Congratulations to all that have the Sony A7/II/S systems. Advanced tech for sure. Takes most lenses with adapters. Zillions of ISO and the tech spec sheet continues.................
And therein lies the problem for me. My needs are fast focus acquisition and short lag time.
Don't need very high ISO....heck I am used to 400/800 film....but I need fast and accurate focus and the shortest possible lag. Not always, but more often than not.
The mind, controlling the eye, lens, sensor, camera and then processing, makes the photograph!
With the new Sony Sensors, an enrichment in the creative chain has been provided! They supply Hasselblad, Pentax, Leaf and Phase One 50MP CMOS cameras and the A7 and A6000 examples in Sony's own products are nothing short of marvelous!
Here, it's great to have your point of view, Fahim, as you have both the creative experience and the background to weigh the technical details. As to the focus speed, use the now bargain-priced A6000, which has amongst the fastest focus out!
From the picture, I gather you still have the bespoke Leica lenses!
So that's my assumption in this reply! Now the A7II, (and the A 7000 pending), Sony's 5 axis image stabilization brings new possibilities for your Leica treasures!
My experience is only with the Sony A7R 35 MP camera. It does not focus as fast as the A7, first version, as it misses out on Phase detection. However, I use a lot of carefully chosen MF vintage lenses from Pentax, canon FD and more as well as the native 55mm f.8 Zeiss-Sony stellar quality prime and Canon AF lenses with the nifty Metabones adapter.
In printing images to 26" x38" approximately, upressing the Sony A7R files to match the native size of Phase One 80MP back files and printing at 300 dpi, the Sony images more than hold their own.
I am currently reworking my Phase One files to see if I can leave the Sony images in the dust, so to speak.
So far, however, Sony punches at much higher than its MP weight.
It could just be that the Schneider 80mm prime lens, (that I rented for the test to pair with the 80 MP back), is not such a good performer as the Sony A7R with it's 55mm Sony-Zeiss lens or that I am not post processing Phase One files well enough. So I will work harder with the Phase One files using Capture One instead of Adobe Camera RAW!
Still,
at this point, I am in awe of the rich color and handling of light gradients with the A7R. The practicality of the Sony "Live View" with magnified "red edge"-assisted manual focussing in the amazing viewfinder, earns so many points for me, that speed of AF is not that important.
But for travel and street photography, the A7S has no peers in reaching into the shadows in low light, being able to focus where one can't see, and the A7II can give image stabilization to any other MFR lenses and both focus fast too!
So I'd revisit this brand. Sony essentially created the Professional mirrorless market for full frame cameras. I feel that you will fall in love with the A7II or the A7000 to further exploit your Leica lens arsenal!
Asher