Re: Sigma 35/1.2 Art E-mount rolling review at phillipreeve.net
Holger wrote: NRKStudio wrote: Joeb359 wrote:
been playing around with the lens for a day now - subject separation is great, hopefully get some decent shots over the weekend.
yes, there's apparent CA/ purple/green fringing (at f1.2) in certain scenarios but lightroom managed to sort most of it out.
the sharpness is nice at F.1.2.
are you guys finding that theres quite a contrast jump from f1.2 to 1.4/1.6 etc? (slightly hazy when wide open)
a fair bit of hunting when using auto focus (that could either be me trying to get to grips with using a f1.2 or perhaps sigma will release a firmware update very soon?)
i found manual focus at f1.2 much better
I actually am not finding much difference from f1.2 to f1.4. More so 1.2 to 2 I can make out the pics getting tighter.
I’m also seeing some hunting though indoors around my house, especially with a subject closer to the edge of the camera. Not sure how much of this is attributable to the layout of on-sensor phase detect or the lens not being contrasty enough at the edge of frame at at 1.2 for good CD focus. Also of issue to me is that Eye-AF is not closing about 10-15% of the time. The 7r3 is placing a green box around the eye, but the shots will be slightly back or front focused (which at 1.2 means hair half way back my son’s head will be sharp or the shirt sleeve on his shoulder if he’s in profile).
Maybe that’s as good as it can get at 35/1.2 with eye af, but my other lenses just don’t miss, including the 55/1.8 and 28/1.4 Art, even the 28/2 FE.
Manual focus is a nice experience though. sigma does it right with the manual focus override. Unfortunately there’s no distance markings which were a nice touch on the other Art lenses. The other Art lenses also did manual focus over ride even in AF-C, I’m not sure if this Sigma will do that. Granted it is a little sketchy to “fight” the focus mechanism with AF-C.
"closer to the edge of the camera." What does that mean?
"not being contrasty enough at the edge of frame at at 1.2 for good CD focus." You are focussing outside the PDAF area on the A7r3? I never do that for people photography. CDAF is too slow for me.
"Also of issue to me is that Eye-AF is not closing about 10-15% of the time" At what distance? In-/outdoors? AFC/AFS?
I didn't detect any issues so far (my wife had around 3000 images done solely with the 35/1.2 and so far she didn't observe any issues in LR. The lens is super sharp and spot on, but I will check again.
Yes sometimes my subject is at the bottom left or right of frame, you are right though I shouldn’t do that if Possible.
Distance for focusing inconsistencies happened to me where I lost a good shot I can actually remember was at 2 feet, 6 feet, and 10 feet. There of course was some more.
Here’s a shot that was missed but I liked it regardless so I kept and printed it anyway. Notice the eyes out of focus. With this shot I had a green box around his left eye (camera right). I was in AF-C and he wasn’t moving much at all. You can see I was in a relatively decent shutter speed too. I believe I had the profoto a1x about 10 ft behind me too with a remote trigger, not sure if that matters, in fill flash mode, camera in manual.
Re: Sigma 35/1.2 Art E-mount rolling review at phillipreeve.net
Holger wrote: NRKStudio wrote: Joeb359 wrote:
been playing around with the lens for a day now - subject separation is great, hopefully get some decent shots over the weekend.
yes, there's apparent CA/ purple/green fringing (at f1.2) in certain scenarios but lightroom managed to sort most of it out.
the sharpness is nice at F.1.2.
are you guys finding that theres quite a contrast jump from f1.2 to 1.4/1.6 etc? (slightly hazy when wide open)
a fair bit of hunting when using auto focus (that could either be me trying to get to grips with using a f1.2 or perhaps sigma will release a firmware update very soon?)
i found manual focus at f1.2 much better
I actually am not finding much difference from f1.2 to f1.4. More so 1.2 to 2 I can make out the pics getting tighter.
I’m also seeing some hunting though indoors around my house, especially with a subject closer to the edge of the camera. Not sure how much of this is attributable to the layout of on-sensor phase detect or the lens not being contrasty enough at the edge of frame at at 1.2 for good CD focus. Also of issue to me is that Eye-AF is not closing about 10-15% of the time. The 7r3 is placing a green box around the eye, but the shots will be slightly back or front focused (which at 1.2 means hair half way back my son’s head will be sharp or the shirt sleeve on his shoulder if he’s in profile).
Maybe that’s as good as it can get at 35/1.2 with eye af, but my other lenses just don’t miss, including the 55/1.8 and 28/1.4 Art, even the 28/2 FE.
Manual focus is a nice experience though. sigma does it right with the manual focus override. Unfortunately there’s no distance markings which were a nice touch on the other Art lenses. The other Art lenses also did manual focus over ride even in AF-C, I’m not sure if this Sigma will do that. Granted it is a little sketchy to “fight” the focus mechanism with AF-C.
"closer to the edge of the camera." What does that mean?
"not being contrasty enough at the edge of frame at at 1.2 for good CD focus." You are focussing outside the PDAF area on the A7r3? I never do that for people photography. CDAF is too slow for me.
"Also of issue to me is that Eye-AF is not closing about 10-15% of the time" At what distance? In-/outdoors? AFC/AFS?
I didn't detect any issues so far (my wife had around 3000 images done solely with the 35/1.2 and so far she didn't observe any issues in LR. The lens is super sharp and spot on, but I will check again.
Yes sometimes my subject is at the bottom left or right of frame, you are right though I shouldn’t do that if Possible.
Distance for focusing inconsistencies happened to me where I lost a good shot I can actually remember was at 2 feet, 6 feet, and 10 feet. There of course was some more.
Here’s a shot that was missed but I liked it regardless so I kept and printed it anyway. Notice the eyes out of focus. With this shot I had a green box around his left eye (camera right). I was in AF-C and he wasn’t moving much at all. You can see I was in a relatively decent shutter speed too. I believe I had the profoto a1x about 10 ft behind me too with a remote trigger, not sure if that matters, in fill flash mode, camera in manual.
Aug 08, 2019 at 07:28 AM
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