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Tag: fisheye
12.08.2014

A Night at the Very Large Array

Image copyright Roman Kurywczak Canon 1D Mark 3 body with the Sigma 12-24mm f/4.5-5.6 at 12mm for 30 seconds at f/5 and ISO 6400 mounted on Induro CT 304 tripod with BHL3 head.  Painted with flashlight for approximately 15 seconds.

As a Sigma Pro team member I had the privilege of being invited to give lectures and workshops at the 2014 Festival of Cranes out at the Bosque del Apache National Wildlife Refuge. I have visited the refuge many times before, and, while I was excited about being able to photograph the birds again, I was most excited about my two nighttime lectures and workshops at the Very Large Array (VLA). These giant radio telescopes would make a great foreground subject for a star filled sky. Nobody has been allowed on the property at night since 2009, so I was very excited about taking a group out to the location. Sigma Photo would sponsor the event, and I agreed with the organizers of the festival to take out 40 participants each night. With a group that size, I knew I wouldn’t get much of a chance to take pictures myself, but it would be a great learning opportunity for the class. The image at top is one of the few I was able to take during a break in the instruction.

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09.19.2014

Lens Explorations: 15mm F2.8 EX DG Diagonal Fisheye Lens

Tout_LensExploration-15mm

Sometimes a camera wants to see differently. That happens to me I get inspired to go wide… really wide. I’m […]

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09.02.2014

Somewhat Secret Superpowers of Camera lenses

Everyone knows supertelephoto zoom lenses are great for long-reach photography at widest, like wild birds. Here, the Sigma 150-500mm is trained on an American Anhinga, at 500mm, wide open at F6.3.

The greatest thing about interchangeable camera lenses is the variety of optical designs, from ultrawide to supertelephoto and everything in between, that offer an incredible amount of variety for visual expression, creativity, and optical performance optimized for different photographic situations. And while it may be sometimes completely and totally obvious what types of photography a certain lens excels at—for example, everyone knows that Macros are designed to capture close-up details; telephoto lenses are great for long-reach wildlife and sports from the sidelines—many styles of camera lenses have lesser-known secret superpowers that can be called upon to make a photo. Let’s take a look!

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01.07.2014

The Holiday 2013 Sigma Lens Size Comparison Graphic

Click the photo to view it full-screen. And Let us know which of these lenses are on your #SigmaWishlist on our social channels for a chance to win a cool swagbag between now and Dec 26th! We'll be giving away 10 across all social channels that use the hashtag #SigmaWishlist. (US Only.)

In case you were ever wondering how many of our smallest lens equal one of our biggest lenses, and how our lenses size up to a cardinal or a 16 oz cup of coffee, we present the Holiday Season 2013 Sigma Lens Comparison Chart! Here’s our entire lens lineup, to scale.

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01.03.2014

Prime Time: Focus on Fixed Focal Length Lenses

A ring of beach rocks seen through the Sigma 15mm EX DG HSM Diagonal Fisheye with the horizon line near the center of the frame.

Prime lenses are designed for exceptional imaging at a single focal length. Unlike zoom lenses that easily span a given focal range and variable field of view with a twist of the zoom ring, the field of view and focal length remains constant. If you want to take in less of the surroundings with a given prime lens, you’ve got to physically move closer, and to take in more of the scene, you’ve got to back up. But of course, as you move, the angle of view remains the same all the while.

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