toptrainer wrote:
I’m looking in to getting an extra camera so I will have a back up when I go out shooting. I have found a Canon 5D Mark2 with the battery grip and very low shutter release for $700. I now own an 80D and was wondering if that would be a good camera for me to have as a backup. Is that a good price for the camera, or should I look into getting something that’s newer? I was looking forward to having a full frame camera.
It depends upon what you shoot...
5D Mark II is a fine 21MP full frame camera and that sounds like a really good price (original cost w/BG-E6 and an add'l battery was almost 4X as much).
The main drawback is that the 5D2 uses essentially the same, rather primitive AF system as the original 5D, dating from 2005. It was surprising to a lot of people that Canon didn't update the 5D2's AF, when it was introduced in 2008. And there have been a lot of advances and improvements in autofocus systems since then. The 5D-series finally got a MAJOR upgrade in AF with the Mark III model and saw some further improvements in the Mark IV.
As a result, the 5D2 is fine for a lot of things... portraits, landscape, architecture and more. But it ain't an "action" camera, by any means. Sure, you can use it for sports and active wildlife, but you'll get a higher percentage of missed focus shots with it, than you would with your 80D or a later 5D model or many other models. To put it in perspective, the most entry-level Rebel T6's and SL2 today have similar AF system (but faster processors might give them faster acquisition and better tracking).
5D2 also was ground-breaking as the first DSLR to be able to shoot HD video. It saw and still sees a lot of use by Hollywood... as well as other videographers and cinematographers worldwide.
So, depending upon what you want to shoot with it, that 5DII might be a good second camera... or not. Some good news is that 5DII uses the same battery as your 80D, so they can share. But 5DII uses Compact Flash memory cards, instead of SD like your 80D. The control layout of 5D-series is a bit different from 80D too... it's more similar to 7D-series.
Another consideration will be that, depending upon what you already have, you may need to spend some money for full frame-compatible lenses. You won't be able to use EF-S lenses on the 5D2 (some third party crop-only lenses might work partially, but need to be used with care because they might interfere with the mirror in the FF camera). I'm sure you know, FF cameras require FF lenses... While your APS-C 80D can use both FF and crop-only lenses.