Optical quality analysis of field curvature, focus shift, sharpness, flare, distortion, and performance in the field.

Aperture series from wide open through stopped down, showing the full range of lens performance and bokeh.

Make sharper images just by understanding lens behavior you won’t read about elsewhere.

Real world examples with insights found nowhere else.

Jaw-dropping image quality found nowhere else utilizing Retina-grade images up to full camera resolution, plus large crops.

Many examples show processing parameters for direct insight into how the image was converted.

Workflow discusses image organization, raw conversion and post processing.

Save money by choosing the right lens for your needs the first time, particularly some of the new Sigma Art lenses vs Nikon and Canon.

Make better images by learning how to get the best results right away.

Special emphasis is placed on lens evaluation, focusing on Canon and Nikon and Sigma lenses, but with a few others like Rokinon/Samyang. Much of the focus is on Canon and Nikon but also Pentax and Pentax medium format.

Subscribe now for about 16 cents a day ($60/year).īEST DEAL: get full access to ALL 8 PUBLICATIONS for only 68 cents a day ($249.95)!ĭiglloyd DAP is DSLR-oriented, but also contains workflow and other topics. Diglloyd Advanced DSLR is by yearly subscription.

Zeiss siemens star test chart