Blur from optical behavior or subject-related issue..
Making image captures look sharp..
Understanding the various optical aberrations and behaviors..
Diffuse haze at wide apertures..
Understanding lateral chromatic aberration (color fringing)..
Understanding Longitudinal (Axial) chromatic aberration (LOCA)..
- Longitudinal Chromatic Aberration (LOCA / Violet Fringing)
- Examples of Violet Fringing from Longitudinal Chromatic Aberration (LOCA)
- Violet Fringing Case Study (LOCA with Zeiss Otus vs Others)
- Violet Fringing Case Study (LOCA with Zeiss 85mm and Leica 90mm)
- Correcting Longitudinal Chromatic Aberration During RAW Conversion
Secondary Longitudinal Chromatic Aberration (SLOCA)..
How to verify a good sample and assess all aspects of lens performance..
Working with Photoshop for raw conversion and more..
Medium telephoto with world-class chromatic correction..
Telephoto with world-class chromatic correction..
Sigma’s fast high performance wide angle..
Sigma’s fast and affordable moderate excellent wide angle..
Sigma’s fast high performance normal lens..
Sigma’s best portrait lens..
Sigma’s fast telephoto APO macro lenses..
Nikon’s High performance normal lens.
An ultra-fast older design still offers appeal on modern digital..
A superlative multi-spectral lens with perfect color correction..
A fast moderate wide angle lens with some practical difficulties..
Fast and gorgeous moderate wide angle Zeiss design..
Fast high performance normal lens of Zeiss design..
Compact normal lens for full-frame Sony mirrorless..
Ultra high grade performer at a modest price..
Autofocus wide angle for Sony full-frame mirrorless..
Outstanding build and optical quality in a normal lens..
Outstanding build and optical quality in a medium tele..
The classic 100/2 Makro-Planar improved..
An artist’s drawing tool..
Strokes of a master..
- 35/1.4 Distagon Longitudinal Chromatic Aberration (LOCA)
- Aperture Series: Pine Creek Tungsten Mine Buildings / Waterfall
- Aperture Series: Bristlecone Vista, Late Dusk (Canon 5DS R)
- 35/1.4 Distagon Spherical Aberration Assessment
- vs Sigma 35/1.4 and Nikon 35/1.4G (Nikon D800E, Dolls)
- vs Sigma 35/1.4 and Nikon 35/1.4G (Nikon D800E, Wheel)
- vs Sigma 35/1.4 (Nikon D800E, Boulder Logjam)
Fast high performance APO wide angle..
Ultra high performance apochromatic normal lens, first in the Otus line..
Rendering style, bokeh and 'transparency' without peer..
King of bokeh! Corner-to-corner sharpness, world class..
Beautiful bokeh, razor sharp, superb color correction..
Relative sharpness and performance vs APS-C cameras..
Leica’s fast 28mm..
The world’s best 50mm lens is outstanding, but with some limits..
Leica’s compact 90mm for the M..
2010-05-20 Global cooling? Local at least.