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Pages at other diglloyd sites:

See also 11 pages at windinmyface.com

2017-06-03 Completed: 2017 Eastern Sierra Double Century

Camera and Lens Tolerances

Sharpness issues related to camera and lens tolerances and build quality..

How to Test A Lens

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

Optical Behavior (Case Studies)

Illuminating examples of lens behavior..

Nikon D850

The best becomes better..

Nikon D800E

36 megapixels in a compact full-frame DSLR..

Nikon D800E vs Canon EOS 5D Mark III

Comparing the 2012/2013 high-res pro DSLRs..

Shift Lenses for Nikon and Canon

[Older material, but still relevant]. Shift lens performance of Nikon/Canon/Schneider/Olympus on various cameras..

Pentax K-3 (APS-C)

23-megapixel APS-C DSLR with an unusual feature set..

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

Tamron’s ultra wide to medium fast zoom..

Sigma 24-35mm f/2 DG HSM Art

Mid-range optimized groundbreaking f/2 zoom..

Sigma 24mm f/1.4 DG HSM Art

Sigma’s fast high performance wide angle..

Sigma 35mm f/1.4 DG HSM Art

Sigma’s fast and affordable moderate excellent wide angle..

Sigma Super Tele Varifocal 120-300mm f/2.8 DG OS HSM S

Sigma’s fast an flexible moderate super telephoto..

Nikon AF-S Nikkor 58mm f/1.4G

Nikon’s High performance normal lens.

Nikon AF-S 300mm f/2.8 VR II

Does high price guarantee quality control and superb images?.

Canon-Wide Angle Prime Lenses

Comparing the 16-35mm f/2.8L II to most of Canon’s wide angle prime lenses. Optical performance, ergonomics, focus, build quality..

Samyang 14mm f/2.8

Ultra wide angle lens for Canon and Nikon..

Introduction

Start here to best utilize this guide..

15mm f/2.8 Distagon

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

18mm f/3.5 Distagon

A brilliant, but also colorful character..

85mm f/1.4 Planar

True-to-life imagery..

100mm f/2 Makro-Planar

King of bokeh! Corner-to-corner sharpness, world class..


Blog posts, reverse chronological

2017

2017-12-08 Reader Comment: Fujifilm GFX Focusing Precision and Skewed Lenses

2017-10-28 Nikon D850: the 2nd Sample is Off Also, both Skewed and Bad Flange Focal Distance

2017-08-19 Sony 12-24mm f/4 G @ 12mm: Single Frame Performance at f/11 vs Focus Stacking at f/11 (Pine at Morgan Lake)

2017-07-23 Sony 12-24mm f/4G Distortion: Uncorrected vs Corrected

2017-07-23 Reader Comment: Sony FE 12-24mm f/4 G Right Side Blur

2017-06-02 Car Problems

2015

2015-10-22 The Irrational Aim of f/1.4 Lenses

2015-08-18 Sony FE 35mm f/1.4 Distagon: Another Bad Sample with Skew / Asymmetry (A7R II)

2015-08-09 Sony 90mm f/2.8: Bad Sample (NOW WITH EXAMPLES)

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

2015-04-04 Tamron SP 15-30mm f/2.8 Di VC USD: Focusing Problems and Lens Skew

2014

2014-07-25 Leica 50mm f/2 APO-Summicron-M ASPH: $900 Price Rise

2014-07-24 A conversation with Ming Thein on the Pentax 645Z and Nikon D810 and More

2013

2013-11-14 Pentax / Ricoh HD Limited Lenses

2013-09-06 Samyang 14mm f/2.8: Lens Skew Asymmetry

2013-08-12 Lens Skew with the Leica 50mm f/2 APO ASPH?

2013-02-22 Lens Skew Study added to MSI

2013-02-20 Sigma 35mm f/1.4 DG HSM: Lens Skew Confirmation (Alternate Scene)

2013-02-20 Sigma 35mm f/1.4 DG HSM: Lens Skew

2012

2012-01-30 Sony NEX-7 + Sony 24mm f/1.8 Sonnar — “Bad Sample” Documented

2010

2010-07-11 Bad sample experience — Nikon AF-S 24mm f/1.4G

2009

2009-12-10 Nikon 70-200/2.8G VR II bad sample

2009-10-05 Canon EF 100/2.8L IS macro lens bad sample

2009-02-17 Follow-up on Nikon PC-E build quality

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