Archive for the ‘Third Party Lenses’ Category

Sigma to Add Second MTF Chart for Lenses

Sigma to Add Second MTF Chart for Lenses

Sigma Corporation of America to Release Two MTF Charts for Measurement of Lenses

Company releases the data of Geometric and Diffraction MTF charts for Global Vision Lenses

RONKONKOMA, N.Y., — February 3, 2014 – Sigma Corporation of America, a leading researcher, developer, manufacturer and service provider of some of the world’s most impressive lines of lenses, cameras and flashes, today announced that the company will now release a Geometrical MTF (Modulation Transfer Function) chart in addition to a Diffraction MTF chart when measuring the performance of all new Global Vision lenses.

MTF charts are important because they help photographers better understand the optical quality of lenses. Sigma has traditionally released Diffraction MTF data because it takes the diffraction quality of light into consideration, which can dramatically affect the data outcome. Diffracted light exists at every aperture, giving photographers a more accurate measurement of how the lens will perform in real life. Although Geometric MTF data is easier to measure and calculate since it does not consider the diffraction quality of light, it tends to show higher values in the graph and less defined results.

“As a family-owned organization, we hold ourselves and the products we design to a very high standard,” said Mark Amir-Hamzeh, president of Sigma Corporation of America. “Our customer’s expect high quality products and by sharing both MTF charts for all our new lenses, we are able to help guide them in making the most informed purchase decisions based on how our lenses will perform in actual photography situations.”

As a leader in technology and innovation, Sigma Corporation is committed to showing the true value and quality standards of all Sigma Global Vision lenses. Every lens is tested with Sigma’s proprietary modulation transfer function (MTF) “A1” measuring system before being shipped from the factory in Japan. By making both MTF charts available, Sigma is providing its customers with accurate measurements of its lenses and giving photographers a chance to see the full potential of Sigma’s lenses.

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In-Depth Review: Tamron 150-600 f/5-6.3 VC

In-Depth Review: Tamron 150-600 f/5-6.3 VC

Dustin Abbott has sent us his in-depth review of Tamron’s brand new 150-600 f/5-6.3 VC super telephoto zoom lens. This lens is receiving a lot of press for it’s range and killer price of $1069 USD.

Most everyone that is reviewing lens has been giving it very good reviews. No, it’s not going to perform as well as Canon’s 200-400 f/4L IS 1.4x, but that lens costs about 10 times more!

CR’s Take
I get asked a lot about what lens to buy, and one of the most asked is what super telephoto zoom to buy. Since the announcement and reviews  of the Tamron 150-600 f/5-6.3 VC, I have had a hard time recommending Canon’s long-in-the-tooth 100-400 f/4-5.6L IS. This is a great starting point for anyone wondering if or how they’d use the super telephoto focal lengths. Some people may find they sit in the 300mm range, others may find they never leave 600mm. If you spent a year with this Tamron, you may then have a better idea as to whether or not investing in one of the big Canon L’s is the right decision for your situation and pocketbook.

I think it’s very interesting watching Sigma and Tamron release lenses that are priced extremely competitively and give wonderful bang-for-the-buck performance. Your move Canon….

Says Dustin
“I simply don’t have the budget to purchase many of the super-teles that cover this focal range, and furthermore, I don’t shoot this style of photography often enough to justify the expense even if I did.  But this lens hits a sweet spot for me.  It’s price is low enough to not only be affordable but also a small enough investment that you won’t feel like you have wasted your money if you aren’t shooting long distance every day.  So if you can’t afford a “super-tele”, how about an “ultra-tele” (that’s what Tamron is calling this lens segment)?  The preorder price in the United States is only $1069.  It is about $180 more here in Canada, but this lens represents such a tremendous value that I have had a serious conversation with a friend in the industry about how it is even possible for Tamron to make a profit at this price.  I personally wonder if they are not selling this lens at a loss to drive brand recognition.  It’s that good.”

Read the full review | Tamron 150-600 f/5-6.3 VC at B&H Photo

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Tamron 150-600 Shootout via LensRentals.com

Tamron 150-600 Shootout via LensRentals.com

Roger and Aaron over at LensRentals.com have completed their resolution testing of a host of supertelephoto zoom lenses. The Sigma 50-500 OS and Canon 100-400 were the two big competitors to the new Tamron 150-600 VC.

The Tamron is the least expensive of the bunch and held up very well against others in its class. While it’s not clearly the best resolving lens. The price, focal range & performance will be a big winner for a lot of people.

Summary from LensRentals.com
“My summary would be that the selection between a Tamron 150-600, Canon 100-400 IS, and Sigma 50-500 OS should be made on criteria other than MTF 50. There are some minor differences in resolution, but nothing that makes one clearly better than another. Price, weight, autofocus accuracy, effectiveness of vibration control, and a number of other factors (did I mention price?) are more important considerations when choosing among these lenses.

It’s pretty obvious that the Tamron has both 600mm range and the lowest price. These tests, and everything I see from photographers using the lens in the field, support that it’s of at least equal image quality. Some people will prefer the extra wide range of the Sigma, others the lighter weight of the Canon. But for a lot of people, the Tamron is going to be the best bang for the buck.”

Read the full review | Tamron 150-600 VC at B&H Photo

 thanks Steve

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Sigma 50 f/1.4 Art Lens Should be Amazing

Sigma 50 f/1.4 Art Lens Should be Amazing

Imaging-Resource sat down with Sigma at the CES show that wrapped up last week in Las Vegas to talk about the new Sigma 50mm f/1.4 Art lens they announced.

It turns out Sigma’s goal isn’t to top the Canon 50′s in performance, but to get as close as possible to the new king of resolution, the $4000 Zeiss Otus 55 f/1.4.

From Imaging-Resource
“But the most impressive information we gleaned? When discussing their goals of image quality and sharpness for the lens, Sigma mentioned they’re confident they’ll surpass competitive products from Canon and Nikon and are instead gunning for Zeiss’s new 55mm Otus lens. It’s a serious claim. The Zeiss 55mm f/1.4 Otus lens – with its $4000 price tag — is squarely aimed at high-end professional shooting such as fashion, advertising and editorial work.”

A lofty goal indeed.

Source: [IR] via [PR]

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Sigma Announces the 50 f/1.4 Art Lens & More

Sigma Announces the 50 f/1.4 Art Lens & More

LAS VEGAS– Jan. 6, 2014 – Sigma Corporation of America, a leading researcher, developer, manufacturer and service provider of some of the world’s most impressive lines of lenses, cameras and flashes, today announced the launch of two new Global Vision lenses from the 2014 Consumer Electronics Show in Las Vegas.

The improved and redesigned 18-200mm F3.5-6.3 DC Macro OS HSM and 50mm F1.4 DG HSM lenses are the latest additions to Sigma’s Global Vision lineup. Both lenses’ availability and pricing have yet to be announced.

“These two lenses are among our most popular, and we’re pleased to reintroduce these products by adding them to our Global Vision lineup,” said Mark Amir-Hamzeh, president of Sigma Corporation of America. “The 18-200mm, in particular, is an exciting new lens as it now has macro functionality, updated optics and a Global Vision design, making it a fantastic alternative to the kit lens. As has been the case with our recent Global Vision lenses, we expect an array of photographers to gravitate to their technically advanced features and slick new look.”

The 18-200mm F3.5-6.3 DC Macro OS HSM Contemporary lens, designed specifically for APS-C DSLRs, is the successor to the 18-200mm F3.5-6.3 II DC OS HSM, which was launched in 2011. The smaller and lighter lens (15.2 ounces and 2.8×3.4 inches versus 17.3 ounces and 3×3.5 inches) now macro capabilities with a minimum focusing distance of 15.4 inches and a maximum magnification ratio of 1:3, as opposed to the lens’ earlier minimum focusing distance of 17.7 inches and max magnification ratio of 1:3.8. Its minimum working distance is 14.7 inches, which makes the lens suitable for close-up shooting with natural light, keeping shadows of the camera and lens out of the image.

The 18-200mm F3.5-6.3 Macro has also been updated to incorporate Special Low Dispersion (SLD) glass elements that have a high refractive index and can correct chromatic aberration at the telephoto-end. Moreover, aspherical lens elements, including double-sided aspherical lenses, will ensure a compact size and excellent correction of distortion.

The new Sigma 50mm F1.4 DG HSM Art has been reengineered and redesigned to set a new standard of performance in the Art line. A staple focal length, the new Sigma 50mm F1.4 Art is a pro level performer for full-frame DSLRs great for many different types of photography including portraits, landscapes, studio work and still-life. It has been updated to include SLD glass and optimized for rich peripheral brightness with improved large aperture performance by positioning wide elements into the front groups. Other updates include an optimized autofocus algorithm for smoother focusing and a floating focusing system to reduce lens movement while focusing. Under the Global Vision line, it features a new matte finish, improved AF on/off switch and guarantees every lens is tested with Sigma’s proprietary modulation transfer function (MTF) “A1” measuring system before being shipped. Now with 13 elements in 8 groups compared to the previous 8 elements in 6 groups, it also has improved close focusing at 15.7 inches and a maximum magnification ratio of 1:5.6

Both lenses incorporate Sigma’s Hyper Sonic Motor (HSM) system to produce quiet, high-speed auto focus. In addition, they include Super Multi-Layer Coating to reduce flare and ghosting, and to ensure high-quality images throughout the entire zoom range. The 18-200mm F3.5-6.3 DC Macro OS HSM and 50mm F1.4 DG HSM lenses are also compatible with Sigma’s USB dock and the company’s Mount Conversion Service.

Other recently announced lenses and accessories such as the 24-105mm F4 DG OS HSM, 18-35mm F1.8 DC HSM | ART and USB Dock will be on display at Sigma’s CES booth. Visit Sigma at CES 2014 at booth 10431in Central Hall at the Las Vegas Convention Center from Jan. 7 to 10.

cr

Rumor: Sigma 16-20 f/2 DG Art [CR1]

Rumor: Sigma 16-20 f/2 DG Art [CR1]

Sigma 16-20 f/2 DG Art for full frame
A rumor has surfaced talking about the possibility of a  Sigma 16-20 f/2 DG Art series lens for full frame cameras. We had previously heard about Sigma working on a 24-70 f/2 DG Art lens for full frame cameras, but nothing else has been mentioned about it in a while.

CR’s Take
Possibility of this? I’m not sure, that’s a very short zoom range. I think something like 16-24 would be better and put real pressure on both Canon and Nikon (the Nikon 14-24 is terrific and expensive).

Source: [CW]

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Sigma 135mm f/2 DG OS Art Coming? [CR1]

Sigma 135mm f/2 DG OS Art Coming? [CR1]

More Sigma Primes
We’re told that Sigma is working on a 135 f/2 DG OS Art series prime lens for release some time in 2014. Possibly around Photokina in September.

The source goes on to say that Sigma is going to be very aggressive next year and announce a lot of high performance glass.

The same source also says that Sigma may have a surprise camera announcement. There are a few details to be worked out, but there’s a possibility of a big DSLR announcement.

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A 40mm f/0.85 for Your EOS-M?

A 40mm f/0.85 for Your EOS-M?

HANDEVISION  —  December 12, 2013
A mutual passion for photography and the art of image capture between two companies’ owner has led two special firms, Shanghai Transvision and German IB/E Optics, to collaborate on an industry-shaking new innovation. By merging Geman high-quality engineering standards with Chinese cost-effective production infrastructure, the new camera lens brand Handevision (“Han” means China in Mandarin and “De” is the word for Germany).

After many months of collaboration between engineering and production teams, final quality control assessments have concluded and the IBELUX 40mm f0.85 high-speed lens, the fastest lens in the world, is nearly ready for release. Available for sale by February, 2014, this lens will be available for Sony NEX, Fuji X, Canon EOS M and Micro 4/3 digital mirrorless camera mounts (MSRP is $2,080 USD).

While risky to start our launch with this ground-breaking high-speed lens, we hope to gain the attention and confidence of photographers around the world with our expanding new lenses. Our mission is to manufacture high-grade lenses of metallic construction with a clean, aesthetic finish. As a new player in the lens market, we believe we can expand our new brand internationally as our engineers, uninhibited by production costs nor by material restrictions, will be free to work creatively in seeking optimal image quality and artistic design.

We are currently working on our next project, the wide-angle IBEGON lens. With Sony releasing the new full-frame mirrorless A7/A7R camera, we have designed a high-speed telephoto APO mirror lens called the IBECAT, named for its sharp image capture, its lightweight construction and fast glass. Additional lenses are in development for full frame mirrorless cameras, including a tilt-shift lens and a compact fixed focal length lens.

We are focusing our efforts at expanding our line of full-frame mirrorless and DSLR detachable lenses in 2014 and are constantly developing ways to satisfy demand of professional photographers for faster, sharper lenses.

Read the full press release

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Tamron 150-600 f/5-6.3 VC Availability

Tamron 150-600 f/5-6.3 VC Availability

Tamron 150-600 f/5-6.3 VC
The Tamron 150-600 f/5-6.3 VC lens will be available in the USA on January 17, 2014. Pricing hasn’t yet been confirmed, however we have heard it would be under $1100.

Thanks Johnathon

Tamron Press Release

December 13, 2013, Commack, N.Y. - Tamron Co., Ltd. (President & CEO: Morio Ono), a leading manufacturer of precision optics, has announced the release of an innovative ultra-telephoto zoom lens with a focal length range of 150mm to 600mm for full-frame and APS-C format DSLR cameras. The SP 150-600mm Di VC USD lens will be available in the USA on January 17, 2014.

Tamron’s current 200-500mm (Model A08) is a popular, compact, easy-to-use ultra-telephoto zoom lens, but customers have shown great interest in having a lens that provides an even greater focal length range

This all-new ultra-telephoto zoom lens features VC (Vibration Compensation) image stabilization, speedy, precise USD (Ultrasonic Silent Drive)(3), state-of-the-art eBAND (Extended Bandwidth & Angular-Dependency) Coating, which significantly reduces the unwanted light reflections that cause flare and ghosting, and a sophisticated and stylish new external finish.

Its 4x ultra-telephoto zoom capabilities, with a focal length range from 150mm to 600mm, enhance the creative potential of telephoto photography, a captivating feature for all photographers, particularly nature, wildlife, and sports shooters.

Product Highlights

  • 4x ultra-telephoto zoom lens with a focal length range of 150mm to 600mm 
    The focal length range of this lens was extended by 50mm on the wide-angle side and 100mm on the telephoto side compared to the existing model A08, making it possible to take even more striking photographs of birds, wildlife, sports, and other distant subjects. Mounted on APS-C DSLR cameras, it has a stunning near1000mm telephoto equivalent focal length range of 233mm to 930mm.
  • World class image quality
    Employing 20 elements in 13 groups and boasting an advanced optical design, the lens delivers a superior balance of resolution and contrast for sharp, clear images. The front group contains three LD (Low Dispersion) glass elements (two in the first group, one in the third) for enhanced optical correction effectiveness, enabling the lens to thoroughly compensate for on-axis aberrations at the telephoto end. The lens also adopts eBAND Coating, developed from state-of-the-art coating technologies, and conventional BBAR (Broad-Band Anti-Reflection) Coating to greatly suppress ghosting and flare even when shooting under adverse lighting conditions.
  • Achieves a 600mm focal length in a compact easy-to-handle package
    Ingenious optical design features minimize the movement of lens groups within the lens when zooming. This reduces the amount of barrel extension needed to cover the complete focusing range, making the entire lens more compact.
  • Beautiful background blur effects 
    Adopting a 9 blade circular diaphragm enables users to create beautiful background blur effects (Bokeh), which provide even greater potential for creative expression. This circular diaphragm retains a nearly circular shape even at two stops down from its maximum aperture.
  • VC (Vibration Compensation) mechanism creates greater opportunities for sharper handheld photography
    Tamron’s proprietary VC (Vibration Compensation) image stabilization system uses a three-coil system, delivering significantly sharper images and creating greater opportunities for handheld ultra-telephoto photography.
  • Comfortable autofocus
    Tamron’s new SP 150-600mm F/5-6.3 Di VC USD features a USD (Ultrasonic Silent Drive) ultrasonic motor drive for swift and accurate AF response, it delivers high torque, very fast response times, and very low noise. The full-time manual focus mechanism allows users to make fine manual focus adjustments at any time even when AF is engaged.
  • New elegant, high-class external finish
    Tamron has upgraded the cosmetic design and finish of this lens to create a more sophisticated, high-end look in keeping with the demands of discerning full-frame DSLR users. Employing a sophisticated linear pattern rubber grip on the zoom and focus rings and an attractive and stylish tungsten silver brand ring, this newly designed model accentuates its visceral presence with understated elegance and class.
  • Easy-to-use tripod mount
    The tripod mount has been completely redesigned to provide superior stability, durability, ease of use, and portability.
  • Comes with “SILKYPIX Developer Studio for Tamron”, RAW image development processing software for Tamron’s SP lenses
    The SILKYPIX Developer Studio software can develop high-quality images from RAW data, incorporating adjustments that can express the personal style and taste of the photographer. These include white balance, color, sharpness, and the tonal curves recorded by digital cameras. The SILKYPIX Developer Studio for Tamron provides a range of functions, in addition to the basic adjustment capabilities, such as correcting aberrations (chromatic aberrations of magnification, distortion, peripheral light fall-off), based on the optical data. Used in tandem with Tamron’s SP series lenses – renowned for their high-depiction capability – this advanced technology efficiently produces images that meet photographers’ most exacting demands.

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Sigma 24-105 f/4 DG OS HSM Art Lens Test Chart Samples

Sigma 24-105 f/4 DG OS HSM Art Lens Test Chart Samples

UPDATE
The Sigma 24-105 f/4 DG OS HSM is now in stock at B&H Photo for $899

Sigma 24-105 f/4 DG OS HSM $899 at B&H Photo

From The-Digital-Picture
Bryan over at TDP has posted his ISO 12233 test shots using the new Sigma 24-105 f/4 DG OS HSM Art lens.

Bryan has spent a little while with the lens and has added some images and thoughts to his review page.

ISO 12233 Sample Images | Sigma 24-105 f/4 DG OS HSM Preview 

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