>>4374584Hi,
By autofocus issues I was speaking specifically about backfocusing/frontfocusing which can be quite troublesome. They typically aren't that common but when they are you would need a specialist to fix it. I have had one with that issue but it was caused by a previous owner trying to tamper with it, trying to make the outer points more accurate at the cost of the accuracy of the centre point.
Regarding the picture, I think the noise is noticeable only because its about a 50% crop. The 5D's noise is good for it's age and so long as you aren't trying to pull shadows from the depths you probably won't have any issues. It's noise is also, and this is a matter of opinion, pretty pleasing and might not something that you'll want to remove necessarily.
It's a great camera, I'm you'll enjoy it. It's built really well. You might need to get a new port cover off aliexpress or a similar site though as those rubbers rot. 3rd part batteries might also be worthwhile, I have some extended life chinesium ones from eBay and since the 5D has no live view it's not uncommon for me to a few months on a single charge of one battery.
Thanks,
Ken.