EXCERPT page containing first few paragraphs. 2021-10-21 00:53:34
UA_SEARCH_BOT_null @ 188.8.131.52
The Sigma 120-30mm offers very pleasing results at close range, here at 270mm the lens provides very pleasing blur and sharpness and excellent control of secondary color, for a very appealing clarity.
Due to the backlighting, a setting of Shadows +50 was used in Adobe Camera Raw conversion to facilitates a more appealing contrast balance.
Backlit bottles in cabin window
The lens was on a tripod, and zoomed to 270mm, optical stabilization disabled as it ought to be on a tripod. A remote release was used along with vibration-free Canon Mode II Live View exposure. Shutter speeds ranged from 1/80 second at f/2.8 to 1/3 second at f/16.
This is a infinity focus image with the research center being several miles distant. Contrast-detect AF in Live View 10X was used for focusing, and Canon’s vibration-free Mode II was used for exposure.
Article continues for subscribers...
Diglloyd Advanced DSLR is by yearly subscription. Subscribe now for about 16 cents a day ($60/year).
BEST DEAL: get full access to ALL 8 PUBLICATIONS for only 68 cents a day ($249.95)!
Diglloyd DAP is DSLR-oriented, but also contains workflow and other topics. Much of the focus is on Canon and Nikon but also Pentax and Pentax medium format.
Special emphasis is placed on lens evaluation, focusing on Canon and Nikon and Sigma lenses, but with a few others like Rokinon/Samyang.
- Make better images by learning how to get the best results right away.
- 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.
- Workflow discusses image organization, raw conversion and post processing. Many examples show processing parameters for direct insight into how the image was converted.
- Jaw-dropping image quality found nowhere else utilizing Retina-grade images up to full camera resolution, plus large crops [past 2 years or so].
- Real world examples with insights found nowhere else. Make sharper images just by understanding lens behavior you won’t read about elsewhere.
- Aperture series from wide open through stopped down, showing the full range of lens performance and bokeh.
- Optical quality analysis of field curvature, focus shift, sharpness, flare, distortion, and performance in the field.