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Nikon D800E

36 megapixels in a compact full-frame DSLR..

Tamron SP 15-30mm f/2.8 Di VC USD

Tamron’s ultra wide to medium fast zoom..

Sigma 12-24mm f/4 DG HSM Art

Fast constant-aperture ultrawide zoom..

Sigma 24-35mm f/2 DG HSM Art

Mid-range optimized groundbreaking f/2 zoom..

Sigma 20mm f/1.4 DG HSM Art

The fastest extreme wide angle yet..

Sigma 50mm f/1.4 DG HSM Art

Sigma’s fast high performance normal lens..

Sigma 105mm f/1.4 DG HSM Art

Extraordinary optical efforts for class-leading performance?.

Nikon AF-S Nikkor 58mm f/1.4G

Nikon’s High performance normal lens.

Nikon AF-S Nikkor 24-70mm f/2.8E ED VR

Versatile image-stabilized mid-range zoom..

Nikon AF-S 35mm f/1.4G

State of the art design in a fast 35mm lens..

Nikon AF-S 35mm f/1.8G

Relatively inexpensive alternative to the pro 35/1.4G..

Nikon AF-S 85mm f/1.4G

State of the art design in a fast 85mm lens..

Nikon AF-S 14-24mm f/2.8G ED

Nikon’s ultra wide angle zoom and the Nikon 14mm f/2.8, critical focus shift behavior..

Nikon Z7 Overview, Setup, General

Setup, IBIS performance, focusing..

Nikon Z7 IBIS and Focusing

Setup, IBIS performance, focusing..

Nikon NIKKOR Z 20mm f/1.8 S

Fast ultra wide angle for Nikon Z..

Nikon NIKKOR Z 14-30mm f/4 S

Ultra wide compact zoom for Nikon Z cameras..

Nikon NIKKOR Z 24-70mm f/4 S

Mid-range zoom expressly designed for Nikon Z cameras..

Nikon NIKKOR Z 35mm f/1.8 S

Moderate wide angle expressly designed for Nikon Z cameras..

Sony FE 85mm f/1.4 GM

Top-grade medium telephoto..

Sigma 14-24mm f/2.8 DG DN Art

Native-mount ultra wide angle high performance zoom for mirrorless..

Sigma FE 85mm f/1.4 DG DN Art

Ultra high performance medium telephoto..

Sony FE 12-24mm f/2.8 GM

Fast extreme wide angle zoom..

Sony FE 12-24mm f/4 G

Extreme wide angle zoom..

Sony FE PZ 28-135mm f/4G OSS

Wide mid-range zoom targeted at video shooters..

Sony Cybershot DSC-RX1 / RX1R

Full frame camera in an ultra-compact body with or without anti-aliasing filter..

Olympus M.ZUIKO DIGITAL 60mm f/2.8 ED Macro

Native Micro Four Thirds macro lens..

Olympus OM-D E-M5

Superb ergonomic design in a compact camera..

Zeiss Loxia 21mm f/2.8 Distagon

Outstanding ultra wide angle performer..


Blog posts, reverse chronological

2020

2020-10-23 Compared @ 14mm: Swing and Tilt, Optical Decentering — two Sony FE 12-24mm f/2.8 GM and Sigma FE 14-24mm f/2.8 DG DN Art

2020-10-18 Swing and Tilt: Subject Distance vs Lens Focusing Offset

2020-10-18 Analyzing Swing and Tilt of Sony A7R IV with Two Samples of Sony FE 12-24mm f/2.8 GM

2018

2018-10-09 Nikon Z7: Image Sharpness vs Zone of Focus, Autofocus Error and Mitigation

2015

2015-07-16 Left/Right Zone of Focus Skew: Not Always the Lens, the Sensor and Lens Mount Might not be Plane-Parallel

B&H Photo Black Friday Deals

Photo, video, television, far more!.
OWC Black Friday Deals

Upgrades, sound, iPad/iPhone, computing, storage, more!

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