The Blog: See what
Sigma is saying.

02.17.2015

Tout_LensExploration-105mm   

Read More >>

02.03.2015

With deep snow covering the hills here in Ohio, I couldn’t resist taking Rowan out for a romp in the white and fluffy. Grabbing a rope toy for Rowan to retrieve, we headed out to a nearby field.

Rowan, our ‘fox red’ Labrador pup, retrieves a rope toy in the snow. In comparing two similar images here, I refer to this photo as the “level-rope” image. Canon EOS 7D. Sigma 18-300mm F3.5-6.3 DC MACRO OS HSM | C. at 90mm, f/5.6, 1/2000 sec., ISO 800. Processed in Adobe Photoshop CS5. Photo © 2014 David FitzSimmons. All rights reserved.

Rowan, our ‘fox red’ Labrador pup, retrieves a rope toy in the snow. In comparing two similar images here, I refer to this photo as the “level-rope” image. Canon EOS 7D. Sigma 18-300mm F3.5-6.3 DC MACRO OS HSM | C. at 90mm, f/5.6, 1/2000 sec., ISO 800. Processed in Adobe Photoshop CS5. Photo © 2014 David FitzSimmons. All rights reserved.

My goal was to take action photos, high speed images of Rowan racing through the snow. Rowan’s ‘fox red’ coat looks especially good in early- or late-day sun, so, I took her out to a hilltop where the last golden rays were lighting things up. Generally speaking, dog action shots require shutter speeds of at least, say, 1/1000 second. That means that strong sun, medium to wide apertures, and medium to high ISO settings are often best. 

I shot at 1/2000 to make sure I stopped the action. I changed the aperture slightly as I shot but generally kept it around f/5.6. Given the late light in the day and the high shutter speed, I set the ISO at 800.

Repeatedly tossing the colorful rope away from the sun, I zoomed in on the toy with my 70-300mm f4-5.6 lens, tracking Rowan as she ran back toward me. She looked beautiful front lit by the golden-hued sun. I took about 100 shots, of which a handful were good: eyes visible and in focus; head, ears, legs, and tail in pleasing positions; and good backgrounds. 

Read More >>

02.02.2015

A high quality circular polarizer is still one of the most important accessories for any photographer’s bag. And the new Sigma Weather-Resistant Circular Polarizers offer incredible performance, weather-tough design, and a fantastically upgraded case with grip arcs that keep the filters from rattling around in the bag.

wr-cpl-58mm_01

The advances in digital capture and advanced RAW processing have rendered many classic filter types less crucial, if not outright obselete; the look and feel of warming filters, and graduated density filters, for example, are easily and quickly replicated—and in many cases bested—by what is now available during RAW processing and image toning.

An afternoon sunshower created a lot of glare on the surface of the pedestrian mall in Somerville, NJ. Adding a circular polarizer (right), and adjusting the angle helped to tame the harsh surface glare.  1/320 F9 ISO 320, Canon Rebel T3i and Sigma 17-70mm F2.8-4.0 Contemporary with Sigma 72mm Weather Resistant Circular Polarizer added for right image. Exposures balanced in Adobe Camera RAW from CR2 files.

An afternoon sunshower created a lot of glare on the surface of the pedestrian mall in Somerville, NJ. Adding a circular polarizer (right), and adjusting the angle helped to tame the harsh surface glare. 1/320 F9 ISO 320, Canon Rebel T3i and Sigma 17-70mm F2.8-4.0 Contemporary with Sigma 72mm Weather Resistant Circular Polarizer added for right image. Exposures balanced in Adobe Camera RAW from CR2 files.

But the same can not be said of circular polarizers, which limit and constrict the angles of light reaching the image sensor. This filter can minimize unwanted reflections on shiny surfaces, make skies more rich in color and give clouds greater presence, and in general make many images in many different situations pop from the screen or page in more dramatic fashion.  And of course, the better the image quality of the RAW file to start with, the better the tonal adjustments made during toning and processing will be. This is why circular polarizers still matter.

Read More >>