16mm + uwa sharper than sigma 10-20

Started Apr 30, 2012 | Discussions
mrnike
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16mm + uwa sharper than sigma 10-20
Apr 30, 2012

Hello guys,

More than a month ago I ordered a sigma 10-20mm to use with my nex 5n. I used it for a month and I was not too happy with the sharpness in the corners. I sent it back and started to use my 16mm + uwa adapter and I must say quality is better than on sigma. Perhaps I had a bad copy of sigma but I'm not ordering another one for now.

I have a few shots I took yesterday here:

What do you think? I am happy with the corners

EWR72
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Re: 16mm + uwa sharper than sigma 10-20
In reply to mrnike, Apr 30, 2012

They look good to me. I´m thinking about getting the wide-angle adapter to go with the 16mm. I have the Sigma 10-20mm on my DSLR and it´s been okay but I bought the NEX to go ultra-light when travelling and I think the combination of the 16mm plus UWA looks very promising. If you have any more photos post them up as I´d be glad to see them:)

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Bill McClung
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Re: 16mm + uwa sharper than sigma 10-20
In reply to mrnike, Apr 30, 2012

Beautiful HDR shots! Since I retired, I miss my frequent trips to the UK.

I have the Sony 16mm and the fisheye adapter. That combination does VERY well (see link below). But, I have heard so many great comments about the WA adapter, I guess I'm going to have to get one. The price certainly is right. Thanks for posting.

http://www.pbase.com/nc_bill/image/141579512

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mrnike
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Re: 16mm + uwa sharper than sigma 10-20
In reply to EWR72, Apr 30, 2012

as requested a few more exaples of 16mm + uwa adapter.

I've got others on my website http://www.69drops.com if you want to see more

thanks

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EWR72
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Re: 16mm + uwa sharper than sigma 10-20
In reply to mrnike, Apr 30, 2012

Excellent. Thanks a lot for posting these. I´ll check out your link. It´s great to see some photos of Lonson again. I remember I bought my first digital camera back when I was living there. A Nikon coolpix 4300 for 200 pounds (half price sale). I even got a massive 256MB card that cost about 40 pounds back then! One of my favourite photos I took was a b&W of the Gherkin building. Once again thanks for the images.
Definately going to purchase the UWA converter lens.

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Bruce Itschner
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Re: 16mm + uwa sharper than sigma 10-20
In reply to mrnike, Apr 30, 2012

Beautiful Photos. I also find the 16mm with the uwa to do an excellent job. Its a nice two lens setup for walking around.
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Knallberto
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WHY
In reply to mrnike, Apr 30, 2012

do you not show REGULAR photos for comparing?

Sharpening 10x make each photo sharp till last edge. Same with (unnatural) HDR.

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geminihc
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Re: WHY
In reply to Knallberto, Apr 30, 2012

could you tell us what aperture you used? i also use the 16mm + UWA alot and i almost always get very soft blurry corners if f2.8 is used. i have to use f8 or above to get decent shots

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Gomez Garcia Gonzalez
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Re: 16mm + uwa sharper than sigma 10-20
In reply to mrnike, Apr 30, 2012

Really cool images. I think the HDR works really well for those scenes. I too have this lens combo but haven't been able to get the corner sharpness you have here, any tips?!

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PDavis
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Re: 16mm + uwa sharper than sigma 10-20
In reply to Gomez Garcia Gonzalez, Apr 30, 2012

I just bought this combo - looking forward to using it on my 5N. Selling my Sigma 10-20 (and my a55 for that matter!)

I'm ok with corner softness at wide apertures...the way I use it wide open makes that a non-issue...the edges are not important in those cases.

When I'm doing landscapes, I always stop down to f/8 anyway for greater DOF. Crop a little if necessary.

You will find it hard to get anything on a crop body that wide that looks really good in the corners. Maybe the Tokina 11-16 or Sigma 8-16 I've heard. But for the price, size and weight, the 16mm does the job (from what I've seen...will know first hand soon!)

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Smiert Spionam
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Re: 16mm + uwa sharper than sigma 10-20
In reply to PDavis, May 1, 2012

Corners on the 16, alone or with the adapter, are pretty wretched at f/2.8, and only really acceptable at f/8 (across most of the frame, f/5.6 is probably better, but f/8 has better corners). Still, it's not really notably worse than any but the very best of the wide zooms (the Sigma 8-16 and the Tokina 11-16 are probably the best), which aren't exactly stellar corner to corner, either. I find the 16 to be very usable, and the adapter has very little effect on overall quality.

These shots are meaningless for comparison, though. They're so heavily overcooked that they could be from anything. Glad you enjoy them, though.

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Lng0004
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Re: WHY
In reply to Knallberto, May 1, 2012

No it doesn't.

Knallberto wrote:

Sharpening 10x make each photo sharp till last edge.

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verybiglebowski
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Re: WHY
In reply to Knallberto, May 1, 2012

Knallberto wrote:

Sharpening 10x make each photo sharp till last edge.

Great news, I can sell all my lenses and keep the kit one. 10 x sharpening and no difference between Zeiss and Holga! Thanks for the tip.
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viking79
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Re: 16mm + uwa sharper than sigma 10-20
In reply to mrnike, May 1, 2012

mrnike wrote:

Hello guys,

More than a month ago I ordered a sigma 10-20mm to use with my nex 5n. I used it for a month and I was not too happy with the sharpness in the corners. I sent it back and started to use my 16mm + uwa adapter and I must say quality is better than on sigma. Perhaps I had a bad copy of sigma but I'm not ordering another one for now.

I have a few shots I took yesterday here:
What do you think? I am happy with the corners

Thank you for sharing your art work. They are nice shots with nice tone mapping. It is fairly excessive, but works well with these shots. Nice work!

However, I can't tell anything about the corners resized this small and the title of this post is misleading.

Eric
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Phil
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Re: 16mm + uwa sharper than sigma 10-20
In reply to mrnike, May 1, 2012

Nice job on the photos. I have the 16mm also with the wide angle adapter. I have found it really pretty good for landcapes at f8. The extreme corners aren't the best with this lens but it really is just the very tips of the corners on my lens that are noticeably softer. Thanks for sharing, your website has some geat work there also.

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mrnike
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Re: 16mm + uwa sharper than sigma 10-20
In reply to Phil, May 1, 2012

Thanks to everybody that liked my image.

I'd like to point out that sharpening was done in Lightroom and was not excessive. I always set it to 20 which is not much at all.

I'm sorry if the title was misleading but i just wanted to talk about my experience regarding the sharpness of the lens i had (sigma 10-20) comoared to the e mount wide angle.

Perhaps i should be posting 100% crops as these images are a bit small to actually discuss about corners. Will do this once back home.

Thanks

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zackiedawg
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Re: 16mm + uwa sharper than sigma 10-20
In reply to mrnike, May 1, 2012

If you could, maybe pull some samples out without any tone-mapping or HDR applied.

BTW - don't take some comments above to be criticism of your artistic work - the HDR/tone mapped look can be done very well, and some of your scenes above work extremely well with that technique of post processing. The reason some are asking for non-processed samples is because it allows one to actually review the lens' performance without any other influence. As soon as tone-mapping is applied, the contrast of the edges has been adjusted, the colors adjusted, the sharpness has altered, details become more bold, etc - and it becomes very difficult to assess the lens' actual performance.

So just for the sake of your original title, and those who really want to see what the 16mm lens and UWA converter are capable of, some 100% crops or even some resized originals would be very useful.

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mrnike
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Re: 16mm + uwa sharper than sigma 10-20
In reply to zackiedawg, May 1, 2012

Thank you Justin. I understand now...

I will post the originals (before tonemapping) later today.

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mrnike
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Re: WHY
In reply to geminihc, May 1, 2012

geminihc wrote:

could you tell us what aperture you used? i also use the 16mm + UWA alot and i almost always get very soft blurry corners if f2.8 is used. i have to use f8 or above to get decent shots

I used f8 and a tripod
I dont usually use f2.8 for this type of photos.

I will try to find something i used f2.8 and post it here

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