I am thinking about purchasing an M8. I currently have nothing but Nikon DSLRs and on a regular basis use ZF lenses. I am thinking about purchasing the M8 as a light option when walking the streets. I have done a lot of research and the one final question I can't seem to find is, what does the viewfinder of the M8 look like compared to the D700 or 5DMII for Canon users? I know it is a 1.3 crop, but is the viewfinder as small as say a DX DSLR? My concern is that I don't have the best eyesight but it is good enough to nail focus on manual focus lenses on the D700 since the viewfinder is so large. On my D90 (DX) I have a very hard time nailing focus with manual focus lenses because of the small size of the viewfinder.
So, question is, is the viewfinder more like the full frame DSLRs, crop DSLRs, middle or neither?
Thanks in advance
Regarding viewfinder:
I used to have a Nikon D300, looking for a FX Nikon, I played with a D700 and had a D3 in my hands for a few moments.
Once, I had the D3 viewfinder in my mind, the D700 looked like a toy in comparison. I loved my new D3 since then.
When I got my first Leica, the D3 viewfinder immediately shrunk to Canon PS optical peephole viewfinder size!
If you love the perception through your Nikon D700 viewfinder, you will L.O.V.E any Leica viewfinder immediately!
Everything is bigger and better. You can use it better with both eyes open than the DSLR viewfinder, as there is no parallax failure (you watch through the lens on the DSLR, but directly through a straight window on the RF camera).
I find manual focussing especially in low light easier with the RF than with the D3.
You just have to get used to the framing. Shooting with a non 100% viewfinder in the D700 though should bot be too difficult, to get used to the "imprecise" RF framing.
Depending on your usual subject distance you might like a M8 or M8.2 better (the frame lines are adjusted towards different focus distances and therefore more loose on the M8 and more precise on the M8.2 with further away subjects).