mike kobal
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 p.18 #11 · Sony 85mm 1.4 GM testing thread | |
Hi guys,
thanks for all the useful info, got a second copy
you can check my full write up here
http://www.mikekobal.com/sony-gm85mm-12copy-af-speed-compared-bokeh/
having a busy day, here it is..in a nutshell....
I want to share a few impressions I haven’t seen mentioned anywhere else last time I checked:
1) AF speed is noticeably faster, I repeat, noticeably faster, on the A6300 then on my A7rII (latest firmware installed).
I have a busy work week and can’t do a video to demonstrate, however, I don’t see such a drastic difference in AF speed with any of my other lenses. In fact, I don’t notice a difference at all.
2) MF focusing is a joy, except for lacking hard stops at the close and infinity mark, it truly mi-micks the feel of a quality mechanical lens and I wouldn’t hesitate shooting video in mf with this lens.
3) AF in video mode works exceptionally well, smooth and slow and near silent.
4) AF acquisition in challenging low light is much better then on the Batis 85mm. I had two Batis copies, although they focused a little faster in good light, both copies couldn’t nail focus on the images below (focus point, green square). No problems with the GM85 and FE55.5)focus accuracy spot on and I don’t plan to shoot this lens at smaller the f1.6  I will mostly use it wide open, despite having to correct purple/green frindging in post.
6)Aperture click/declick option. I wish there was a hard lock for the aperture, the clicks are rather soft and one could easily change the aperture on accident.
7)The rubber gasket around the mount is a joke, mine doesn’t even touch the body, too thin, the Batis has a substantial gasket you feel the resistance when attaching the lens.
8)soft, flexible lens hood, I find this to be a smart move in case you drop your lens and are lucky enough it lands on the lens hood, you’ve got a cushy suspension and this will most likely save your lens.
9)Compare the bokeh on the focus test shot, the 55mm on the A6300 yields a 82.5mm, bokeh characteristics similar to the Batis, although the Batis produces clearly softer bokeh, the GM85 takes it a huge step further.
10)AF speed compared to the competition: I had to pick up a few supplies at BH and they happened to have the Nikkor 85mm 1.4G, mounted on a Nikon D4s, they also had the Canon 5DS with the 85mm 1.2 L on display:
The GM85mm focuses noticeably faster then the Canon 85mm 1.2
No clear winner between the Nikkor 85mm 1.4 G and the GM85.It appears to be a tie, I might give the Nikon the edge by a small margin. The Nikon lens is also noticeably lighter and almost silent compared to the GM85.
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