Hi,
- There is not much to choose between the Nikon D810 and the A7rII regarding dynamic range.
- The Sony A7rII is very flexible regarding lens usage. I use it with HCam Master TSII and that allows tilts and some shift with most lenses on the planet.
- I mostly see the A7rII as an imaging device and it excels at that job.
The downsides are:
- EVF may not be good at following action
- AF is accurate but not as fast as Canon or Nikon offerings
- Battery life is short, due to small battery and electronic viewing. A DSLR uses photons for viewing and an EVF is using electrons for viewing, and those electrons are coming from the battery.
On the usability side the menu system is not very logical. You cannot even guess in which menu to look for an option.
- But I have two presets on the camera, one for tripod based shooting and one for hand held.
- Wish I could have more presets
- Most buttons can be reassigned to functions
- There is a function button to which 12 menus can be assigned
So I can set up the camera so I don't need to go into the menus.
I can use the camera with thin gloves.
- If I would shoot Canon lenses and was looking for high resolution and would be willing to give up quite a bit on DR, I would choose the Canon 5Ds/5DsR.
- If I would shoot Nikon lenses I would look for the Nikon D810.
- Looking for a flexible solution with an electronic viewfinder the A7rII is a good solution.
I am mostly shooting Canon lenses with the Sony A7rII, I have the 24/3.5 TSE LII, the 16-35/4L and the 24-105/4L and may buy the 100-400/4.5-5.6 LII. So, it may be feasible that I would possibly switch to Canon at some time, if I wanted or needed. Presently I use a Sony 70-400/4-5.6G for long work and a Sony 90/2.8G for macro. I also have two Contax (135) lenses used for tilt work, the 28-85/3.3-4 and the 35-135/3.3-4.5.
Even the Canon 24-105/4L gives good performance on the A7rII, se the images below:
The full image at 105 mm and f/5.6, 1/250s handheld with AF
Actual pixels crop.
A downside with Sony is repairs, AFAIK. None of my Sony equipment had issues, yet. It seems that some Sony customers get good and affordable repair services and others have bad and exoensive experience. Canon seems to have a very good repair service for professionals.
Best regards
Erik