This page shows results and examples from 85mm lenses. The 21-megapixel Canon EOS 1Ds Mark III was used to allow the maximum number of lenses to be tested, including Leica and Nikon.
The amount of focus shift varies by lens. These examples were shot at a distance of approximately 68 inches (1.72 meters). This is a distance that frames a loose head-and-shoulders portrait, which means that focus shift has the potential to throw the all-important eyes into blur when focusing wide open (f/1.2 or f/1.4 or f/2) and shooting stopped down.
The lens was focused at f/1.2. Focus shift is negligible, effectively absent.
Worth noting is the obnoxious color bokeh in the foreground and background with ugly magenta/green fringes. This is due to uncorrected (non apochromatic) color aberration and is very common with fast lenses. It improves greatly by f/2.8.
Article continues for subscribers...
If you’re already a subscriber, CLICK HERE TO LOG IN
diglloyd Advanced Photography includes hundreds of pages of exclusive coverage and high resolution, Retina-grade example pictures detailing Canon and Nikon DSLR bodies and their lenses, with in-depth analysis of sharpness and contrast, color, bokeh, vignetting, distortion, MTF, and flare. Also included is a wealth of in-context technique and workflow insight. Since 2006, diglloyd Advanced Photography is the authoritative review and on-line reference for discerning Canon and Nikon shooters. Subscriptions cost $ per year.
Focused at f/1.2