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Old 03-20-2013, 08:08 PM   #16
wbeem
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Quote:
Originally Posted by havoc315 View Post
Apples to apples, as the question was the Sigma zoom lens...

So the absolute highest rated zoom lens is a total score of 23, with a sharpness rating of 12p -- but that's only when you put it on a fullframe body. If you put that same lens on the Nikon D7000 -- you get a total score of 14, with a sharpness of 6p.
On the other hand, the Sigma lens, on the Nikon D7000 -- scores 15, with a sharpness of 9p.

So at least according to DXOMark.... the Sigma matches or exceeds the top Nikkor zoom lenses.. or am I misinterpreting it?
I'm not entirely sure what you're interpreting, because you seem to change the criteria with every new post.

In any case, you can have some fun on this site seeing how the numbers stack up with your lens and camera combination. That said, the numbers aren't the picture. The Nikon 85mm f/1.4D doesn't score as well as the newer version that I posted first, but there are photographers who swear by it for portraits. Some have even returned the new version to get the old one because they like the way the older one renders the skin.

It's all subjective when you look at the photo. You get a sharper lens and maybe you get a less desirable portrait. Some folks think that way and who am I to say they're wrong?

Before I buy a new lens, I like to visit http://flickriver.com/lenses to see examples shot with the lens in question.
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Old 03-21-2013, 07:33 AM   #17
havoc315
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Originally Posted by wbeem View Post
I'm not entirely sure what you're interpreting, because you seem to change the criteria with every new post.

In any case, you can have some fun on this site seeing how the numbers stack up with your lens and camera combination. That said, the numbers aren't the picture. The Nikon 85mm f/1.4D doesn't score as well as the newer version that I posted first, but there are photographers who swear by it for portraits. Some have even returned the new version to get the old one because they like the way the older one renders the skin.

It's all subjective when you look at the photo. You get a sharper lens and maybe you get a less desirable portrait. Some folks think that way and who am I to say they're wrong?

Before I buy a new lens, I like to visit http://flickriver.com/lenses to see examples shot with the lens in question.
Not changing criteria, but asking different questions. I'm noticing the dxomark scores seem to say more about the camera than the lens. The 85mm prime that you own with the high score, check what happens to the score if you mount it on the d7000---the score is now only slightly better than the sigma. So considering the price difference and that it is a zoom, it suddenly starts to look pretty good.


It appears, that when mounted to a crop body, Dxo doesn't rate any lens very highly.
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Old 03-21-2013, 09:09 AM   #18
wbeem
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Quote:
Originally Posted by havoc315 View Post
Not changing criteria, but asking different questions. I'm noticing the dxomark scores seem to say more about the camera than the lens. The 85mm prime that you own with the high score, check what happens to the score if you mount it on the d7000---the score is now only slightly better than the sigma. So considering the price difference and that it is a zoom, it suddenly starts to look pretty good.


It appears, that when mounted to a crop body, Dxo doesn't rate any lens very highly.
Yet another reason why I abandoned crop sensors for full frame. That rating was with my D800 and my 85mm f/1.4. If you want great results, you buy great stuff that works together.
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Old 03-21-2013, 09:17 AM   #19
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Don't forget, Simga has a new 17-70 f/2.8 lens with OS. It's their new "contemporary lens" line. The older 17-70 was pretty soft.

Here's a review
http://fstoppers.com/fstoppers-revie...-creative-lens
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Old 03-24-2013, 05:41 PM   #20
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The Sigma 17-50 2.8 has served me pretty well. Here are a few, handheld, sample shots from WDW when it was used with my Nikon D300





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Old 03-24-2013, 05:58 PM   #21
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Quote:
Originally Posted by sjfc99 View Post
The Sigma 17-50 2.8 has served me pretty well. Here are a few, handheld, sample shots from WDW when it was used with my Nikon D300
Thanks for sharing! I purchased the 17-70 from B&H on the hope that I will get a sharp copy. If not, I'll still have time to send it back and re-evaluate before our trip.
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