1。 オーバーview
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. セットアップ
2.1 レンズの取り付け
- レンズの背面キャップとカメラ本体のキャップを取り外します。
- Align the red dot on the lens with the red dot on your Canon SLR camera's lens mount.
- レンズをカメラマウントに挿入し、カチッと音がするまで時計回りに回します。
2.2 レンズの取り外し
- カメラ本体のレンズ取り外しボタンを押しながら、レンズを反時計回りに止まるまで回します。
- カメラからレンズを取り外します。
- Attach the rear lens cap to the lens and the body cap to the camera to protect them from dust and damage.
3.運用
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（オートフォーカス）： For automatic focusing. The Ring-type USM ensures fast, smooth, and quiet AF action.
- MF（マニュアルフォーカス）: 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. メンテナンス
適切な手入れとメンテナンスを行うことで、レンズの寿命が長くなり、最適なパフォーマンスが確保されます。
- レンズクリーニング: 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.
- 防塵： 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.
- ストレージ： 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.
- 取り扱い： Avoid dropping or subjecting the lens to strong impacts. The internal components are delicate.
5。 トラブルシューティング
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 webサイト。
6. 仕様
| 特徴 | 仕様 |
|---|---|
| 焦点距離 | 85mm（固定） |
| 最大絞り | 絞り値1.8 |
| レンズタイプ | 中望遠単焦点レンズ |
| 互換性のある取り付け | キヤノンEF |
| 最短撮影距離 | 2.8フィート（0.85メートル） |
| フィルターサイズ | 58mm |
| 寸法（直径×長さ） | 3.0 x 2.8インチ（75.0 x 71.5mm） |
| アイテム重量 | 15オンス（425g） |
| モデル番号 | 2519A012 |
7. 箱の中身
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
- レンズダストキャップE（リア）
- 保証情報
8.保証とサポート
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 webサイトでご確認ください。購入証明として購入レシートを保管してください。
法的免責事項: SERIAL #21600604 FULL 14 DAY NO HASSLE SATISFACTION GUARANTEE AND A 90 DAY PARTS AND LABOR WARRANTY.
