Sigma 70-200mm f/2.8 APO EX DG HSM OS FLD Telephoto Zoom Lens

1. المقدمة

This manual provides detailed instructions for the proper use and care of your Sigma 70-200mm f/2.8 APO EX DG HSM OS FLD Telephoto Zoom Lens. Designed for Nikon Digital DSLR Cameras, this high-performance lens offers exceptional image quality and versatility for various photographic applications, including sports, wildlife, portraits, and photojournalism.

يرجى قراءة هذا الدليل جيداً قبل استخدام العدسة لضمان الأداء الأمثل وطول العمر.

Figure 1: Sigma 70-200mm f/2.8 Telephoto Zoom Lens for Nikon DSLR Cameras.

2. الميزات الرئيسية

• 70-200mm Focal Length: Versatile telephoto zoom range.
• Constant f/2.8 Maximum Aperture: Excellent low-light performance and shallow depth of field.
• Optical Stabilizer (OS): Provides up to 4 stops of image stabilization, with dual modes for normal and panning shots.
• Hypersonic Motor (HSM): Ensures fast, quiet, and accurate autofocusing with full-time manual focus override.
• FLD Glass Elements: Offers optical performance comparable to fluorite glass, reducing chromatic aberrations.
• Special Low Dispersion (SLD) Glass: Enhances image sharpness and contrast.
• Super Multi-Layer Coating: Minimizes flare and ghosting for clear, high-quality images.
• Internal Focusing and Zooming: Maintains constant lens length during operation.
• الحد الأدنى لمسافة التركيز: 140cm (55.1 inches) with a maximum magnification of 1:8.

3. الإعداد

3.1 تركيب العدسة

1. تأكد من إيقاف تشغيل كل من الكاميرا والعدسة.
2. قم بإزالة غطاء العدسة الخلفية وغطاء جسم الكاميرا.
3. Align the mounting index mark on the lens with the corresponding mark on the camera body.
4. Rotate the lens clockwise (for Nikon F-mount) until it clicks into place. Do not force the lens.

3.2 فصل العدسة

1. تأكد من إيقاف تشغيل الكاميرا.
2. أثناء الضغط على زر تحرير العدسة الموجود على جسم الكاميرا، قم بتدوير العدسة عكس اتجاه عقارب الساعة حتى تتوقف.
3. قم بإزالة العدسة من الكاميرا.
4. Attach the rear lens cap to the lens and the body cap to the camera to protect them from dust and damage.

3.3 تركيب غطاء العدسة

The lens hood helps to block extraneous light and reduce flare. Align the lens hood with the front of the lens and twist until it locks into place. For storage, the hood can be reversed and attached to the lens.

Figure 2: Sigma 70-200mm f/2.8 lens with its hood attached.

3.4 استخدام طوق الحامل الثلاثي

The lens includes a removable tripod collar for better balance when mounted on a tripod, especially given the lens's weight. Loosen the knob on the collar to rotate the lens for vertical or horizontal shooting, or to remove the collar entirely.

4. التشغيل

4.1 التركيز التلقائي (AF) والتركيز اليدوي (MF)

The lens features a switch to select between Autofocus (AF) and Manual Focus (MF) modes. In AF mode, the Hypersonic Motor (HSM) provides fast and quiet focusing. Full-time manual focus override is available, allowing you to fine-tune focus manually even when in AF mode by simply turning the focus ring.

4.2 مثبت الصورة البصري (OS)

The Optical Stabilizer (OS) function helps to reduce camera shake, especially useful in low light or when shooting at longer focal lengths. The OS switch allows you to turn the stabilization ON or OFF. This lens offers two OS modes:

• الوضع 1 (العادي): For general shooting, compensating for vertical and horizontal camera shake.
• Mode 2 (Panning): For tracking moving subjects horizontally, compensating only for vertical camera shake.

ملحوظة:

• Turn the OS OFF when using a tripod to prevent potential image blur.
• The OS may produce a slight sound during operation; this is normal.

4.3 التكبير

Rotate the zoom ring to adjust the focal length between 70mm and 200mm. The internal zooming mechanism ensures the lens length remains constant.

4.4 Using with APS-C Cameras

When used with APS-C (crop sensor) cameras, the effective focal length will be approximately 105-300mm (depending on the camera's crop factor). This provides an even greater telephoto reach.

4.5 Using with Teleconverters

This lens is compatible with Sigma APO teleconverters (sold separately) to further extend its focal length. Refer to the teleconverter's manual for specific attachment and usage instructions.

5. الصيانة

5.1 تنظيف العدسة

• استخدم فرشاة نفخ لإزالة الغبار من سطح العدسة.
• For smudges or fingerprints, use a clean, soft microfiber cloth specifically designed for optics, along with a small amount of lens cleaning solution.
• Never use harsh chemicals or abrasive materials on the lens elements or body.

5.2 التخزين

• احرص دائمًا على تركيب أغطية العدسات الأمامية والخلفية عند عدم استخدامها.
• قم بتخزين العدسة في مكان بارد وجاف، بعيدًا عن أشعة الشمس المباشرة ودرجات الحرارة القصوى.
• في حالة التخزين لفترة طويلة، يُنصح باستخدام مادة مجففة لمنع تكون العفن والفطريات.

Figure 3: Sigma 70-200mm f/2.8 lens stored in its soft case.

6. استكشاف الأخطاء وإصلاحها

7. المواصفات

Figure 4: Approximate dimensions of the Sigma 70-200mm f/2.8 lens.

8. الضمان والدعم

8.1 معلومات الضمان

This Sigma lens is covered by a 4-year Sigma USA warranty. Please retain your proof of purchase for warranty claims. For detailed terms and conditions, refer to the warranty card included with your product or visit the official Sigma webموقع.

8.2 دعم العملاء

For technical assistance, service, or any inquiries regarding your Sigma lens, please contact Sigma Corporation of America customer support. Contact information can be found on the official Sigma webالموقع أو في عبوة المنتج.

9. مقاطع فيديو رسمية للمنتج