![]() ![]() No, but in the meantime I realized what 85mm 1.4 means concerning DOF. Only time I ever had issues with the 85mm GM was when I was on firmware 3.10 and I mounted my GM after I ordered it and I couldn't lock focus on anything and it wouldn't even lock on the eyes and it made the most awful grinding sounds but after the 3.20 update it was like night and day. I use the flexible expandable spot 100% of the time when not using eye AF. ![]() I seriously do not understand the issues people are having with this lens. I I was shooting kids running in a park with shutter speeds at 1/1000-8000 and I never missed focus. I've owned the batis 85 the about 4-5 months and the 85mm GM for coming on 2 months. Of I will just use af-c and flexible spot - medium and try and keep the subject in the box as I would with my DSLR using AF-C and single spot autofocus. If those scenarios I stop down a bit and rely on lock on autofocus flexible spot - medium. For moving subjects, eye autofocus is a bit hit and miss, if the subject moves fast enough eye autofocus just cannot keep up. My Batis 85 nails eye focus wide open in good lighting on relatively static subjects pretty close to 100% of the time. If it is moving subjects, then it could be a shutter speed issue - I try and stay at 1/200 personally. Frankly, I have been on vacation with my a7rii for the first time shooting the batis 25/85 combo and some Nikon 135 f/2 and with the lens and/or IBIS stabilization I find being aware of my technique is not nearly the issue it is on even my 24MP D750, let alone my 36MP D800e. Bad lighting, you could have misfocus although my personal experience is that focus remains pretty accurate and just much slower (or won't focus at all if the light is bad enough). All tipps will be appreciated! BTW - Had the same issue with a Batis 85mm 1.8 some time ago.Īre you talking about seldom 100% sharpe on a static subject or are we talking about trying to capture moving subjects? If it is the former and you are in relatively good light, than I would think the issue is likely the lens itself, but given that you have said you had issues with the Batis 85 as well it makes me wonder if that is the answer or not. Could be also my technique of course but my 55mm Zeiss has no problems at all under these conditions. Activated Eye-Focus in AF-C Mode as well the central flexible spot AF-Field (Medium) generate slight front-focus. I’ll make some more tests with other lenses.Have a little trouble to get tack-sharp photos wide open with my A7RII and GM 85mm 1.4 lens. That’s moot, because we probably wouldn’t use those speeds due to exposure variation. They don’t appear to be important here - the exposure variation is more noticeable - but they probably would be at higher shutter speeds. Thus, depending on the characteristics of the lens the subject distance, the f-stop, and the place where you look in the image, we should see some differences. However, in theory, there should be bokeh effects of EFCS at high speeds, since the electronic first curtain is in a different plane than the mechanical first and second curtains. The bokeh differences appear to be minimal to me. There are some exposure variations at higher speeds. I developed the images in the current version of Lr CC, with default settings except the WB was set to 5000K/0, and a slight exposure boost. I continued along those lines until I got to 1/60 second. Then I turned the light down a stop, and did the same at 1/500 second. That gave me 1/1000 second shutter speed. I lit the subject with a Westcott LED panel, with color temperature set to 5000K and output on full. I set the lens wide open, and the ISO to 640. Still, it got me thinking, and I ran a quick test with a Sony a7RII and the Sony 90mm f/2.8 macro lens. It was a apples/oranges comparison, with the mechanical and EFCS shutter speed different from each other, and the EFCS set to 1/8000, which is clearly out of the range where EFCS usually works well. There was a recent post on DPR that showed dramatic effects on bokeh of EFCS.
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