05.15.2013
Justin Wojtczak of 375 Photography has been shooting tons of images with an assortment of Sigma lenses over the past few months and put together this great highlight reel on Vimeo showcasing his great images made with Sigma gear.
We asked him to give some background and tips into how he made each shot so you can take his advice and apply it to your own upcoming shoots.
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05.08.2013
I never imagined that choosing the “right” ISO for wildlife photography would be the most controversial subject that I would teach. If you ask many pros about which ISO you should use, the most frequent response you will get is: “Choose an ISO based on what you are shooting”. If you are shooting a portrait of a bird or animal, choose a low ISO and when shooting action, select a higher ISO. My philosophy is to start out with the highest ISO your camera can handle and shoot with it from the start no matter what subject you are shooting. Why? It is one less control you need to think about while you are photographing. You can focus all of your attention on the action to help maximize your opportunities when they arise. Notice I didn’t say to use auto ISO either. While it may work in certain situations it can also make unwanted choices and ruin an image. My philosophy follows the Boy Scout principle of “being prepared” and I will show you real world situations where following the high ISO philosophy works all the time!

© Roman Kurywczak | Sigma 300-800 f/5.6 @731mm | Shutter Speed: 1/2500 sec | Aperture: f/7.1 | ISO 1250
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05.03.2013
This week’s Fan Photo of the Week was made by Brian Drourr in Vermont with the Sigma 10-20mm F4-5.6 lens.

260 source shots were stacked for this powerful nightscape. © Brian Drourr.
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05.01.2013
The Sigma USB Dock paired with Sigma Optimization Pro software brings lens customization to an entirely new level. Photographers can now personally update the firmware of Sigma’s new Global Vision lenses and make performance enhancements including multi-zone microfocus adjustments of +/-20 from the factory default settings.

Sigma Global Vision lenses can be customized through the USB Dock and Sigma Optimization Pro software. As you can see, we’ve customized several lenses so far!
These adjustments are possible for every DC and DG lens in the Art, Sports, and Contemporary lines. The Sports line of lenses, represented currently by the new 120-300mm F2.8 DG OS HSM | S lens, allows for even more performance enhancing tweaks to be applied–autofocus speed, focus limiter, and Optical Stabilizer performance.
Click “Play” to watch a screencast demonstration of Sigma Optimization Pro in action!
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05.01.2013
By Jack Howard
Tags:
30mm F1.4, fast lens, flowers, Infrared, landscape, portraiture, prime lens, sigma global vision, Sigma SD1, Sigma SD1 Merrill, standard lens
The Sigma 30mm F1.4 DC HSM | Art lens replaces the very popular 30mm EX DC HSM lens as the fast, standard prime designed exclusively for DLSRs with APS-C sensors including the Sigma SD1 Merrill, the Canon EOS Rebels, 60D and 7D and a number of Nikon models including the D7100, D90, and D5100. And based on the updates and upgrades, the 30mm F1.4 Art lens is going to make a lot of photographers very happy.

The shallow depth of field at F1.8 draws your eyes right to the hands and starfish. The Sigma 30mm F1.4 DG HSM | Art lens is a super-sharp standard prime for APS-C cameras. 1/3200 F1.8 ISO 100 on the Canon Rebel T3i.
As an Art lens the 30mm F1.4 DC HSM | A is built to the same design and performance standards introduced with the 35mm F1.4 DG HSM | Art lens, the first lens in this line to be announced. In fact, this lens feels like a scaled-down version of that fast, full-frame prime lens. And it’s not simply a cosmetic change. The new 30mm F1.4 has a completely new optical design, with more lens elements, including a double-aspheric lens which minimizes spherical distortion. (You can read the full tech specs of the lens on the special Sigma Global Vision site.) As far as focusing goes, there’s been a lot of advancements since the original 30mm F1.4 was released in 2005. The autofocus is much faster, and much more quiet. And the full-time manual focus ring is very responsive for complete creative control. And as a Global Vision lens, each and every 30mm F1.4 DC HSM | Art lens is individually tested on the A1 MTF device at the Aizu, Japan factory.
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04.30.2013
One of the benefits for outdoor sports shooters on APS-C sensors is the gain in reach with telephotos lenses. The negative of course is that now your wide angle 16mm is now not so wide at 25.6mm. Thankfully Sigma has a great wide-angle lens perfect for crop sensor shooters…the 10-20mm f3.5! I picked up this lens about a year ago and have shot outdoor sports and adventure travel with it extensively.

©2013 Liam Doran | Sharp, light, fast and tough…the 10-20f3.5 makes it in the pack for multiday expeditions. Focal length: 10mm | Shutter speed: 1/800 sec | Aperture: F6.3 | ISO: 200
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04.24.2013
Recently I traveled to Chena Hot Springs, a beautiful, well-appointed, and environmentally responsible resort located about 50 miles east of Fairbanks, Alaska. While you would expect to find ice sculptures mid-winter in the 49th state, at Chena Hot Springs Resort’s Aurora Ice Museum you can find exquisite frozen artwork year-round.

Two knights joust in this ice sculpture by world champion ice carvers Steve and Heather Brice. These life-size figures are featured in the Aurora Ice Museum at Chena Hot Springs Resort, Chena Hot Springs, Alaska. Seven exposures processed in Sigma Photo Pro and then combined into on HDR image in Photomatix Pro. Sigma SD1 camera, Sigma 10-20mm f/4-5.6 EX DC HSM lens (10mm), Gitzo GT2541EX tripod and ball head. Shutter speed: 1/15s to 4s | Aperture: f/11 | ISO 100. © 2013 David FitzSimmons. All rights reserved.
The Aurora Ice Museum is the world’s largest year-round, man-made ice environment in the world. Inside are sculptures made by six-time world champion ice carver Heather Brice and her husband, Steve, a fifteen-time world champion ice carver.
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04.19.2013
We’ve just announced the world’s first F1.8 constant aperture zoom lens, the Sigma 18-35mm F1.8 DC HSM | Art lens, and I’ll readily admit, we on the Sigma Corporation of America team have been just as excited about this lens leading up to launch as photographers have been since it was officially announced in the wee hours of April 18th.

The world’s first constant aperture F1.8 zoom lens.
And now that I’ve spent some time with my hands on a preproduction version of the lens paired with my Sigma SD1, I truly cannot wait ’til this lens starts shipping and I can share high-resolution end result photos! Today we’re going to focus on what we can talk about–the hand feel, build quality, and such, of this brand new lens designed specifically for APS-C DSLRs.
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04.17.2013

© 2013 Matt Armendariz | Camera: SD1 Merrill | Lens: 17-70mm F2.8-4 DC Macro OS HSM Contemporary | Focal Length: 42mm | Shutter Speed: 1.6 sec | Aperture: f8.0 | ISO: 100. The SD1 performs amazingly well in this situation. Detail, clarity, color fidelity, it’s all there.
I like to think of it as a happy serendipitous moment that brought me to the Sigma team, specifically the SD1 Merrill. As a studio photographer who specializes in food, I jumped at the chance to spend time with the Merrill and see how I could use it in my studio. Up until I had it in my hands, I had read quite a bit about the camera itself, and began to wonder how different using the Foveon sensor would be in my work.
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