I think the thing that may have caused the confusion is that EV is often used interchangeably with "stops". There are countless cameras out there that adjust exposure compensation in EV values relative to the current setting, not the absolute standard EV value. I should have described it as relative stops instead, but though the results were still meaningful. I approached it from the perspective of an experienced wedding photographer who has been frustrated with the single point in low light.
As to your quandary about the 5Diii vs 6D, let me ask you this. What kind of shooting are you primarily going to do?
Good question, a big old mixture is the answer I guess! over the years in no particular order architecture/family/aircraft/motor racing.
Next year unusually I have several events weddings/anniversaries/big holidays which are important to me and are without doubt a major driver to new kit. So stuff like the 5D3 flash AF assist issues and low light single point AF are important. That and I’m fed up camera sharing with my daughter. I have SD cards but the 5D3 doesn’t have fast SD, why Canon why!! I do like the faster fps but I want to be confident of focus in low light so lean towards 6D and the IQ looks a little better from what I’ve seen so far, but would the difference be seen on 20x16s I doubt it. I love prints, 20x16 max, If I get a few a year I consider worthy of my wall (yes wife has given me a wall in the house) I’m a happy bunny.
Overall I totally get what a well rounded camera the 5D3 is but boy are there things that just niggle. I love the thought of a camera that I really have to work at learning how to use I think the 5D3 AF system is a challenge, I want to have fun growing into it. I’m thinking of renting over Christmas but I really would prefer putting that money toward glass.
mmmm, you know I think this all boils down to for the most part that I’d be fine with either camera but which camera works best for those special events and that’s where I’m finding AF differences frustrating. The 5d3 should be a no brainer but it just isn’t…… aaarrrgggg