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A7RIII with sigma100400 vs A7III with sony100400

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Imaginations View Drop Down
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Post Options Post Options   Quote Imaginations Quote  Post ReplyReply Direct Link To This Post Topic: A7RIII with sigma100400 vs A7III with sony100400
    Posted: 26 November 2020 at 14:29
Hi all,

It's been a while again, hope everybody is ok :)
I have finally decided to swith from A mount to E mount and could use a little help deciding on the best way to go forward.
I use the A77II with sony 70-400 and mainly shoot animals in zoos and in the wild.

I always thought I would go for the A7III with the sony 100-400 and a teleconverter to get the same reach as I have now with the aps-c camera ( I am very used to using 600mm).
But I saw some videos about the 7III vs 7RIII and now I'm thinking maybe the 7RIII is a better choice and definatly a cheaper choice if the combo with the sigma 100-400 is a good option. I wouldn't have to buy a teleconverter, I could use to crop mode and still have 18 MP photos or will have lots of room to crop on the PC. I just can't seem to find any reviews on this combo.

I am hoping someone here has the A7RIII with sigma 100-400 and can tell me about it or someone who knows a good review about it. Any help will be much appreciated :)
 



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QuietOC View Drop Down
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Post Options Post Options   Quote QuietOC Quote  Post ReplyReply Direct Link To This Post Posted: 26 November 2020 at 15:02
I've decided that the A7RIV is probably the best body option. 100-400 doesn't offer much over a smaller, lighter 300 mm zoom. I wish the 200-600 had more focal length. It also accepts the FE teleconverters.

The plain A7 models have some anti-alias filter. I like that for sharp primes, but it is a drawback in this case.
Sony A7RIV NEX-5T HVL-F45RM LA-EA3 LA-EA4r MB-IV MC-11 EF-E II TLT ROKR MD-NEX KR-NEX DA-NEX
Minolta Maxxum 600si
Pentax Q7 5-15 15-45/2.8 8.5/1.9 11.5/9 AF-P/Q
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Post Options Post Options   Quote Imaginations Quote  Post ReplyReply Direct Link To This Post Posted: 26 November 2020 at 15:42
thanks for your input. The A7RIV is out of my price range unfortunatly.
I don't think I will mind the weight of the 100-400, my current lens is heavier. I do wish that the 200-600 was a bit lighter though!
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Post Options Post Options   Quote 2manycamera Quote  Post ReplyReply Direct Link To This Post Posted: 26 November 2020 at 15:55
I can give you a partial opinion, as I'm using the Sigma 100-400 on the a7Rii and a6600.
With the a7Rii on AF-S focus, it's outstanding. The sharpness of the lens works very well with the 42mp sensor.
On AF-C focus, it's not quite as dependable. I put this on the camera, not the lens, as the a6600 superior focus is excellent in AF-C with the 100-400 Sigma. I know there are differences in the AF between the Rii and Riii, but cannot comment on how much this will improve performance.

For my usage (we have a family of golden eagles that appear over the house on a frequent basis) the a6600/100-400 DG DN combo is the most useful.
7D a68 a99 a6600 a7Rii 16/2.8 24/2.8 28/2 35/2 50/1.4 100/2 200/2.8 24-70CZ 1.8/135 80-200/2.8 24-105 28-135 300/4 16-50DT 70-300G Tam 90/2.8, E55-210 E2/12 Sig E1.4/16,30 & 56, FE15/4.5V
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Post Options Post Options   Quote Wētāpunga Quote  Post ReplyReply Direct Link To This Post Posted: 26 November 2020 at 21:59
Originally posted by Imaginations Imaginations wrote:

...
I am hoping someone here has the A7RIII with sigma 100-400 and can tell me about it or someone who knows a good review about it. Any help will be much appreciated :)


I do have this combination. I haven't given it a lot of testing with wildlife (more bird shots), but it does seem to have a decent hit rate with its AF tools, and generates good images at the long end.

Its performance does jump in good lighting conditions. I think the small aperture at the long end does slow locking on to subjects a bit at the margin in poorer light.

It is quite manageable in size also.
a77ii- Sony 135/2.8 STF, 16-50/2.8, 70-200/2.8 G
a7riii- Voigtländer 15/4.5, Zeiss Loxia 21/2.8, 35/2, 50/2, 85/2.4, Batis 85/1.8, Voigtländer 110/2.5, Sony 24-105/4 G, Sigma 100-400 f5-6.3.
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Post Options Post Options   Quote C_N_RED_AGAIN Quote  Post ReplyReply Direct Link To This Post Posted: 27 November 2020 at 00:20
the sony 100-400 is the best 100-400 period sharpness and focus acquisition speed surpass its rivals. save some more and get the riii ans sony lens
 



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Post Options Post Options   Quote 2manycamera Quote  Post ReplyReply Direct Link To This Post Posted: 27 November 2020 at 01:25
Originally posted by C_N_RED_AGAIN C_N_RED_AGAIN wrote:

the sony 100-400 is the best 100-400 period sharpness and focus acquisition speed surpass its rivals. save some more and get the riii ans sony lens


Every thing you say is absolutely true, but it's $2500 vs $950 for the Sigma, and when B&H had it for $850 about a month ago, there was simply no question, it was the Sigma. Sometimes you have to make the economic choice.
7D a68 a99 a6600 a7Rii 16/2.8 24/2.8 28/2 35/2 50/1.4 100/2 200/2.8 24-70CZ 1.8/135 80-200/2.8 24-105 28-135 300/4 16-50DT 70-300G Tam 90/2.8, E55-210 E2/12 Sig E1.4/16,30 & 56, FE15/4.5V
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Post Options Post Options   Quote Imaginations Quote  Post ReplyReply Direct Link To This Post Posted: 29 November 2020 at 10:52
Thx all for the input! Very much appreciated!
I do agree that the sony 100-400 is the better lens, but what 2manycamera says, sometimes you have to make the economic choice and that's what I did.
After many hours of thinking and calculating and seeing some more reviews on the camera overall, I bought the A7RIII :D
No lens yet, I bought the LA-EA5 so I can use my 70-400 and 70-300 A mount lenses for the time being untill I can figure out which E mount lens I want. I want to rent a few lenses next year like the 100-400 and 200-600.
And who knows what other lens brands will bring to the table besides the 100-400 sigma, maybe they will make the 150-600 for E mount or maybe tamron will do something like that. We'll see.
I am looking forward to put my new baby to use and learn how it works, but I have to wait for the adapter (it was out of stock, will hopefully arrive next week)

@2manycamera: wow, so great you see a family of golden eagles often, such beautiful birds!
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Post Options Post Options   Quote Wētāpunga Quote  Post ReplyReply Direct Link To This Post Posted: 29 November 2020 at 22:27
Originally posted by Imaginations Imaginations wrote:

Thx all for the input! Very much appreciated!
I do agree that the sony 100-400 is the better lens, but what 2manycamera says, sometimes you have to make the economic choice and that's what I did.
After many hours of thinking and calculating and seeing some more reviews on the camera overall, I bought the A7RIII :D


Indeed, you have to pay a lot extra for the benefits of the Sony 100-400.

I hope you enjoy the a7Riii. It was quite the change for me coming from an a77ii and a7R. It was the first E-mount camera that felt like a proper DSLR replacement to me. It's a very capable and versatile camera.
a77ii- Sony 135/2.8 STF, 16-50/2.8, 70-200/2.8 G
a7riii- Voigtländer 15/4.5, Zeiss Loxia 21/2.8, 35/2, 50/2, 85/2.4, Batis 85/1.8, Voigtländer 110/2.5, Sony 24-105/4 G, Sigma 100-400 f5-6.3.
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Post Options Post Options   Quote Imaginations Quote  Post ReplyReply Direct Link To This Post Posted: 11 December 2020 at 11:56
Thanks! I took it for a spin last weekend and was quite happy with the result. Didn't have time yet to dive into settings details, so I just let it do it's thing and was quite amazed with the normal AF and also animal eye AF. I like the feel of the camera, but will have to get used to where the dials in buttons are, but I think I will enjoy it very much, especially after digging into the settings and stuff like that.
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Post Options Post Options   Quote Wētāpunga Quote  Post ReplyReply Direct Link To This Post Posted: 11 December 2020 at 20:55
@Imaginations

I was similarly amazed with the first event I shot with it. The AF system nailed the focus with the Face/eye recognition every time. And it is capable of so much more.

It’s very customisable. I have assigned a lot of the still photography custom buttons to suit my (manual) landscape photography. And run a different customisation for video.

One thing that does puzzle me is the wheel has a preset for WB. And I almost never have to change that quickly during a shoot. I’ve assigned the ISO to the wheel over the WB. Because that’s something I don’t want to menu dive to change.

Compared to the first generation A7R it really does feel like a much better camera ergonomically as well.
a77ii- Sony 135/2.8 STF, 16-50/2.8, 70-200/2.8 G
a7riii- Voigtländer 15/4.5, Zeiss Loxia 21/2.8, 35/2, 50/2, 85/2.4, Batis 85/1.8, Voigtländer 110/2.5, Sony 24-105/4 G, Sigma 100-400 f5-6.3.
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