Canon EF 85mm f/1.8 USM Medium Telephoto Lens Instruction Manual

1. Overview

The Canon EF 85mm f/1.8 USM Medium Telephoto Lens is designed for Canon SLR cameras, offering a fixed 85mm focal length and a wide f/1.8 maximum aperture. This lens is highly practical for various applications, including portraiture, due to its ability to perform well in low-light conditions and create a shallow depth of field for artistic background blur. It features a Ring-type Ultrasonic Motor (USM) for fast, smooth, and quiet autofocus operation.

The lens is compact, measuring approximately 3 inches in diameter and 2.8 inches long, and weighs about 15 ounces. It is not a zoom lens, meaning the focal length is fixed at 85mm.

2. Setup

2.1 Attaching the Lens

1. Remove the rear lens cap and the camera body cap.
2. Align the red dot on the lens with the red dot on your Canon SLR camera's lens mount.
3. Insert the lens into the camera mount and turn it clockwise until it clicks into place.

2.2 Detaching the Lens

1. While pressing the lens release button on the camera body, turn the lens counter-clockwise until it stops.
2. Remove the lens from the camera.
3. Attach the rear lens cap to the lens and the body cap to the camera to protect them from dust and damage.

3. Operating

3.1 Focus Mode Switch

The lens features an AF/MF switch on its side. This switch allows you to select between autofocus (AF) and manual focus (MF) modes.

• AF (Autofocus): For automatic focusing. The Ring-type USM ensures fast, smooth, and quiet AF action.
• MF (Manual Focus): For manual focusing. Turn the focusing ring on the lens to adjust focus.

3.2 Aperture and Depth of Field

With a maximum aperture of f/1.8, this lens excels in low-light conditions, allowing more light to reach the camera sensor. The wide aperture also enables a shallow depth of field, which is ideal for isolating your subject from the background, creating a pleasing blur (bokeh). This characteristic makes it particularly suitable for portrait photography.

3.3 Fixed Focal Length

This is a fixed focal length (prime) lens at 85mm. It does not have a zoom function. To change your framing or perspective, you will need to physically move closer to or further from your subject.

3.4 Minimum Focusing Distance

The closest focusing distance for this lens is 2.8 feet (0.85 meters), allowing for relatively close-up shots while maintaining subject isolation.

4. Maintenance

Proper care and maintenance will ensure the longevity and optimal performance of your lens.

• Lens Cleaning: Use a soft, lint-free cloth and a specialized lens cleaning solution to clean the front and rear elements. Avoid touching the glass with your fingers.
• Dust Protection: Always keep the front and rear lens caps on when the lens is not in use or not attached to the camera. This prevents dust and debris from entering the lens and camera body.
• Storage: Store the lens in a dry, cool place, away from direct sunlight and extreme temperatures. If storing for extended periods, consider using a dehumidifying agent.
• Handling: Avoid dropping or subjecting the lens to strong impacts. The internal components are delicate.

5. Troubleshooting

For detailed troubleshooting steps and solutions to common issues, please refer to the comprehensive user manual provided with your Canon SLR camera or visit the official Canon support website.

6. Specifications

7. What's in the Box

Upon purchase, your Canon EF 85mm f/1.8 USM Lens package should include the following items:

• Canon EF 85mm f/1.8 USM Lens
• E-58U 58mm Snap-On Lens Cap
• Lens Dust Cap E (Rear)
• Warranty Information

8. Warranty & Support

This product comes with a 1-year manufacturer's warranty. For warranty claims or technical support, please contact Canon Customer Service or visit their official website. Keep your purchase receipt as proof of purchase.

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