Peter K. Burian

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Sigma AF 70-300mm f4-5.6 DL Macro
Peter K. Burian  |  Jan 01, 1998

Although many of Sigma's new lenses incorporate the latest technology and/or premium grade optics, this manufacturer continues to compete aggressively in the market for affordable zoom lenses. In addition to its APO, Aspherical, and HSM series, Sigma...

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Sigma AF APO 500mm f4.5 EX HSM
A Super Tele For A Wide Range Of SLRs
Peter K. Burian  |  Aug 01, 2002

Ask any group of professional sports or wildlife photographers to name their favorite lens, and most will mention a "fast" 500mm f/4 model with internal focusing and low dispersion glass elements. Ideal in many respects, such lenses offer several advantages.

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Sigma AF APO Macro 180mm f3.5 EX IF
Peter K. Burian  |  Jun 01, 2001

Although 50-105mm focal length macro lenses are by far the most popular, many advanced nature photographers prefer longer lenses. Consequently, many camera manufacturers make a premium grade 180mm or 200mm macro lens. Now Sigma offers one, too...

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Sigma SD10 Digital Camera
New Full Color Foveon X3 Pro Sensor In A Full Featured SLR
Peter K. Burian  |  Apr 01, 2004

Best known for its vast line of lenses with sophisticated technology, Sigma also manufactures 35mm and digital SLR cameras. Their latest digital SLR, the SD10, is an improved version of the earlier SD9 employing an enhanced Foveon X3 sensor detailed in the...

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Sigma Wide Angle Zoom
AF 15 to 30mm f3.5 to 4.5 EX DG Aspherical And AF 20 to 40mm f2.8 EX DG Aspherical
Peter K. Burian  |  Apr 01, 2002

The Sigma engineers never seem to take a break, coming up with new lenses with surprising frequency. Late last year, they released two short zooms that certainly attracted a lot of attention. Their AF 15-30mm f/3.5-4.5 EX DG Aspherical boasts the...

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Sigma's 80-400mm f/4.5-5.6 EX OS APO
First Independent-Brand Lens With Optical Image Stabilizer
Peter K. Burian  |  Nov 01, 2004

All Photos © 2004 Peter K. Burian, All Rights Reserved

Until recently, only Canon and Nikon offered interchangeable lenses with a camera shake compensating system called Image Stabilizer (IS) and Vibration Reduction (VR), respectively (see the discussion on IS and VR lens technology in our August 2004 issue, or on our website at: www.shutterbug.com).

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Lens NewsLens Reviews
Sigma’s 18-200mm f/3.5-6.3 DC OS Lens; The First Multipurpose Sigma Zoom With A Built-In Image Stabilizer
Peter K. Burian  |  Dec 01, 2007

Although Sigma released their first lens with a built-in Optical Stabilizer (OS) system in the spring of 2004, the company employed this technology in only one pro-grade lens, the 80-400mm f/4.5-5.6. That has changed with the introduction of a more compact/affordable (digital-only) 18-200mm OS zoom. Sigma will not comment about future plans, but a reliable source indicates that...

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Lens NewsLens Reviews
Sigma’s APO 50-150mm f/2.8 EX DC HSM & 70mm f/2.8 EX DG Macro; A “Constant Aperture” Zoom And A Multi-Platform Close-Up Lens
Peter K. Burian  |  Aug 01, 2007

Because most consumers demand very compact, lightweight equipment, the majority of lenses are designed with a relatively small aperture: f/4 to f/5.6, for example. That makes sense because the same focal length with a wide aperture would be larger, heavier, and more expensive due to the oversized optical elements and barrel. Even so, many photo enthusiasts really appreciate an...

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Lens NewsLens Reviews
Sigma’s APO 70-200mm f/2.8 EX DG Macro HSM; Pro-Caliber Zoom With Close-Focusing Ability
Peter K. Burian  |  Nov 01, 2006

One of the favorite lenses among news photographers, a 70-200mm f/2.8 or 80-200mm f/2.8 zoom also appeals to many serious photo enthusiasts. Although large and heavy, lenses of this type offer several benefits. Their very wide maximum aperture allows for faster shutter speeds than the more typical f/4.5-5.6 zooms, great for low-light or action photography at lower ISOs (film or...

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Compact Camera NewsCompact Camera ReviewsNews
Sigma’s DP1 Digital Camera; Foveon Sensor & 14 Million Photodetectors In A “Compact” Digicam
Peter K. Burian  |  Oct 01, 2008

First announced as a "product under development" in September 2006, the DP1 finally became available 18 months later and it was worth the wait. Aside from solving some image quality issues, the engineers also modified the specifications, delivering a better camera than we had initially expected. In spite of the compact size, this is not a typical point-and-shoot...

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