The sony was just a painful camera to use. The evf is very hard to use as it isn't very detailed- i.e., you can't see the expression of someone you are shooting if they further back full length from the camera. The evf also lags badly and smudges when its dark.
I rented a Sony A7R to complement my 5D3 during a two-week fall trip last year. While I loved the 36MP and better DR; the EVF was unusable for careful filter and compositional work. Its really bad when yellow aspens look green in the viewfinder, let alone try to figure out the placement of a ND Grad. Focus Peaking was nice however. My takeaway after two weeks - the A7R would be a fine alternate camera back - work and composite with the 5D, then replace with the A7R. Had Canon not announced a high MP, that would have been my 2015 strategy. But thankfully the 5DS is here so I can work everything out in the primary.
Now this is not a slam on Mirrorless... The A7R is a breakthrough camera. I just think EVF technology needs to improve.
For me personally, I think I will long-term be a DSLR guy - I see better than 20/20 at long (not so good close with contacts), so I want to keep that viewing advantage while I still have it.
This doesn't make any sense to me.
Why does color matter through the viewfinder if shooting RAW? You shoot RAW right?
How on Earth is it hard to place filters using the EVF? I use my Live View LCD for this very specific reason. Why is an EVF different? Why can't you use the rear LCD?
The word "unusable" brings images in my mind of people in infomercials who fall off a cliff when trying to eat their morning cereal with a regular spoon. Or can't open a cabinet without ripping the door off and having the house fall down.
I'm only being partially snarky, as I have not used the EVF in the A7, but I've used enough of them to question what you are having issues with? Just curious.
Unusable is completely accurate when you are shooting a advertisement and the person is very small in frame and you are trying to catch certain expressions. I guess you can look over the camera with your eyes, but that defeats the use of the EVF. I tried really hard to shoot a girl running through the woods for an advertisement and I just couldn't see what I was doing with the A7R, it was like looking at a old VHS video , delayed and smudged.
Of cause RAW is used! The colour is off with nikons, it can be fixed, but it is more work. Theres a weird green tone in the skin tones that tricky to fix. The canon skin tone are far better straight out of camera. All my retouchers have said this as well.
My post is based on shooting the sony A7R, the d800, the 810 and the canon 5dmk3 all together and alternating for a few months. I did own all of these cameras for a time (although i have sold the nikons now).
I do believe EVF's are the future, but they really aren't there yet! This is probably why arri has released a optical viewfinder alexa- i have heard all the complaints about EVF's from many DP's I have worked beside.