Sigma
Sigma 789109 18-125mm Zoom Lens for Pentax/Samsung
★★★★★
f/3.5
Expand Your Creative Horizons with the Sigma 18-125mm Zoom LensThe Sigma 18-125mm f/3.5-5.6 DC IF Aspherical Zoom Lens is exclusively designed for digital SLR cameras, offering a high magnification zoom ratio for versatile shooting. With SLD glass and aspherical elements, this lens ensures high o...
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Overview
Expand Your Creative Horizons with the Sigma 18-125mm Zoom Lens
The Sigma 18-125mm f/3.5-5.6 DC IF Aspherical Zoom Lens is exclusively designed for digital SLR cameras, offering a high magnification zoom ratio for versatile shooting. With SLD glass and aspherical elements, this lens ensures high optical performance across the entire zoom range.
- Compatibility: Pentax and Samsung Digital SLR Cameras
- Focal Length: 18-125mm
- Aperture: f/3.5-5.6
- Optical Design: Special Low Dispersion (SLD) glass and two aspherical lens elements
- Minimum Focusing Distance: 50cm (19.6in.) at all focal lengths
- Focusing System: Inner focusing system
- Zoom Lock Switch: Yes
Key Features
Pentax SLR AF mount; standard zoom lens
Aspherical lens and internal focusing
18 to 125 mm focal length
f/3.5 maximum aperture
6.9x magnification
Specifications
Brand
Sigma
Model
789109
Lens Type
Zoom Lens
Focal Length
18-125mm
Maximum Aperture
f/3.5
Lens Mount
Pentax SLR AF
Magnification
6.9x
Special Features
Aspherical lens, Internal focusing
Pros & Cons
👍 Pros
- Features an 18-125mm focal length, offering a versatile zoom range suitable for many shooting scenarios.
- Designed with an Aspherical lens, which helps to correct various optical aberrations for sharper images.
- Utilizes internal focusing, preventing the front of the lens from rotating during focus and allowing for easier use of polarizing filters.
- Compatible with Pentax SLR AF mount, providing seamless integration with a specific range of camera bodies.
- Offers a 6.9x magnification, allowing for impressive close-up details within its zoom range.
👎 Cons
- The f/3.5 maximum aperture might be limiting in low-light conditions compared to lenses with wider apertures.
- While versatile, an 18-125mm zoom lens can sometimes exhibit compromises in sharpness at extreme ends of its focal range.
- Specifically designed for Pentax/Samsung mount, limiting its compatibility with other camera brands.
- Lacks a wider aperture for achieving very shallow depth of field effects, common in portrait photography.
- The specific image stabilization feature is not mentioned, which might be a consideration for handheld shooting at longer focal lengths.
Frequently Asked Questions
What camera brands is this Sigma lens compatible with?
This Sigma 18-125mm zoom lens is specifically designed for Pentax/Samsung SLR AF mount cameras.
What is the focal length range of this lens?
The lens offers a versatile focal length range of 18mm to 125mm, covering wide-angle to telephoto perspectives.
Does this lens have a fixed aperture?
No, it has a maximum aperture of f/3.5, which will vary as the focal length changes.
What does "Aspherical lens" mean for image quality?
An aspherical lens element helps to correct spherical aberrations and distortions, contributing to sharper images across the frame.
Is this lens suitable for portrait photography?
While it can be used for portraits, the f/3.5 maximum aperture is moderate and may not produce the extremely shallow depth of field characteristic of faster prime lenses.
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