Thanks a bunch folks!
I took it out for a spin and ended up using the A7s most of the time (only a few shots with the A7r).
The refreshing feeling is with the flare control. It is a very sharp lens and quite contrasty.
This was shot against sun.
Untitled by
Vivek Iyer, on Flickr
A7s, FE 28/2, f/9, ISO640, 1/250, Matrix metering, +1.3 eV, DRO Auto, AF (multi).
I overexposed and adjusted it in the post (to take advantage of the camera's feature).
Infinity shots, not so nice.
Untitled by
Vivek Iyer, on Flickr
A7s, f/7.1, ISO500, AF
Reason is the huge distortion that also messes up the perspective. Distortion and perspective corrected to get the horizon nearly level and flat.
The bokeh is wonderful! :thumbs:
Untitled by
Vivek Iyer, on Flickr
A7s, FE 28/2, f/2.8, ISO500, 1/800s, Manually focused. ~0.8m distance.
I left the hood back. That was a mistake. Although the hood will do little (if anything) for flare and such, it will keep your finger grease off of the front element which is flat and very exposed.
So, keep the hood on all the time.
The lens isn't as small as I would like (!) but makes a good fit on the A7 cams. It is light. All the claims about this being "full metal" is BS. Build quality is exactly like the 50/1.8 OSS. Plastic with micron thick metal covering (how can it be lightweight and cheap if it isn't?). So, that fact alone rules out any use of the heavy and aweful converters for me.
The AF is quite fast (A7r) in good light. It is awesome on the A7s even in dim/poor light. AF is also very quiet. :thumbs:
Preliminary check (have to do it more thoroughly) indicates that it will do well for Infrared captures as well. :thumbup:
Overall, I am happy that I bought it.
PS: I put all the pics here in color deliberately. In B&W, a lot of manipulations can be done to taste.