you go full frame you don't go back.

This post was edited by lithfkn on Jul 25 2011 08:28pm

Does going full frame film count? I've gone 6x7cm and I came back, begrudgingly..

You've gone back to 35mm?

Any reason? (besides the obvious extra expense)

that is a tough 1, but the 7D will prob suit you better, where as the 5D will suit 90+ % of the rest
i have the 5D and love it, although the AF is below what i was use to and expect
(the centre focus point is ok, but the rest are poor, and not in the optimal positions)
fps is acceptable, IQ is superb
i cant remember what lenses you have, would you get body only or 24-105kit or another lens?

Hesitating between kit and body only....
I will be left only with my 50 mm 1.8 after I sell my xsi, but kit is 300 $ more..
But if I want to buy a lens it will cost me more than that..
I love my 50 mm, great all around lens and very nice for portraits, and I usually rent the 70-200 2.8 for horse shows... but argh.... money money.... can't ever decide myself...
All will be put on credit card... so it's not really a smart move anyways, but I'm going crazy with the limitations of my xsi...

I went all the way back to 1.6 crop factor. The extra expense, the fact that I couldn't develop my own color film, and that I couldn't afford to go buying lenses for both digital and film formats.

then my suggestion is buy a decent lens IF you must buy something

I must change the body... the AF on the xsi is not the greatest, and I find that is my main problem when shooting fast action.. I have to do so much work on PS in order to cover it up

hmmm, well dunno if the 5D will suite you as only the centre AF point is acceptable
what about looking into an older used 1D? just a thought

This is why more and more I am considering the 7D... apparently it has a new very effective AF on all points....
So hard to believe those reviews and ratings cause you never know if they are really neutral and not one sided...