This series is a visualization tool for bokeh and sharpness of the Canon EF 85mm f/1.2L II across its aperture range, particularly for sharpness in combination with bokeh.
See also Landscape Photography at Wide Apertures.
Bristlecone stump, Patriarch Grove
Shot with the 22-megapixel Canon 5D Mark III at ISO 100.
Take time to observe the interplay of sharpness versus blur; to my eye using ƒ/2.8 - ƒ/4 delivers an exceptionally pleasing effect with a razor sharp subject and nicely blurred background in which color bokeh (secondary longitudinal chromatic abberation) is minimized.
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Since 2006, Diglloyd Advanced Photography is the authoritative review and reference for DSLRs and their lenses: Canon and Nikon primarily, but also Pentax and some medium format. Reviews of key DSLRs are included, but the primary focus is on lens performance. Also included is a wealth of technique and workflow approaches.
DAP includes thousands of pages of exclusive coverage and high resolution Retina-grade examples detailing Canon and Nikon DSLR bodies and their lenses, with in-depth analysis of sharpness and contrast, color, bokeh, vignetting, distortion, MTF, and flare, behavioral and practical usage.