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08-01-2013, 05:46 PM   #346
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QuoteOriginally posted by falconeye Quote
Sigma 24-70/2.0 is coming.
Wow!

<joke>
I'll go for the APS-C version because it is a bit faster.
</joke>

^^^ It's a joke!
I didn't want to include it, but "Wow!" wasn't long enough...

08-05-2013, 09:22 PM - 1 Like   #347
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An interview with the designer of the 35 f1.4 and 18-35 f1.8 sigma lenses, with some interesting production process pictures:

http://www.lenstip.com/136.1-article-Interview_with_constructor_of_Sigma_lenses.html
08-06-2013, 11:47 AM   #348
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Last edited by beholder3; 08-11-2013 at 07:40 AM. Reason: [deleted]
08-07-2013, 06:51 AM   #349
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QuoteOriginally posted by rawr Quote
An interview with the designer of the 35 f1.4 and 18-35 f1.8 sigma lenses, with some interesting production process pictures:

Interview with constructor of Sigma lenses - Interview with constructor of Sigma 1.4/35 and 18-35 mm f/1.8 lenses - Lenstip.com
Very good article, Thanks for sharing!

08-07-2013, 09:40 AM   #350
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Is this now a real fact that the Sigma 18-35/1.8 will be available for Pentax mount or am I just fooling myself?

JP
08-07-2013, 09:54 AM   #351
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QuoteOriginally posted by jpzk Quote
Is this now a real fact that the Sigma 18-35/1.8 will be available for Pentax mount or am I just fooling myself?

JP
They are listed as back ordered for K-mount. They are going to sell a lot of this lens.
08-07-2013, 10:37 AM   #352
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QuoteOriginally posted by Winder Quote
They are listed as back ordered for K-mount. They are going to sell a lot of this lens.
Thanks for the reply, Winder.

I asked the question simply because I am seriously considering to sell my DA*16-50 and replace it with the Sigma.
The slight loss of wide angle coverage would be easily upset with my DA 15 Ltd.

Granted, one looses the WR feature though.

Cheers.

JP
08-07-2013, 11:34 AM   #353
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...it weights 50% more than the DA* 16-50/2.8...
It is on the big and heavy side for an APS lens...

08-07-2013, 11:51 AM   #354
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It's heavy, the range is limited, but it tests excellent optically even wide-open ... and it means you can shoot at ISO 1200 instead of ISO 3200 indoors, for example. Or have more than twice the shutter speed for the same shot, your choice, as long as you have enough DOF at f/1.8 for your subject.

It's a powerful indoor zoom for aps-c, it opens up your options.
08-07-2013, 11:54 AM   #355
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QuoteOriginally posted by jsherman999 Quote
It's heavy, the range is limited, but it tests excellent optically even wide-open ... and it means you can shoot at ISO 1200 instead of ISO 3200 indoors, for example. Or have more than twice the shutter speed for the same shot, your choice.
And more than twice the chance of missing focus...

Seriously, it's just a different sort of lens than the DA*. Which doesn't mean it's not interesting, on the contrary!! But I would still prefer to up the ISO and shoot it stopped down in general low light, same as any lens.

Wim
08-07-2013, 12:08 PM   #356
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QuoteOriginally posted by Pl Jensen Quote
...it weights 50% more than the DA* 16-50/2.8...
It is on the big and heavy side for an APS lens...
I don't mind heavy lenses.

I just wonder if this would be a suitable candidate to replace the DA*16-50, minus the weather protection.

JP
08-07-2013, 12:11 PM   #357
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Why not use both? Different lenses for different purposes.
08-07-2013, 12:22 PM   #358
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QuoteOriginally posted by VoiceOfReason Quote
Why not use both? Different lenses for different purposes.
That's why they call you "Voice of Reason" ...

JP
08-07-2013, 12:22 PM   #359
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QuoteOriginally posted by jsherman999 Quote
It's a powerful indoor zoom for aps-c, it opens up your options.
It certainly is, but for me personally, this lens and the DA* 16-50/2.8 disqualifies due to severe flare problems. For some reason no one test lenses for flare although I have found it be among the most important aspect of lens quality.

[I'm very sure that this lens will be miserable in flare supression with its 17 elements in 12 groups, huge front diametre and speed of 1.8 and the fact that it is made at a cost]
08-07-2013, 12:57 PM   #360
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QuoteOriginally posted by Pl Jensen Quote
[I'm very sure that this lens will be miserable in flare supression with its 17 elements in 12 groups, huge front diametre and speed of 1.8 and the fact that it is made at a cost]
... and, most of all, it's a Sigma!
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