Canon EF 85 mm f/ 1.8 USM Lens Technical Manual

Page of 2
CT1-8540-002 
© CANON INC. 2006
5. Hood
The lens hood can keep unwanted light out of the lens, and 
also protects the lens from rain, snow, and dust.
EF24mm f/2.8
To attach the hood, align the hood’s attachment position 
mark with the red dot on the front of the lens, then turn the 
hood in the direction of the arrow until the lens’s red dot is 
aligned with the hood’s stop position mark 
,  .
EF24mm f/2.8, EF28mm f/2.8, EF35mm f/2, EF50mm 
f/1.0L USM, EF50mm f/1.8, and EF85mm f/1.2L USM
Press the buttons on both sides of the hood to attach 
.
The hood can be reverse-mounted on the lens for storage.
•  Part of the picture may be blocked if the hood is not 
attached properly.
•  When attaching or detaching the hood, grasp the base of 
the hood to turn it. To prevent deformation, do not grasp 
the rim of the hood to turn it.
6. Filters
You can attach filters to the filter mounting thread on the 
front of the lens  .
•  Only one filter may be attached.
•  Use a polarizing Canon filter.
Filter Holder for the EF15mm f/2.8 Fish-eye
There is a gelatin filter holder at the rear of the lens  . Cut 
the gelatin filter to fit within the white frames. Then insert 
the gelatin filter into the filter holder.
Q
 The lens length is measured from the mount surface to 
the front end of the lens. Add 21.5 mm when including 
the lens cap and dust cap. (Add 16.8 mm for EF15mm 
f/2.8 Fish-eye)
Q
 The size and weight listed are for the lens only, except as 
indicated.
Q
 Aperture settings are specified on the camera.
Q
 All data listed is measured according to Canon 
standards.
Q
 Product specifications and appearance are subject to 
change without notice.
Q
 Case and hood not provided with some models.
Q
 Filters sold separately.
This device complies with Part 15 of the FCC Rules. Operation 
is subject to the following two conditions: (1) This device may 
not cause harmful interference, and (2) this device must accept 
any interference received, including interference that may cause 
undesired operation.
Do not make any changes or modifications to the equipment 
unless otherwise specified in the instructions. If such changes 
or modifications should be made, you could be required to stop 
operation of the equipment.
This equipment has been tested and found to comply with the 
limits for a class B digital device, pursuant to part 15 of the FCC 
Rules.
These limits are designed to provide reasonable protection against 
harmful interference in a residential installation. This equipment 
generates, uses and can radiate radio frequency energy and, if 
not installed and used in accordance with the instructions, may 
cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur 
in a particular installation. If this equipment does cause harmful 
interference to radio or television reception, which can be 
determined by turning the equipment off and on, the user is 
encouraged to try to correct the interference by one or more of the 
following measures:
•  Reorient or relocate the receiving antenna.
•  Increase the separation between the equipment and receiver.
•  Consult the dealer or an experienced radio/TV technician for 
help.
This Class B digital apparatus complies with Canadian ICES-003.
Specifications
Angle of view
Lens 
construction
Minimum 
aperture
Max. 
magnification
Min. focusing 
distance
Filter diameter
Max. diameter and length
Weight
Hood
Case
Diagonal
Vertical
Horizontal
EF15mm f/2.8 Fish-eye
180°
7-8
22
0.14 ×
0.2 m/0.7 ft.
*1
73 × 62.2 mm (2.9” × 2.4”)
330 g/11.6 oz.
*2
LP814
EF24mm f/2.8
84°
53°
74°
10-10
22
0.16 ×
0.25 m/0.8 ft.
58 mm
67.5 × 48.5 mm (2.7” × 1.9”)
270 g/9.5 oz.
EW-60 II
LP811
EF28mm f/2.8
75°
46°
65°
5-5
22
0.13 ×
0.3 m/1 ft.
52 mm
67.4 × 42.5 mm (2.7” × 1.7”)
185 g/6.5 oz.
EW-65 II
LP1011
EF35mm f/2
63°
38°
54°
5-7
22
0.23 ×
0.25 m/0.8 ft.
52 mm
67.4 × 42.5 mm (2.7” × 1.7”)
210 g/7.4 oz.
EW-65 II
LP1011
EF50mm f/1.0L USM
46°
27°
40°
9-11
16
0.11 ×
0.6 m/2 ft.
72 mm
91.5 × 81.5 mm (3.6” × 3.2”)
985 g/34.7 oz.
ES-79 II
LP1219
EF50mm f/1.8
46°
27°
40°
5-6
22
0.15 ×
0.45 m/1.5 ft.
52 mm
67.4 × 42.5 mm (2.7” × 1.7”)
190 g/6.7 oz.
ES-65 III
LP1014
EF85mm f/1.2L USM
28°30’
16°
24°
7-8
16
0.11 ×
0.95 m/3.2 ft.
72 mm
91.5 × 84 mm (3.6” × 3.3”)
1025 g/36.2 oz.
ES-79 II
LP1219
*1 Built-in gelatine filter holder
*2 Built-in