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09-17-2012, 04:50 PM - 1 Like   #1
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Sigma To Reorganize Lens Lineup.

Sigma have announced 3 categories of lenses which include a USB port and software allowing end users to make their own focus adjustments and firmware upgrades via computer.

Sigma Corporation announces reorganization of lens lineup, new products and quality control measures | sigmaphoto.com

09-17-2012, 04:57 PM   #2
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Thanks for that news link!

Contemporary - Art - Sport are the three categories. They also announced that they were releasing at least one new lens in each category.

· 17-70mm F2.8-4 DC MACRO OS HSM – This new Contemporary lens is designed for cameras with an APS-c sensor and covers a range equivalent to 25.5 to 105mm on a 35mm camera. An upgrade to its predecessor, which was released in December 2009, this general purpose lens offers a new design and a more compact build.
· 35mm F1.4 DG HSM – This Art lens provides photographers with a state-of-the-art alternative to the more conventional 50mm. This lens’ axial chromatic aberration is minimized, which renders a cool and smooth out-of-focus image. At low apertures, it can perform like a wide-angle lens; when opened up to F1.4, it will provide background bokeh and make the subject pop like a mid-range telephoto lens.
· 120-300mm F2.8 DG OS HSM – With redesigned mechanics and performance, this Sports lens is an update from its predecessor released in February 2011. This high-performance lens eases difficult shooting conditions by offering a maximum focal length of 300mm and a wide-open aperture of F2.8. This lens, like the other Sports category lenses to come, is dust and moisture resistant, and allows users to adjust the focus speed and the focus limiter via a button on the lens.
09-17-2012, 05:07 PM   #3
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17-70 - if it's sharper and similar priced to it's predecessor (which I still have), it'll be a good upgrade.

35mm - what a load of gibberish! Probably a good lens though, although I want a 28mm update

120-300 - do want!
09-17-2012, 05:23 PM - 1 Like   #4
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QuoteOriginally posted by Docrwm Quote
Contemporary - Art - Sport are the three categories.
They haven't gone far enough with this. They should add in the Bryan Peterson terminology, for example calling wide angle a "storytelling lens". Also, in tune with current anti-photography hysteria, superteles become "terrorist" (or "child molester") lenses. "Normal" of course is a category we have to lose -- too judgmental. That can become the "reality" category. Superzoom? "Diversity" lens!

09-17-2012, 05:52 PM   #5
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QuoteOriginally posted by JinDesu Quote
17-70 - if it's sharper and similar priced to it's predecessor (which I still have), it'll be a good upgrade.

35mm - what a load of gibberish! Probably a good lens though, although I want a 28mm update

120-300 - do want!
On the sharper question, if you read the entire press release they go on to talk about no QC measures and their new instrumentology in checking lenses that starts with these 3 models:

"All of these new lenses will also be subject to Sigma’s new, proprietary modulation transfer function (MTF) measuring system called “A1.” Named in honor of the company’s sole production base, the Aizu factory in Aizu, Japan, the A1 system will allow inspectors to verify previously undetectable high-frequency details in each lens before it is shipped.

“We used to measure lens performance with a MTF measuring system using conventional sensors, but this new A1 system uses our own 46-megapixel Foveon direct imaging sensors,” said Yamaki. “We view this new method of performance evaluation as being incredibly important, not only because we owe it to our customers, but because we owe it to ourselves. We’ve spent more than 50 years perfecting our design and manufacturing processes, and now we deliver a complete package by closing the loop on that commitment to quality by adopting a more stringent verification process.”
09-17-2012, 06:08 PM   #6
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QuoteOriginally posted by Docrwm Quote
On the sharper question, if you read the entire press release they go on to talk about no QC measures and their new instrumentology in checking lenses that starts with these 3 models:

"All of these new lenses will also be subject to Sigma’s new, proprietary modulation transfer function (MTF) measuring system called “A1.” Named in honor of the company’s sole production base, the Aizu factory in Aizu, Japan, the A1 system will allow inspectors to verify previously undetectable high-frequency details in each lens before it is shipped.

“We used to measure lens performance with a MTF measuring system using conventional sensors, but this new A1 system uses our own 46-megapixel Foveon direct imaging sensors,” said Yamaki. “We view this new method of performance evaluation as being incredibly important, not only because we owe it to our customers, but because we owe it to ourselves. We’ve spent more than 50 years perfecting our design and manufacturing processes, and now we deliver a complete package by closing the loop on that commitment to quality by adopting a more stringent verification process.”
It's great marketing speak (like the 35 F1.4) - but until I see it translated into real life pictures, I won't be too convinced by them. The 17-70 can perform great, but it's definitely not in the same league as the 17-50s.
09-17-2012, 06:23 PM   #7
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QuoteOriginally posted by JinDesu Quote
It's great marketing speak (like the 35 F1.4) - but until I see it translated into real life pictures, I won't be too convinced by them. ..........
Fair enough
09-17-2012, 06:28 PM   #8
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Both the 35/1.4 and new testing procedures are great news. Good job Sigma.

09-17-2012, 06:31 PM   #9
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Too bad they don't make Pentax lenses anymore!
09-17-2012, 06:37 PM   #10
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QuoteOriginally posted by vonBaloney Quote
Too bad they don't make Pentax lenses anymore!
?? Last I checked they did...in fact they recently released non-OS versions of a couple lenses.
09-17-2012, 06:40 PM   #11
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Really? Seems like all the newer releases are not in Pentax mount. 180mm macro, etc...
09-17-2012, 07:58 PM   #12
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QuoteOriginally posted by JinDesu Quote
17-70 - if it's sharper and similar priced to it's predecessor (which I still have), it'll be a good upgrade.

35mm - what a load of gibberish! Probably a good lens though, although I want a 28mm update

120-300 - do want!
Yes that 120-300 has my name on it. I might sell the 70-200 VRII if it';s a great lens. I have been trying to find a decent 300mm Nikon that I can afford with VR.. a hard task indeed.
09-17-2012, 08:21 PM   #13
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I wish Sigma was less liberal with the word "macro". The new 17-70mm F2.8-4 DC MACRO OS HSM listed in the press release tops out at 1:2.9 magnification. Even worse, searching for current Pentax APS-C macros at Lens Finder - SigmaPhoto.com find a lens that is 1:7.4 maximum magnification.
09-17-2012, 08:27 PM   #14
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QuoteOriginally posted by DeadJohn Quote
I wish Sigma was less liberal with the word "macro". The new 17-70mm F2.8-4 DC MACRO OS HSM listed in the press release tops out at 1:2.9 magnification. Even worse, searching for current Pentax APS-C macros at Lens Finder - SigmaPhoto.com find a lens that is 1:7.4 maximum magnification.
Eh - I think 1:3 is close enough for Tamron and Sigma zooms. Anything less, I'll agree.
09-17-2012, 10:34 PM   #15
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QuoteOriginally posted by vonBaloney Quote
Really? Seems like all the newer releases are not in Pentax mount. 180mm macro, etc...
You could be right, but that would be a massive blow to the Pentax community. Losing Zeiss/Voigtlander was hard enough, but those were niche; Sigma lenses are a mainstay, especially when Pentax inflates their own lens prices.

We should know their stance soon enough once the 35 is released.
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