Overview: The Sony SAL24F20Z is a superior quality wide
angle lens that features a large aperture (f/2.0) and fixed focal length of 24mm (35mm
format equivalent is 36mm). It is developed jointly by Carl Zeiss and Sony
Corporation, and produced according to the strict standards and quality
assurance system of Carl Zeiss. The lens comes with a protective padded lens
Compatibility: The SAL85F28 lens is equipped with a Sony
A-mount, and is designed for use with Sony Interchangeable Lens Digital Cameras
with an APS-C size image sensor and Sony 35mm format digital cameras, such as
the DSLR-A900 and DSLR-A850. With an optional LA-EA1 (item # 158LAEA1) mount
adapter, this lens can be used on Sony α (alpha) NEX-series hybrid cameras and
camcorders with the E-mount.
F2.0 Maximum Aperture: This F2.0 lens is able to capture
brilliant high-resolution images, especially in low-light conditions that
require a fully open aperture.
ED (Extra-low Dispersion) Glass: The lens is equipped with
ED (Extra-low Dispersion) Glass. Because light of different wavelengths (or
color) bends at different angles when it passes through a lens, ED Glass helps
eliminate chromatic aberration by correcting certain wavelengths of light. The
result is sharp, clear images with well-defined colors.
Carl Zeiss T* Coating: The lens features T*
(T-star) coatings, developed by Carl Zeiss. The coating virtually eliminates
lens flare, internal reflection, and light scattering.
Super Sonic Wave Motor (SSM): Designed for fast, smooth,
silent automatic focusing, the Super Sonic Wave Motor technology achieves high
torque at low speed with rapid start/stop response. It operates through the
ability of a piezo-electric device to reshape itself quickly when voltage is
Auto/Manual Focus: For auto focusing, both the camera and
the lens must be set to AF. To focus manually, you can either switch the camera
to Manual Focus, or turn the MF-AF switch on the lens to MF, or both. Once set
to Manual Focus, you can bring your subject into focus by turning the focus ring
on the lens while looking through the viewfinder.
Focus Hold Button: The lens has a Focus Hold button, which,
when pressed and held, suspends the auto focus function and fixes the focus for
shooting. If the camera has a custom function capability, the function of the
Focus Hold button can be changed.
Lens Hood: The lens includes the ALC-SH110 lens hood to
reduce flare and ensure maximum image quality. When using the camera's built-in
flash, you should remove the lens hood to avoid blocking the flash light. You
can store the hood by mounting it backwards onto the lens. When attached, the
hood adds approximately 1-3/8" to the length of the lens.
Flash Precautions: When using a built-in camera flash, you
will have to shoot from at least 1 meter (3.3') away from your subject. With
certain lens/flash combinations, the lens may partially block the light of the
flash, resulting in a shadow at the bottom of the picture.
Vignetting: When you use the lens, the corners of the screen may
become darker than the center. To reduce this phenomenon (called vignetting), you
should close the aperture by 1-2 stops.
- Equivalent 35mm-format focal length: 36mm
- Lens Construction: 9 elements in 7 groups
- Angle of View: 61° (APS-C sensor cameras), 84° (35mm
- Minimum Focus: 0.63' (7.56")
- Maximum Magnification: 0.29x
- Minimum f-stop: F22
- Filter Diameter: 72mm
- Weight: 19-5/8 ounces