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Better late than never - going from A to E

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addy landzaat View Drop Down
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Post Options Post Options   Quote addy landzaat Quote  Post ReplyReply Direct Link To This Post Posted: 24 August 2020 at 16:24
@adhox: yes, that makes sense.
@Hezu: I was right, comparable You know the A99m2 does have Eye AF, though not animal eye AF.
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adhox View Drop Down
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Post Options Post Options   Quote adhox Quote  Post ReplyReply Direct Link To This Post Posted: 24 August 2020 at 16:31
Originally posted by Hezu Hezu wrote:

Originally posted by addy landzaat addy landzaat wrote:

The A7r3 is a "affordable" option, true. The A99m2 is much better then the A77m2, just like the A7r3. But without trying, I cannot say how much the A7r3 and A99m2 differ. And it seems there is no one with both the A7r3 and the A99m2 ...
I do! First, the comparison of AF in these two is perhaps somewhat complicated by the fact that you would need to either test with different lenses or rely on adapters, which may deteriorate performance. Secondly, my usage patterns for these two cameras are perhaps not quite representative for drawing final conclusions on AF since recently I have used α99 II almost exclusively with Sigma 150 mm F2.8 Macro and as non-Sony lens it does not cope with the full AF area.
But if hard pressed to choose a winner I would probably pick α7R III since it offers tricks like eye detect AF (including support for animals).

As I have complaints about the A99ii AF, I'll take that as a big for the 7Riii. I'll mostly be using native E lenses, and if I need to adapt an A lens then it probably won't be an issue - what would I shoot with a 16-35 that moves too fast for the AF to bite or track?

Am I correct in assuming that the 7iii and 7Riii are comparable for AF, and that the only significant difference is the Mp count?

All the reviews online discuss the first (beta?) release incarnations of these cameras, while they were still sexy enough to attract clicks and views, and there isn't much online on the current incarnations with multiple firmware changes.
A99ii + 16-35Z | 24-70Z | 24-105 | 70-200G | 100-300 | 70-300G
20 | 28 | 50 | 100M | 135Z | 135 | 300 | 500
A6600 + 10-18 | 16-70Z | 18-135 | 70-200/4G | 70-350G | 200-600G
28 | 56 | 85
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Hezu View Drop Down
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Post Options Post Options   Quote Hezu Quote  Post ReplyReply Direct Link To This Post Posted: 24 August 2020 at 17:04
Originally posted by adhox adhox wrote:

As I have complaints about the A99ii AF, I'll take that as a big for the 7Riii. I'll mostly be using native E lenses, and if I need to adapt an A lens then it probably won't be an issue - what would I shoot with a 16-35 that moves too fast for the AF to bite or track?

Am I correct in assuming that the 7iii and 7Riii are comparable for AF, and that the only significant difference is the Mp count?
If I'm not mistaken α7 III might have a slight edge: it sports more phase detection AF points than α7R III. But in practice that difference might not be that big.
Originally posted by adhox adhox wrote:

All the reviews online discuss the first (beta?) release incarnations of these cameras, while they were still sexy enough to attract clicks and views, and there isn't much online on the current incarnations with multiple firmware changes.
The firmware updates still cannot improve the hardware: so the differences in sensors, EVF and back LCD resolution haven't changed at all.
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Post Options Post Options   Quote Tricky01 Quote  Post ReplyReply Direct Link To This Post Posted: 25 August 2020 at 17:34
Originally posted by Hezu Hezu wrote:

The firmware updates still cannot improve the hardware: so the differences in sensors, EVF and back LCD resolution haven't changed at all.
While that's true for the points you mention, from reading about the latest AF features the OP discussed, the A9i did have firmware update to add this. I can't see it happening to the A7iii unfortunately, but it's interesting to see Sony add this retrospectively at all.
A7iii, 15f2, 16-35f4, 35f1.8, 85f1.8, 135f1.8GM, 100-400GM, 1.4xTC // A mount: Sig90f2.8 and Sig180f3.5 Macros, Gitzo Traveller, Flashes+PixelKings website
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Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 27 August 2020 at 09:57
Originally posted by owenn01 owenn01 wrote:

I just spent a day at Brands Hatch enjoying a days historic racing. I have a decent range of images from the day but, rather frustratingly, I find I have only a relative few of the cars coming towards me. Focus seems to be 'locked' but the shutter press then loses that fraction of movement that then takes the subject out of focus. or the camera doesn't seem to track the focus point altogether and I then don't get the image. All done using AF-C.

Makes you wonder how we managed to get sharp pics of motorsport with MF lenses and cameras, doesn't it?
Answer: We pre-focussed and waited until the vehicle got to the desired point. No AF required.
Miranda F & Sensorex, Sony A58, Nex-6, Dynax 4, 5, 60, 500si/600si/700si/800si, various Sony & Minolta lenses, several Tamrons, lots of MF primes and *far* too many old film cameras . . .
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Post Options Post Options   Quote owenn01 Quote  Post ReplyReply Direct Link To This Post Posted: 27 August 2020 at 10:22
Originally posted by Miranda F Miranda F wrote:

Originally posted by owenn01 owenn01 wrote:

I just spent a day at Brands Hatch enjoying a days historic racing. I have a decent range of images from the day but, rather frustratingly, I find I have only a relative few of the cars coming towards me. Focus seems to be 'locked' but the shutter press then loses that fraction of movement that then takes the subject out of focus. or the camera doesn't seem to track the focus point altogether and I then don't get the image. All done using AF-C.

Makes you wonder how we managed to get sharp pics of motorsport with MF lenses and cameras, doesn't it?
Answer: We pre-focussed and waited until the vehicle got to the desired point. No AF required.


Yes - but just think of all those images we missed because we were focussed on the 'wrong place' at the 'right' time? BTW - doing this a few times has allowed me to admire the motorsport photographers of old that stood at the perimeter of the track and shot on film with MF gear; they all had their own personal techniques to get the great shots we see from the archives. Bravery and skill in equal measure.

Thanks and best regards, Neil.
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Post Options Post Options   Quote QuietOC Quote  Post ReplyReply Direct Link To This Post Posted: 27 August 2020 at 13:04
Originally posted by owenn01 owenn01 wrote:

So - an open question for the people on this particular thread.

I just spent a day at Brands Hatch enjoying a days historic racing. I have a decent range of images from the day but, rather frustratingly, I find I have only a relative few of the cars coming towards me. Focus seems to be 'locked' but the shutter press then loses that fraction of movement that then takes the subject out of focus. or the camera doesn't seem to track the focus point altogether and I then don't get the image. All done using AF-C.

I currently have an a99i and lenses are 7-400G (I) and a 70-200/2.8. In all other respects it's spot on, but it is frustrating to not be able to get a specific viewpoint for some images.

The question? Would an a7iii or a7riii with e-mount equivalents be any better at hitting focus more reliably?

Thanks and best regards, Neil.

AF-C on my A7III worked well this past weekend at a motorsports event with a Canon EF 70-200 F4L USM using the Advanced Mode of the Metabones IV.

Sony's older 4D Focus Tracking used to hunt a lot in AF-C. At least that's what I experienced with the A6000, A77II, and A68. At least when giving them any option of which AF points to use. The A6000 was particularly bad.

The A7III doesn't have the Real-time Tracking of the A6400 and newer bodies, but it's AF-C seems more reliable than those older 4D Focus models. The Metabones IV Advanced Mode limits the phase-detect to just a few points in the middle of the frame. I generally was limiting those older cameras similarity to get more reliable AF-C.

I did shoot motorsports for many years with just a Canon PowerShot S1 IS solely with prefocusing.

Edited by QuietOC - 27 August 2020 at 13:17
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Post Options Post Options   Quote lonewolf Quote  Post ReplyReply Direct Link To This Post Posted: 27 August 2020 at 16:20
Shot the A7iii last weekend at a motorsport event and had plenty of great images.
Main advantage of the A7iii over the a7riii is more AF points and more coverage of the sensor.
May also be actually faster based on reviews i've seen too.

the Real-time tracking would be nice, but the a7iii has plenty of options for AF modes.
I found wide worked well (getting the front car and even focusing on open-wheeler helmets), as well as selecting a point and just doing the tracking myself.

Bang for buck the a7iii is hard to beat.
a7iii, 200-600, 28 F2, 85 F1.8 + lots of Nikon stuff
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