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RUTch
3rd June 2004, 15:08
http://www.wlcastleman.com/equip/reviews/85mm/graphs/85focus.jpg http://www.wlcastleman.com/equip/reviews/85mm/graphs/afacc.jpg

Canon EF 85mm f/1.2 L
Strengths: This lens produced the most pleasing bokeh. Combined with super-shallow depth of focus and the greatest light gathering capacity at f/1.2, it offers capabilities that other lenses cannot match for low-light photography and artistic portraits. Image sharpness in the center of the field was highest of lenses tested at f/2.
Weaknesses/Challenges: This lens weighs 2.4 times more, costs 4.4 times more and focuses only 25% as fast as the EF 85mm f/1.8 lens. Contrast is the lowest of the lenses tested. Weight and slow single shot autofocus function make it a challenging tool for action/performance photography unless you can rely heavily on zone focusing techniques.

Nikon 85mm f/1.4 AF-D
Strengths: This lens offers overall superb image sharpness. It out performs the Canon 85mm 1.2L in sharpness at f/1.4. Overall central and peripheral image sharpness is the best of lenses tested from f/1.4 to f/2. It is only 1.3 times heavier than the EF 85 f/1.8, and it is less than half the cost of the EF 85mm f/1.2L. Images have the greatest contrast of the lenses tested. Autofocus speed for single subject acquisition seems to be nearly as fast as the EF 85 f/1.8. It is hard not to be impressed with this lens for its overall sharpness, contrast and autofocus speed and accuracy in single subject focus acquisition.
Weaknesses/Challenges: The sharp images come at the price of less blurring of the out of focus background. Autofocus tracking function of high speed subjects was poor with the F5. Higher contrast images could be a disadvantage if you are shooting E-6 transparency film under sunny or other high contrast conditions. If you are primarily a Canon shooter and want fast autofocus function coupled with superbly sharp images at f/2 on film, you have to buy and carry an extra body :^(

CanonEF 85mm f/1.8
Strengths: Overall, this is an incredibly sharp and contrasty lens with superior autofocus function in either single focus acquisition or tracking focus mode. Out of focus blur at f/2 (bokeh) is very pleasing for an 85mm lens. It is a very light and compact lens that provides high performance at a relatively inexpensive cost. In the f/4 to f/8 range, performance of this lens is hard to beat.
Weaknesses/Challenges: Image sharpness at f/2 on film is not at the same high level as those found in the top-line Canon telephoto lenses (135mm f/2 L and 200mm f/1.8 L) or in the Nikon 85mm f/1.4 AF-D. If you are capturing images on a CCD or CMOS chip, the story is different.

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