Canon EF 24-70mm f/2.8L II USM Standard Zoom Lens Instruction Manual

Introduction

The Canon EF 24-70mm f/2.8L II USM is a professional-grade standard zoom lens designed for Canon EF-mount cameras. This lens is part of Canon's acclaimed L-Series, known for superb optics, durable construction, and high performance. It features a constant f/2.8 maximum aperture throughout its zoom range, making it versatile for various lighting conditions and creative depth-of-field control. This manual provides essential information for the proper use, care, and maintenance of your lens.

Product Overview

Key Features:

Focal Length: 24-70mm (38.4-112mm equivalent on Canon APS-C cameras).
Aperture: Constant f/2.8 maximum aperture; f/22 minimum.
Autofocus: Ring-type ultrasonic-type AF motor (USM) with full-time manual focusing.
Filter Size: 82mm.
Closest Focusing Distance: 0.38m (1.25 ft).
Image Stabilization: Not included.

What's in the Box:

EF 24-70mm f/2.8L II USM Lens
Lens Cap E-82U
Lens Dust Cap E
Lens Case LP1219
Lens Hood EW-88C
Instruction Book
One Year Warranty Card

Setup

Attaching the Lens:

Remove the rear lens cap and the camera body cap.
Align the red dot on the lens with the red dot on your Canon EF-mount camera body.
Turn the lens clockwise until it clicks into place.

Detaching the Lens:

While pressing the lens release button on the camera body, turn the lens counter-clockwise until it stops.
Remove the lens and attach the rear lens cap and camera body cap.

Canon EF 24-70mm f/2.8L II USM Lens attached to a camera body

Figure 1: Canon EF 24-70mm f/2.8L II USM Lens attached to a compatible Canon EOS camera body.

Operating the Lens

Focal Length and Zoom:

This is a standard zoom lens with a focal length range of 24-70mm. To adjust the focal length, rotate the zoom ring on the lens barrel. The lens maintains a constant maximum aperture of f/2.8 across its entire zoom range, providing consistent low-light performance and depth-of-field control.

Side view of Canon EF 24-70mm f/2.8L II USM Lens showing zoom ring and switches

Figure 2: Side view of the lens, highlighting the zoom ring and control switches.

Aperture:

The lens features a fast, constant maximum aperture of f/2.8. This allows for excellent performance in low-light conditions and provides a shallow depth of field, ideal for isolating subjects with a blurred background (bokeh).

Figure 3: Front view of the lens, illustrating the wide f/2.8 aperture.

Focusing (AF/MF Switch):

The lens is equipped with an AF/MF (Autofocus/Manual Focus) switch. Set the switch to 'AF' for automatic focusing, which is generally recommended for most shooting situations. For precise manual control, slide the switch to 'MF' and rotate the focusing ring to achieve desired sharpness.

Side view of Canon EF 24-70mm f/2.8L II USM Lens showing the AF/MF switch and zoom lock

Figure 4: The AF/MF switch and zoom lock mechanism on the lens barrel.

Zoom Lock Switch:

The lens features a zoom lock switch to prevent the lens barrel from extending unintentionally, especially when carrying the camera with the lens pointed downwards. Engage the lock at the 24mm position when not in use.

L-Series Designation:

The 'L' in the lens name signifies Canon's

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