November 23, 2014, 02:11:55 PM

Author Topic: The Sigma 18-35mm f/1.8 DC HSM Lens is Very Sharp  (Read 10479 times)

LetTheRightLensIn

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Re: The Sigma 18-35mm f/1.8 DC HSM Lens is Very Sharp
« Reply #15 on: July 23, 2013, 05:53:20 PM »
Isn't DXO the company that tests DSLR sensors without lenses?

thankfully yes

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Re: The Sigma 18-35mm f/1.8 DC HSM Lens is Very Sharp
« Reply #15 on: July 23, 2013, 05:53:20 PM »

wsmith96

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Re: The Sigma 18-35mm f/1.8 DC HSM Lens is Very Sharp
« Reply #16 on: July 23, 2013, 06:14:39 PM »
Wow.  Nice test results.
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Jon Gilchrist

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Re: The Sigma 18-35mm f/1.8 DC HSM Lens is Very Sharp
« Reply #17 on: July 23, 2013, 06:19:03 PM »
So does this mean I should sell my Sigma 35/1.4 and get the 18-35 1.8?

Pi

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Re: The Sigma 18-35mm f/1.8 DC HSM Lens is Very Sharp
« Reply #18 on: July 23, 2013, 06:32:07 PM »
So does this mean I should sell my Sigma 35/1.4 and get the 18-35 1.8?

I have seen examples of horrific bokeh from the new Sigma zoom. The Sigma 35 is far from being a bokeh champion, either, but the zoom seems to be worse. I would wait to see more real world samples.

bradfordswood

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Re: The Sigma 18-35mm f/1.8 DC HSM Lens is Very Sharp
« Reply #19 on: July 23, 2013, 09:10:27 PM »
So does this mean I should sell my Sigma 35/1.4 and get the 18-35 1.8?

I have seen examples of horrific bokeh from the new Sigma zoom. The Sigma 35 is far from being a bokeh champion, either, but the zoom seems to be worse. I would wait to see more real world samples.

Any examples of this horrific bokeh you can point us to?

bvukich

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Re: The Sigma 18-35mm f/1.8 DC HSM Lens is Very Sharp
« Reply #20 on: July 23, 2013, 09:36:21 PM »
Yes I too was expecting about 2.2
DXOMark said it's 1.8, although that is pretty unusual

Oh, wow... that is quite unusual.  If correct, bravo Sigma, bravo.

weixing

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Re: The Sigma 18-35mm f/1.8 DC HSM Lens is Very Sharp
« Reply #21 on: July 23, 2013, 11:22:13 PM »
Hi,
I thought we are not supposed to trust DxO considering they are in the pocket of everyone-not-canon.

Seriously, this is a SWEET lens, perfectly suited for 7D..
    Just don't look at their single finally DXOMark Score, but their measurement result should be valid.

    What is interesting is their sharpness score for various body:
1) 7D: 13P-Mpix
2) 700D: 15P-Mpix
3) 100D: 14P-Mpix

    All 3 are supposed to have the same 18MP sensor... different due to AA filter or it's just a variation between the same sensors or may be due to different image processing done internally by the DIGIC processor?

    Have a nice day.

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Re: The Sigma 18-35mm f/1.8 DC HSM Lens is Very Sharp
« Reply #21 on: July 23, 2013, 11:22:13 PM »

Pi

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Re: The Sigma 18-35mm f/1.8 DC HSM Lens is Very Sharp
« Reply #22 on: July 23, 2013, 11:33:13 PM »
So does this mean I should sell my Sigma 35/1.4 and get the 18-35 1.8?

I have seen examples of horrific bokeh from the new Sigma zoom. The Sigma 35 is far from being a bokeh champion, either, but the zoom seems to be worse. I would wait to see more real world samples.

Any examples of this horrific bokeh you can point us to?

It was on dpreview, when the lens was announced. Then most of them disappeared, together with the comments. The same thing happened with the Sigma 35.

adhocphotographer

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Re: The Sigma 18-35mm f/1.8 DC HSM Lens is Very Sharp
« Reply #23 on: July 24, 2013, 12:27:55 AM »
I won't get this lens, but anything that ups the competition and forces Canon to up their game (or at least speed up their release schedule) is good! :)

Sold my 17-55 just in time it would appear (assuming DxO aren't to far off the mark).

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CarlMillerPhoto

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Re: The Sigma 18-35mm f/1.8 DC HSM Lens is Very Sharp
« Reply #24 on: July 24, 2013, 01:36:38 AM »
Seems like Sigma is in it to win it.

Sigma: PLEASE make a 24mm 1.4 and update your 50mm 1/4. I will THROW my money at you.
My photography equipment goes here, apparently.

Fandongo

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Re: The Sigma 18-35mm f/1.8 DC HSM Lens is Very Sharp
« Reply #25 on: July 24, 2013, 02:24:09 AM »
Seems like Sigma is in it to win it.

They've got a team of four...
Ninja turtles that you've gotta adore.
Sigma....Sigma....RAP.
Let's root for free trade this 'round fellas.
That said I still have faith for the 5D Mk IV...
If they give it what it deserves.

Some of us don't want to see the whole world go m4/3 immediately.
Everything has its purpose.
Which tracks focus better on the 70D?
I hope it's Canon L's...(?).
And not just arbitrarily.
But Sigma always seems beyond exceptional for the price-point.
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HarryWintergreen

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Re: The Sigma 18-35mm f/1.8 DC HSM Lens is Very Sharp
« Reply #26 on: July 24, 2013, 04:49:39 AM »
To me it seems Sigma is aware of the resurgence of street photography. Canon is rather ignorant in this respect.

dilbert

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Re: The Sigma 18-35mm f/1.8 DC HSM Lens is Very Sharp
« Reply #27 on: July 24, 2013, 06:50:41 AM »
...
    What is interesting is their sharpness score for various body:
1) 7D: 13P-Mpix
2) 700D: 15P-Mpix
3) 100D: 14P-Mpix

    All 3 are supposed to have the same 18MP sensor... different due to AA filter or it's just a variation between the same sensors or may be due to different image processing done internally by the DIGIC processor?

it is hard to imagine this being a result of DIGIC unless DxO are using JPEGs and I would find that hard to believe. Thus the only option left on the table is the AA filter.

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Re: The Sigma 18-35mm f/1.8 DC HSM Lens is Very Sharp
« Reply #27 on: July 24, 2013, 06:50:41 AM »

insanitybeard

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Re: The Sigma 18-35mm f/1.8 DC HSM Lens is Very Sharp
« Reply #28 on: July 24, 2013, 08:08:54 AM »
I thought we are not supposed to trust DxO considering they are in the pocket of everyone-not-canon.

Seriously, this is a SWEET lens, perfectly suited for 7D..

Not as good as it will be on a D7100 though......   ;)

please note <sarcasm> tags
« Last Edit: July 24, 2013, 08:13:46 AM by insanitybeard »
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Pi

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Re: The Sigma 18-35mm f/1.8 DC HSM Lens is Very Sharp
« Reply #29 on: July 24, 2013, 11:21:35 AM »
I thought we are not supposed to trust DxO considering they are in the pocket of everyone-not-canon.

Seriously, this is a SWEET lens, perfectly suited for 7D..

Not as good as it will be on a D7100 though......   ;)

please note <sarcasm> tags

It is likely to be too sharp for the D7100 (no AA filter).

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Re: The Sigma 18-35mm f/1.8 DC HSM Lens is Very Sharp
« Reply #29 on: July 24, 2013, 11:21:35 AM »