EOS Documentation Project

EF 35mm f/2

by Gary Fisher

Contents

• Introduction

  Parts  Description 

• Operation

  Mounting  Removal  Manual Focus  Auto Focus  Aperture 

• Accessories

  Lens Cap  Hood  Filters  CloseUp  Teleextender  Extension Tubes  Case 

• Incompatibilties

  EF-M body 

• Precautions
• Lens Care

  Storage  Service 

• Specifications

  Released  Dimensions  Weight  Filter Mount  Optics  Focus mechanism  Rotating Filter Mount  Focus Range  Autofocus Motor  Focal Length  Magnification  Angle of view  Aperture blades  Aperture Range 

• Revision History
• Comments

Introduction

Parts

          Click above images to view larger versions
From front to back: Front lens cap; 52mm filter thread; Distance scale in ft and m; f11 & f22 Depth of Field marks; IR focus adjust red dot; Focusing ring; AF/M lens mode switch; Raised Red Dot for lens-to-camera alignment; EF Camera mount (metal); Rear lens cap.

Description

This lens is a fast wide angle prime lens with autofocus and electronic diaphragm for use on Canon EOS series cameras.  The lens is suitable for general and low-light photography.

Operation

Mounting

Prepare camera body by removing body cap or previous lens (see next section). Match the raised red dot on the lens with the red dot on the camera. Gently twist the lens clockwise until the lens locking pin clicks into place. Ensure that the lens is securely locked before using the camera.

Removal

Depress the lens release button fully. Rotate the lens counterclockwise until the raised red dot on the lens matches the rot dot on the camera. Remove the lens carefully.

Warning: Do not rest the lens on the camera mount, otherwise damage can occur to the delicate electronic contacts. When not mounted on a camera the rear lens cap should always be in place to prevent damage to the electrical contacts and the rear glass element of the lens.

Manual Focus

Slide the lens mode switch on the lens to "M". This disengages the autofocus motor. Look through the camera viewfinder at the subject, then rotate the focusing ring on the lens until you see the viewfinder image is as sharp as possible¹. The front part of the lens does not rotate during focusing, although it does move in and out (i.e. backward and forward). If you manually focus while holding the shutter release button half-depressed, the focus sensors in the camera may indicate in the viewfinder when sharp focus is detected in a focusing zone.

Note 1: When photographing at very close range, it may be easier to focus by leaving the focusing ring set to the closest focus setting, and moving the camera back and forth until sharp focus is achieved.

Auto Focus

Slide the lens mode switch on the lens to "AF". This engages the autofocus motor. Look through the camera viewfinder and position a focusing zone over the subject. Hold the shutter release button half-depressed to activate autofocus¹. The front part of the lens does not rotate during autofocus, although it does move in and out (i.e. backward and forward). When sharp focus is detected, the camera will indicate in the viewfinder with a light, and may also beep softly. If the autofocus sensors cannot detect sufficient detail, the viewfinder focus indicator will blink, indicating out-of-focus². When the lens is switched to "AF" mode, it is possible to focus manually without first setting the lens mode switch to "M". This feature is commonly used in conjunction with a custom function on the camera body (CF4) which shifts the autofocus activation from the shutter release to the AE-Lock button on the rear of the camera.

Note 1: On some camera bodies a custom function allows autofocus activation to be shifted from the shutter release to the AE-Lock button on the rear of the camera.
Note 2: Autofocus accuracy can be enhanced by using the autofocus assist beam on some camera bodies and on some flash units.

Aperture

All Canon EF lenses have an electronic diaphragm, which means that the lens aperture is controlled electronically from the EOS camera body, rather than by the traditional aperture ring. For instructions on changing the aperture setting of any Canon EF (or EF compatible) lens, please refer to the operating instructions for the camera body.

Accessories

Lens Cap

52mm part number E-52

Hood

Lens hood part number EW-65

Filters

52mm thread for filter accessories. Multiple filters should not be used simultaneously to avoid vignetting (vignetting is a darkening of the corners of the resulting photgraph due to the rims of the stacked filters blocking part of the field of view of the lens).

CloseUp

52mm close-up lenses 250D (part number C543861), 500 (part number C543921) & 500D (C543881). The 250D is the recommended choice as it is suited to lenses with a focal length in the range of 30mm to 135mm. The 500D and 500 are more suitable for lenses with a focal length the range of 70mm to 300mm.

Teleextender

This lens is not compatible with either Canon EF 1.4x or EF 2x Tele-extenders which have a protruding front element. Third Party teleconverters designed for Canon Autofocus mount can be often be used successfully, but compatibility is not guaranteed.

Extension Tubes

Compatible with EF-12 and EF-25 extension tubes

Case

LH-89 (Hard Case) or ES-C9 (Soft Case)

Incompatibilties

EF-M body

The EF-M camera does not have autofocus sensors. All EF lenses operate in manual focus mode only. It is neccessary to switch it to the "M" position for use.

Precautions

Do not rest the lens on the camera mount, otherwise damage can occur to the delicate electronic contacts. When not mounted on a camera the rear lens cap should always be in place to prevent damage to the electrical contacts and the rear glass element of the lens.

Do not disassemble the lens - there are no user serviceable parts inside.

As with all precision electrical and mechanical equipment do not expose the lens to water, particularly salt water.

Do not attempt to mount the lens on any camera body other than a Canon EOS series camera as this could result in damage to both the lens and camera body¹. Please note that earlier model Canon cameras using FD or earlier mounts are also not compatible with EF lenses.

Note 1: Adaptors may be available to allow the use of EF lenses on other camera bodies but care should to taken to ensure that no damage results from their use.

Lens Care

Storage

When not mounted on a camera body, store with the front and rear lens caps in place to prevent accidental scratching or other damage.

Store in dry conditions to prevent the possible build up of fungus between the glass elements of the lens.

Service

There are no user serviceable parts - please return the lens to an authorised Canon service centre for adjustment or repair.

Specifications

Released

October 1990

Dimensions

Maximum Diameter x Length:
67.4mm x 42.5mm / 2.7in x 1.7in

Weight

210g / 7.4oz

Filter Mount

52mm threaded mount for front mounted accessory filters

Optics

7 elements in 5 groups

Focus mechanism

This lens focuses using the front lens elements. The front elements move in and out (i.e backward and forward) during focusing.

Rotating Filter Mount

The front element and inner lens barrel do not rotate during focusing. This makes it suitable for use with filters such as polarisers.

Focus Range

0.25 metres / 0.8 feet ~ infinity.

Autofocus Motor

Arc Form Drive type Motor

Focal Length

35mm

Magnification

Lens alone	Maximum 0.32
12mm extension	0.58-0.35
25mm extension	1.00-0.77
with 250D lens
with 500/500D lens

Angle of view

Diagonal	63°
Vertical	38°
Horizontal	54°

Aperture blades

5

Aperture Range

f2 ~ f22

Revision History

v0.11b2002Sep04 jul: minor reformat
v0.11 2001Jan07 Gary Fisher: Minor corrections and revisions.
v0.10 2001Jan05 Gary Fisher: First Draft

Comments

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