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A-Mount Ultrawides

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arteephact View Drop Down
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Post Options Post Options   Quote arteephact Quote  Post ReplyReply Direct Link To This Post Topic: A-Mount Ultrawides
    Posted: 08 February 2019 at 22:27
I am looking to gt an ultra-wide zoom for my A77II...

It looks like the primary contenders are :

Sigma 10-20 3.5
Tokina 11-16 2.8
Tamron 10-24 3.5-4.5

Primary use would be I guess classified as architectural.

Theme Parks / Rides / Building Exteriors / Displays

Just curious if people have used these with the A77II and found one to provide better results than the other.

Thanks
 



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Atom Ant Oz View Drop Down
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Post Options Post Options   Quote Atom Ant Oz Quote  Post ReplyReply Direct Link To This Post Posted: 08 February 2019 at 22:55
I have the Sigma and it works well on the A77ii. This thread has prompted me to see how it works on my A99ii - reviews suggest that it can be used on FF at the longer end and my widest FF zooms start at 24mm.

There is also a cheaper Sigma 10-20/4~5.6 which I haven't tried.
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A6500 + 10-18 | 16-70Z | 18-135 | 70-200/4G
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Post Options Post Options   Quote coyote1086 Quote  Post ReplyReply Direct Link To This Post Posted: 09 February 2019 at 00:26
If you want to go even wider, there is a Sigma 8-16mm F4.5-5.6

My copy seems de-centered as the right side of the image is blurry compare to the left side below 10mm.

If getting these wide angles lenses, ensure to check the image quality on both sides very carefully.
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Post Options Post Options   Quote 2manycamera Quote  Post ReplyReply Direct Link To This Post Posted: 09 February 2019 at 02:17
I use the Tokina 11-16/2.8 on the a77. In most regards, I will say it should do a fine job, with the possible exception of building exteriors. It is not a "perfect" rectilinear lens, so I would say to keep straight lines away from the image edges. The curvature is not terrible, just not good enough to charge customers with the results if that is a need for you. I started to use this lens for interiors for realtor house listings, and was never really satisfied. Today I use the a7 with the Voightlander 15/4.5, which is outstanding.

I know of no comparable ultra-wide prime available in APS-C or FF A mount. So one of these zooms may be your only choice, if there is a better option, I'm not aware of what that would be.
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Post Options Post Options   Quote addy landzaat Quote  Post ReplyReply Direct Link To This Post Posted: 09 February 2019 at 10:18
For me, it would be the 10-24 because of the 24mm long end. I use UW as a walk around lens and 24mm is better then 20mm let alone 16mm.

Looking at your intended use, I think you want a lens that doesn't have too much distortion. So, I went to Optical limits:
Sigma 10-20/3.5
10mm: - 2.75%
15mm: - 0.164%
20mm:   0.511%

Tokina 11-16/2.8
11mm: - 2.12%
13mm: - 1.39%
16mm: - 0.612%

Tamron 10-24/3.5-4.5
10mm: - 2%
14mm: - 1.9%
18mm: - 1.6%
24mm: - 1.6%

It seems the Sigma is the best one off the 10mm mark. Some people say you can correct distortion in post, but there is no free lunch.
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Post Options Post Options   Quote SnowFella Quote  Post ReplyReply Direct Link To This Post Posted: 09 February 2019 at 10:29
No love for the Sony DT 11-18mm?
Mine seem to be doing alright in most situations other than most of the time feeling way too wide on the 11mm end. Guess that might be coming from using an old Tokina 19-35mm lens as my main wide option for years.
 



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Phil Wood View Drop Down
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Post Options Post Options   Quote Phil Wood Quote  Post ReplyReply Direct Link To This Post Posted: 09 February 2019 at 11:47
I have the cheaper Sigma 10-20mm f4-5.6 which does a good job on those wide architectural shots. If the f3.5 is better (as is reported) than it would be a pretty fine lens.

@addy - do you have distortion figures for the cheaper Sigma and/or the Sony/Minolta 11-18mm?
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Post Options Post Options   Quote QuietOC Quote  Post ReplyReply Direct Link To This Post Posted: 09 February 2019 at 12:27
I also had the older Sigma 10-20 F4-5.6. It was pretty decent around 12 mm. That was where it had the least distortion. I used the Capture One profile for it. The image quality from 16-20 mm wasn't as good as normal zooms. The corners got worse wider than 12 mm.

The Samyang 12 F2 manual prime is a very good reason to buy an APS-C mirrorless camera. I haven't found anything to replace it with.
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Post Options Post Options   Quote addy landzaat Quote  Post ReplyReply Direct Link To This Post Posted: 09 February 2019 at 12:37
You can find them onOptical Limits . But here you go:

Sony/Minolta./Tamron 11-18
11mm: - 2.69%
14mm: - 1.63% (1.66% Sony)
18mm: - 0.883% (0.924% Sony)

I am surprised by the difference between the Tamron (on Canon) and the Sony. Probably sample variations?

Sigma 10-20/4-5.6
10mm: - 1.35%
14mm: - 1.09%
20mm: - 0.631%

Be aware they tested one lens and looking at the Sony/Tamron 11-18 this is only indicative I guess.
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Post Options Post Options   Quote addy landzaat Quote  Post ReplyReply Direct Link To This Post Posted: 09 February 2019 at 12:48
Optical Limits did not test the Samyang 12mm, but Lenstip did and they found it was at - 1.88%. But I do not think you can compare this figure with the ones from Optical Limits.
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Post Options Post Options   Quote QuietOC Quote  Post ReplyReply Direct Link To This Post Posted: 09 February 2019 at 13:27
Originally posted by addy landzaat addy landzaat wrote:

You can find them onOptical Limits . But here you go:

Sony/Minolta./Tamron 11-18
11mm: - 2.69%
14mm: - 1.63% (1.66% Sony)
18mm: - 0.883% (0.924% Sony)

I am surprised by the difference between the Tamron (on Canon) and the Sony. Probably sample variations?

Maybe that is why Sony never added in-body Lens Compensations for the 11-18. I have seen premade lens profiles make images worse.

Tolerance requirements seem to scale with focal length. Ultra wides tends to be expensive and still highly variable.

The tiny 3.8-5.9 F3.7-4 wide zoom for my Pentax Q is rather expensive while the 15-45 F2.8 "telephoto" zoom is quite affordable.

The FE ultra wides are probably much easier to make.

At least these old APS-C ultra wide zooms are rather affordable used.

Edited by QuietOC - 09 February 2019 at 13:47
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Phil Wood View Drop Down
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Post Options Post Options   Quote Phil Wood Quote  Post ReplyReply Direct Link To This Post Posted: 09 February 2019 at 15:38
Originally posted by addy landzaat addy landzaat wrote:

You can find them onOptical Limits . But here you go:

Sony/Minolta./Tamron 11-18
11mm: - 2.69%
14mm: - 1.63% (1.66% Sony)
18mm: - 0.883% (0.924% Sony)

I am surprised by the difference between the Tamron (on Canon) and the Sony. Probably sample variations?

Sigma 10-20/4-5.6
10mm: - 1.35%
14mm: - 1.09%
20mm: - 0.631%

Be aware they tested one lens and looking at the Sony/Tamron 11-18 this is only indicative I guess.


Thanks for the link and the data.
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Post Options Post Options   Quote dxqcanada Quote  Post ReplyReply Direct Link To This Post Posted: 09 February 2019 at 16:04
I had the Tamron ... found it was too soft, never could get sharp images. I got the Tokina and it was much better, even wide open.
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Post Options Post Options   Quote Dena Quote  Post ReplyReply Direct Link To This Post Posted: 09 February 2019 at 16:11
I have the Tokina. A little soft in the corners, but I like it.
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