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See also: distortion, optics
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How to Test A Lens

How to verify a good sample and assess all aspects of lens performance..

Nikon AF-S 70-200mm f/2.8G ED VR II

Nikon’s bread and butter telephoto zoom.

Voigtlander 20mm f/3.5 Color-Skopar

Very compact ultra wide angle..

Canon TS-E 17/4L

Ultra wide angle tilt shift with tremendous versatility.

Canon TC III

Do Canon’s 1.4X and 2X version III tele extenders offer image quality at reasonable apertures?.

Sigma 24-35mm f/2 DG HSM Art

Mid-range optimized groundbreaking f/2 zoom..

Nikon AF-S Nikkor 20mm f/1.8G

Nikon’s fast ultra wide angle..

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

Versatile image-stabilized mid-range zoom..

Canon 24-70mm f/2.8L II and 24-70mm f/4L IS

Canon’s premium mid-range zooms..

Nikon AF-S 85mm f/1.4G

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

Nikon Ultra Wide Zooms

Comparing Nikon 16-35mm f/4 VR, 17-35mm f/2.8, 14-24mm f/2.8, 18-35mm, 24-70mm f/2.8 along with Nikon 20mm f/3.5, 24mm f/2, 28mm f/2, 35mm f/1.4 AIS, and more..

Nikon 24mm Lens Choices

Options for a 24mm lens: Nikon 14-24/2.8G, Nikon 24-70/2.8G, Nikon 24/2 AI-S, Nikon PC-E 24/3.5. Sharpness, distortion, flare, field curvature, shooting impression and ergonomics..

Milvus 15mm f/2.8

Milvus garb for the venerable 15/2.8 Distagon, with improved lens coating..

Milvus 25mm f/1.4

Highest performing 25mm from Zeiss ever..

15mm f/2.8 Distagon

Ultra high performance in an extreme wild wide angle lens..

ZF.2/ZE 21mm f/2.8 Distagon

Brilliant imaging, even wide open, but with a few quirks. (Review in progress) .

28mm f/2 Distagon

An artist’s drawing tool..

Zeiss LensSpire Articles

Articles written for Lenspire.ZEISS.com..

Understanding optics

Understanding lens performance..

Canon RF 14-35mm f/4L IS USM

Compact ultra-wide zoom..

Canon RF 15-35mm f/2.8L IS USM

Fast ultra wide zoom lens..

Nikon NIKKOR Z 14-30mm f/4 S

Ultra wide compact zoom for Nikon Z cameras..

Sony FE 14mm f/1.8 GM

Ultra high performance extreme wide angle..

Sony FE 20mm f/1.8 G

Compact ultra-wide angle lens..

Sony FE 24mm f/2.8 G

High performance, high speed..

Sigma FE 14-24mm f/2.8 DG DN Art

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

Sigma FE 35mm f/1.4 DG DN Art

Fast native-mount moderate wide angle..

Voigtlander FE 35mm f/2 APO-Lanthar Aspherical

High-grade manual focus wide-normal lens..

Sony FE 12-24mm f/2.8 GM

Fast extreme wide angle zoom..

Sony FE 20-70mm f/4 G

Wide range zoom aimed at bloggers..

Sony FE 24-70mm f/2.8 GM II

Premiere mid-range zoom for Sony full frame mirrorless.

Sony FE 24-70mm f/2.8 GM

Premiere mid-range zoom for Sony full frame mirrorless.

Sony FE 24-105mm f/4 G OSS

Wide angle to telephoto zoom with optical stabilization..

Zeiss Loxia 25mm f/2.4 Distagon

Outstanding wide angle, superb performer..

Leica Q (Typ 116)

24-megapixel fixed lens compact full-frame..

Considerations in choosing a lens.

Focal lengths, color, weight and travel considerations. (relevant, but dated/old material).

Leica 24mm f/3.8 Elmar-M ASPH

Leica’s best-performing 24mm, and with a flat field..

Leica 28mm f/2 Summicron-M ASPH (pre-2016)

Leica’s widest lens utilizing built-in frame lines..

Leica 28mm f/2.8 Elmarit-M ASPH (pre-2016)

Leica’s smallest and lightest M lens with superlative performance..



Blog posts, reverse chronological

2023

2023-05-24 New! Leica Q3 with the Same Extreme-Barrel-Distortion Lens

2021

2021-03-24 Sony FE 24mm f/2.8 G: Distortion and Distortion Correction

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