EF85mm f/1.4L IS USM

EF85mm f/1.4L IS USM

Canon has created its first IS-equipped lens in this 85mm medium telephoto "portrait lens." The EF85mm f/1.4L IS USM features a wide f/1.4 aperture, yet is compact and light. This well-balanced lens offers both mobility and high image quality. With a glass-mold aspherical lens and an image stabilization effect the equivalent of four stops,* it realizes sharp imaging performance for subjects and beautiful bokeh for backgrounds, even in low-light indoor portrait photography. Its fast, high-precision AF ensures the capture of decisive moments. In scenarios such as wedding photography, this innovative lens meets the exacting demands of pro users.

  • *When EOS-1D X Mark II is used. Conforms to CIPA standards.

SAMPLE PHOTOS

  • EF85mm f/1.4L IS USM, Canon EOS 5D Mark IV, 1/640sec., f/2.8, ISO200
  • EF85mm f/1.4L IS USM, Canon EOS 5D Mark IV, 1/2500sec., f/1.4, ISO200
  • EF85mm f/1.4L IS USM, Canon EOS 5D Mark IV, 1/400sec., f/5.6, ISO100
  • EF85mm f/1.4L IS USM, Canon EOS 5D Mark IV, 1/2000sec., f/1.4, ISO100

SPECS

Construction
(groups-elements)
10-14
Angle of View
(horizontal, vertical, diagonal)
24°/ 16°/ 28°30’
No. of Diaphragm Blades 9
Closest Focusing Distance 0.85m
Maximum Magnification 0.12x
Water/dust Resistance Yes
Filter Size 77mm
Max. Diameter x Length Ø88.6 × 105.4mm
Weight Approx. 950g
Extension Tube EF12 II 0.26−0.15x
Extension Tube EF25 II 0.43−0.33x
Lens Cap E-77 II
Lens Hood ET-83E
Lens Pouch/Case LP1219

  • GMo aspherical lens
  • ASC
  • Fluorine Coating

MTF Characteristics

Spatial frequency Maximum aperture
S M
10 lines/mm
30 lines/mm
How to read
MTF characteristics

Spatial frequency Maximum aperture
S M
10 lines/mm
30 lines/mm

The more the S and M curves are in line, the more natural the blurred image becomes.

Modulation Transfer Function, or MTF, is a method of evaluating lens performance using contrast reproduction ratio. When evaluating the electrical characteristics of audio equipment, one important measure of performance is frequency response. This indicates the fidelity of the reproduced sound with respect to the source sound as it passes through the microphone, recording and playback circuits, and finally the speakers. When the reproduction is accurate, the equipment is classified as “hi-fi,” or “high fidelity.”
In the same way, when a lens is viewed as a transmission system for optical signals, measuring the frequency response of the optical system reveals whether the optical signal is transmitted faithfully. For a lens, the equivalent of frequency is “spatial frequency,” which indicates how many patterns, or cycles, of changes in sinusoidal density are present in a 1 mm width. Accordingly, the unit of spatial frequency is lines per mm, as opposed to Hz in electrical systems.

The MTF characteristics shown on this website are 10 lines/mm and 30 lines/mm, where the horizontal axis indicates image height (the distance on a diagonal line from the center of the image, in mm) with the image center set to 0, and the vertical axis indicates contrast. The closer the 10-line/mm curve is to 1, the better the contrast and clarity of the lens; the closer the 30-line/mm curve is to 1, the better the resolving power and sharpness of the lens. Although a good balance between both of these is important for a lens to be sharp and clear, a lens is generally said to offer excellent image quality if the 10-line/mm curve is greater than 0.8, or satisfactory image quality if greater than 0.6.

Resolving power and contrast are both good

Contrast is good; resolving power is poor

Resolving power is good; contrast is poor