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02-16-2016, 09:51 AM   #1
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Should I sell my Sigma 24mm f2.8 superwideii?

I bought this mainly to use for landscapes but I've noticed my old DA 16-45 is sharper at 24 mm than the sigma. For the $$$ I can't seem to find a better landscape lens than the old DA 16-45.

02-16-2016, 09:53 AM   #2
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Consider that the Sigma is a stop faster. If that can compensate for the relative lack of sharpness, you may want to think about keeping it.
02-16-2016, 09:54 AM   #3
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QuoteOriginally posted by robert Quote
is sharper at 24 mm than the sigma
I think you've answered your own question. If you see that the 16-45 is sharper than the Sigma; if it was me, I'd sell.
02-16-2016, 10:06 AM   #4
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It's faster and easier to carry than the 16-45 but maybe someone else wants it more then you do.

02-16-2016, 10:36 AM   #5
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QuoteOriginally posted by robert Quote
I've noticed my old DA 16-45 is sharper at 24 mm than the sigma.
the sigma might be decentered, or if you are using af to shoot landscapes(good grief!), the sigma might need some micro af adjustment.

but a good sigma 24mm superwide II should be sharper than the da.

got any full-size unedited pics showing the problem?
02-16-2016, 10:39 AM   #6
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The Sigma can focus much closer. If only for landscape though that probably doesn't matter. Mine is extremely sharp, btw, although does show lateral CA (red/yellow) at the edges. But lightroom corrects that admirably...
02-16-2016, 10:43 AM   #7
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QuoteOriginally posted by osv Quote
the sigma might be decentered, or if you are using af to shoot landscapes(good grief!), the sigma might need some micro af adjustment.

but a good sigma 24mm superwide II should be sharper than the da.

got any full-size unedited pics showing the problem?
The superwide II is manual focus. I thought the Sigma wasn't as sharp
and the reviews here All Tests / Reviews confirm my suspicion.
02-16-2016, 11:35 AM   #8
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The DA is a pretty amazing optic in the 21-28 range, and it isn't surprising that it would match or outperform a third-party prime lens - especially when coatings are taken into account. While I certainly enjoy my smc 21 Ltd. for its feel, compactness and controlled distortion (which looks far more natural than when corrected for rectilinear), I also recognize that the DA is slightly sharper and has more pleasing bokeh at 21mm. It would be great if they re-released the lens in WR with better build.

02-16-2016, 11:37 AM   #9
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I have sold mine. Not satisfied, sorry.
02-16-2016, 11:49 AM   #10
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I also thoght the Superwide II was supposed to be one of the sharpest lenses available at that focal length. I was really planning on finding an AF version when I had a bit of money for one (and a filter for protection, and a screw-on hood) but this thread has me wondering if I should look elsewhere for my 24mm prime solution...
02-16-2016, 12:00 PM   #11
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I think the DA 16-45 isn't "magic" or extremely awe inspiring but it's very solid as far as sharpness, colors and clarity, and a very solid all purpose lens. It has basically killed my GAS for old manual wide angle lenses (at least for the moment )

Bonus: from 22mm (or 23mm) on, the DA 16-45 covers the full frame. So it's actually a pretty nice full frame 24-45mm lens, making me laugh at all those old smc 24-50mm selling on Ebay for more than what I paid for my 16-45.
02-16-2016, 02:33 PM   #12
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QuoteOriginally posted by robert Quote
The superwide II is manual focus. I thought the Sigma wasn't as sharp
and the reviews here All Tests / Reviews confirm my suspicion.
not really.

center: 2182 vs. 2161
edge: 2029 vs. 1914

at the maximum landscape aperture of f/8 on crop, those measurements are probably within the margin of error of each other, copy variation will make a much bigger difference.

the zoom has less distortion, but more vignetting, and a serious ca problem: "So far it looked good but the 16-45mm f/4 has also a dark soul - lateral chromatic aberrations (color shadows at harsh contrast transitions). At 16mm and 24mm CAs can be quite extreme with an average pixel width around 2.5px at the image borders. This is plain bad..." Pentax SMC-DA 16-45mm f/4 ED AL - Review / Test Report - Analysis

the da16-45 is designed for crop, not something you want if ff is in your future.

again... need to see full-size OOC jpegs showing the differences you are seeing, i've owned at least five of the superwide II lenses, a couple of 'em had slight decentering issues.
02-16-2016, 02:54 PM   #13
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They might be similar on sharpness (the DA 16-45 might be just a hair sharper) but the difference in contrast (in the Pentax lens favor) might make it just look sharper.

Also - as I pointed above, the 16-45 covers the full frame at 24mm. In the pictures I've seen only the extreme edges are soft.
02-16-2016, 05:28 PM   #14
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If you don't like it - then sell it. Lenses don't get any better with time.
02-16-2016, 05:49 PM   #15
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QuoteOriginally posted by osv Quote
not really.

center: 2182 vs. 2161
edge: 2029 vs. 1914

at the maximum landscape aperture of f/8 on crop, those measurements are probably within the margin of error of each other, copy variation will make a much bigger difference.

the zoom has less distortion, but more vignetting, and a serious ca problem: "So far it looked good but the 16-45mm f/4 has also a dark soul - lateral chromatic aberrations (color shadows at harsh contrast transitions). At 16mm and 24mm CAs can be quite extreme with an average pixel width around 2.5px at the image borders. This is plain bad..." Pentax SMC-DA 16-45mm f/4 ED AL - Review / Test Report - Analysis

the da16-45 is designed for crop, not something you want if ff is in your future.

again... need to see full-size OOC jpegs showing the differences you are seeing, i've owned at least five of the superwide II lenses, a couple of 'em had slight decentering issues.
Pretty much all lenses are going to be decent at f/8 in the center, but the zoom is already pretty strong at the edges, and the Sigma leaves something to be desired. When not used for landscape, the wider apertures need to be considered.

At f/4 (wide open on the zoom, stopped down a stop on the Sigma), we have the zoom pretty far ahead - 2296 vs. 2063 in the center, 1959 vs. 1799 at the edge. The zoom sharpness actually peaks by f/5.6 at 24mm - which is unusual for a consumer zoom....

The CA is a concern, but easily addressed in raw conversion - particularly so because it is the yellow-blue variety.

Many of newer Sigma lenses are very good, but the 24mm from the late '80s doesn't seem to rate all that well. It might "work" on FF digital, but I doubt the edges will be adequate for landscape at any aperture.
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