Upload & Sell: Off
| p.196 #1 · Sony Alpha 7/7r/7s Images Thread |
Phillip Reeve wrote:
So you will get one in the near future? I am looking forward to your results.
Btw. did you check the MC 2/28? I bought one ages ago because of your nice results with it, but it has a colony of fungi in it and so far I haven't tried to clean it.
yeah, i'll order an a7 in the next week or two.
i did try out the 28/2 on the a7r, though i only took about 6 test shots with it. my impression is that it has a lot of spherical aberration and coma at f/2 that are almost completely eliminated my stopping down one stop. there is a pretty high level of CA towards the edges, but it seems to correct well. central resolution is very good though contrast is rather weak (possibly just my copy). edge resolution is good as well, but the extreme corners (last ~500px) fall off a cliff. part of that could be the adapter, but i got similar results on film where i would stop down to f/11 or even f/16 to get the very best from the extreme corners.
my copy has pretty egregious coating marks on the rear element that i believe probably lower the contrast a noticeable amount and i used a $15 adapter that almost certainly has some tilt to it, so take that stuff into account looking at the results. here is a shot wide open at mfd of the same flowers i posted earlier with the g28:
and some silver and black items relatively close:
a test shot at f/8 and infinity (possibly f/5.6 but i think f/8), note – i did correct CA in these in LR:
extreme corner crop:
the center crop at f/2:
and the corner crop at f/2: