Pentax
Pentax 21660 50-135mm f/2.8 Telephoto Zoom Lens
★★★★★
f/2.8
Capture Distant Subjects with ClarityThe Pentax SMC DA Series 50-135mm Telephoto Zoom Lens. Designed exclusively for Pentax digital SLR cameras, this lens offers a fast F/2.8 aperture and weather-resistant construction. With smooth autofocusing and sharp image quality, it's perfect for sports and...
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Overview
Capture Distant Subjects with Clarity
The Pentax SMC DA Series 50-135mm Telephoto Zoom Lens. Designed exclusively for Pentax digital SLR cameras, this lens offers a fast F/2.8 aperture and weather-resistant construction. With smooth autofocusing and sharp image quality, it's perfect for sports and wildlife photography.
- Focal Length: 50-135mm
- Maximum Aperture: F/2.8
- Lens Mount: Pentax KAF2
- Lens Construction: 18 elements in 14 groups
- Angle of View: 31.5 to 11.9 degrees
- Minimum Focusing Distance: 1 meter
- Filter Size: 67mm
- Maximum Magnification: 0.17x
Key Features
50-135mm telephoto zoom lens with F/2.8 maximum aperture for Pentax digital SLR cameras
Aspherical elements, special optical-glass elements, and original glass coatings
Tightly sealed weather- and dust-resistant housing stands up to rainy or dusty conditions
SDM system produces smooth, quiet autofocusing; SP coating protects exposed lens elements
Measures 3 inches in diameter and 5.4 inches long; weighs 24.2 ounces without hood
Specifications
Focal Length
50-135mm
Maximum Aperture
f/2.8
Lens Type
Telephoto Zoom
Mount Compatibility
Pentax digital SLR cameras
Special Optical Elements
Aspherical elements, special optical-glass elements
Coatings
Original glass coatings, SP coating
Autofocus System
SDM (Supersonic Direct-drive Motor)
Environmental Resistance
Weather- and dust-resistant
Dimensions
3 inches (diameter) x 5.4 inches (length)
Weight
24.2 ounces (without hood)
Pros & Cons
👍 Pros
- This 50-135mm telephoto zoom lens provides a versatile focal range for various photography scenarios.
- It features a fast F/2.8 maximum aperture throughout the zoom range, allowing for excellent low-light performance and shallow depth of field.
- The inclusion of aspherical elements and special optical-glass elements contributes to superior image quality.
- Original glass coatings are utilized to reduce flare and ghosting, enhancing image clarity and contrast.
- Its tightly sealed weather- and dust-resistant housing makes it suitable for use in challenging environmental conditions.
- The SDM system ensures smooth and quiet autofocusing, which is beneficial for both stills and video.
- An SP coating protects the exposed lens elements, making them easier to clean and resistant to smudges.
👎 Cons
- The lens measures 3 inches in diameter and 5.4 inches long, which might be considered somewhat large and heavy for a telephoto zoom.
- Weighing 24.2 ounces without the hood, it adds noticeable bulk to a camera setup, potentially impacting portability.
- Its compatibility is specifically for Pentax digital SLR cameras, limiting its use with other camera brands.
- The F/2.8 aperture, while fast, is not the widest available, meaning extremely shallow depth of field effects may be surpassed by prime lenses.
- Users might need to purchase a separate lens hood, as the weight specification indicates it's not included.
Frequently Asked Questions
What is the focal length range of the Pentax 21660 lens?
The Pentax 21660 is a telephoto zoom lens with a versatile focal length range of 50-135mm.
What is the maximum aperture of this lens?
This lens features a bright F/2.8 maximum aperture, which remains consistent throughout its zoom range, beneficial for low-light shooting.
Is the Pentax 21660 lens weather-sealed?
Yes, it boasts a tightly sealed weather- and dust-resistant housing, making it durable for use in various outdoor conditions.
What kind of autofocus system does this lens use?
The lens utilizes an SDM (Supersonic Direct-drive Motor) system, which provides smooth and quiet autofocusing performance.
Does the lens have any special coatings for optical quality?
Yes, it incorporates original glass coatings to reduce flare and ghosting, and an SP coating protects exposed lens elements for durability and easier cleaning.
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