Which Full-Frame to buy?

[OGR4M]

My current set-up is a Canon 60D with a multitude of lenses (currently on eBay if you're interested!) but after about 3 years or so of ownership I've eventually outgrown the capabilities of the APS-C body, and therefore looking for a full-frame upgrade.

I've narrowed my search to 2 very similar (on the outside) bodies, the Canon 5D3, and the 5D4. Before anyone asks I won't entertain a 6D because I shoot motorsport and birds and other quick things which necessitate the better AF system.

Budget isn't really a concern for me, I'd happily buy either, but obviously I don't want to 'waste' the extra 50% outlay on the mk4 if the 3 is 99% as good. So basically, my question is which is the smartest/best choice for the (quite large) leap from basic crop to uber FF?

P.S. The old man says swap to Nikon, but we all know that isn't going to happen!

[AndrewEH1]

To be honest if you're mainly shooting motorsport and birds the additional reach of the crop sensor can be helpful!

As for full frame, I'd go with the Mk3. The upgraded Mk4 to me doesn't really have anything worth the massive additional cost! (Although I haven't managed to have a play with a Mk4!)

Perhaps worth saving some money getting the Mk3 and a very nice lens or two.

Edited by AndrewEH1 on Sunday 30th October 19:34

[singlecoil]

OGR4M said:

Budget isn't really a concern for me...

That being the case, and the need for speed, then the 1DX mkII has got to be the one to go for.

[RobDickinson]

If its a choice between the 5d3 and 5d4 then its an easy answer.

5d4 ever time.

Better AF, more resolution, much better dynamic range, cleaner shadows etc etc.