I'm a bit under the weather today, my last day to play around with the 6D on this trip. I tried to get out a bit this morning, but didn't make it very far, so I guess I'll wrap this up. No more pics, just my honest opinions and feelings about this camera.
First off, I was expecting the full fame 6D to be larger and heavier. As it turns out, the body is actually very slightly smaller than the 60D, but it does weigh about 15 grams or so more. With comparable lens attached, you don't notice the difference. Somehow still, the 6D does feel a little more solid. Construction wise, if I see one drawback to the 6D, it would be the fact that it doesn't have an articulating LCD. I really like the fact that I can flip the screen around on my 60D to protect it from getting smashed against a rock or something. I'm not careless, but I use my equipment. I would imagine hitting a camera against a rock hard enough to break the glass would damage more than just the glass, but it makes me feel better anyway.
Bringing the viewfinder up to the eye, the increased size is very welcome. I'm getting old, I had to get glasses a couple weeks ago, I just don't see as well as I used to. Aside from the increased size, it just looks brighter and clearer. I did notice that I had a harder time seeing the focus points on the focus screen, but that's a minor quibble. Speaking of focus, The 6D does a superb job. I usually count on having some random out of focus shots, and always take more than one. During the entire day yesterday, and shots here and there over the weekend, I think I ended up with 2. I did note some extra hunting a few times at close range while in pattern mode, but switching to select mode took care of it.
Battery life of both cameras is pretty comparable. I think the Instigator and I changed batteries at pretty close to the same time on Sunday. Both of us carry spares at all times, but 2 days and around 1000 images out of a battery makes it practically unnecessary.
I will quickly mention that I did run up against the shutter speed limit of the 6D yesterday. It caps out at 1/4000 vs 1/8000 for the 60D. It's pretty darn rare for me to get to speeds that high though.
I had planned on doing some low light shooting this morning, but didn't. There's enough info out there to prove the superiority of the full sensor. I'm a little disappointed that I didn't get a chance to do some of it, because I tend to shoot very early in the morning and very late in the evening or at night. For anyone interested, know that the 6D does not have a built in flash.
I've never tested my 60D, but I did find out last weekend that the 6D is pretty darn water resistant. The instigator slipped on a rock and fell into the creek on Sunday. The camera wasn't submerged, but did get absolutely drenched. We were able to dry it off with my shirt and a rocket blower, take the battery out and lens off to check for water, reassemble and go on our way. I was actually pretty impressed.
The 6D was my first choice when I last shopped for a camera, it just wasn't in the budget. To compare a full frame to a crop sensor isn't possible. Different worlds altogether. I see reasons to buy each one. The 6D with it's full sensor is still a better choice for most of what I do, most of the time. I am forever wishing I had the ability to get wider, shooting in tight areas most of the time. On the other hand, there was one thing that drove me nuts all day yesterday.... lack of reach! Refer to the first 2 photos in this thread and note the difference. Getting the same reach on a full sensor gets very expensive very quickly. Canon's EF-S lineup of lenses do not work with full frame cameras, although the EF series does work with crop bodies.
Do I still want a 6D? Even more than I did before I actually got to use one. Would I sell my 60D to get one? No. The 6D wins in almost every area I can think of. It should, for double the price. I love the wider view, the image quality, everything about it. There are times though, when I really want the reach. That's when I'd be reaching for the 60D.