Askar SQA55 264mm f/4.8 APO
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Vai al moduloAskar SQA55 Manual 264mm f/4.8 APO Telephoto Lens: High Precision for Astrophotography and Nature Photography
The Askar SQA55 264mm f/4.8 APO Telephoto Lens is a versatile tool for astrophotographers and nature photographers seeking superior image quality and precision. This manual-focus lens combines advanced optical technology with a robust design, ideal for capturing sharp details of both terrestrial and celestial subjects.
Key Features:
- Focal Length: 264 mm
- Maximum Aperture: f/4.8, adjustable up to f/22
- Aperture Diameter: 55 mm with fully open iris
- Optical System: 5-element Petzval design with built-in field flattener
- Chromatic Correction: APO lens with SD element to minimize chromatic aberrations
- Sensor Compatibility: Supports cameras with sensors up to full frame
- Focusing: Manual, highly precise, with a focus range from 5 meters to infinity
- Camera Connection: M48x0.75 thread with a working distance of 50–60 mm, optimized for 55 mm
- Filter Thread: M67x0.75 on the lens body
- Dew Shield: Diameter 92 mm, reversible for compact transport
- Dimensions: Transport length 244 mm, extended length 316 mm with dew shield
- Weight: 1.84 kg (lens only), 2.18 kg (with handle and mounting plate)
Advanced Features:
- High Optical Precision: Petzval design ensures sharp, distortion-free images, optimized for full-frame sensors.
- Sensitive Manual Focus: Perfect for applications requiring fine adjustments, such as astrophotography.
- Durable and Robust Design: Suitable for extreme conditions like cold winter nights.
- Reversible Dew Shield: Reduces transport size and offers protection when mounted.
- Rotatable Mount: Allows easy adjustment for perfect composition.
Applications:
This lens excels in:
- Astrophotography: Ideal for capturing star fields, nebulae, and celestial phenomena with exceptional clarity.
- Nature Photography: Perfect for landscapes and natural subjects with superior optical quality and high brightness.
Why Choose the Askar SQA55?
The Askar SQA55 combines precision engineering, high-grade optical design, and durable construction, offering reliable performance for all types of photography. It’s the perfect choice for photographers seeking a top-tier tool to capture the best of nature and the night sky.