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Overview: The Sony SAL85F28 is a small, lightweight
standard/medium telephoto lens that features a large aperture (f/2.8) and fixed
focal length of 85mm (35mm format equivalent is 127.5mm) which makes it ideal
for focusing in tight on your subject and capturing great details.
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. It can also be used by 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.
Smooth Autofocus Motor (SAM): The built-in Smooth Autofocus Motor
(SAM) eliminates the need to use a mechanical coupling system in the camera body
to transfer auto focus (AF) drive power and control signals to the lens.
Instead, AF control signals from the camera body are sent to the lens-mounted
SAM unit, which drives the focusing lens group directly, helping to assure
smooth AF response.
Manual Focus: To focus manually using this auto-focus lens, set the camera
body to manual focus and adjust the focus ring on the lens. The shooting
distance scale, located on the barrel of the lens, is graduated in feet as well as
meters from 2' (0.7m) to infinity. For accurate manual focusing, look
through the viewfinder while rotating the focusing ring.
Lens Hood: The lens includes the ALC-SH111 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 a little over 1" 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: 127.5
- Lens Construction: 5 elements in 4 groups
- Angle of View: 19° (APS-C sensor cameras), 29° (35mm
- Minimum Focus: 2' (24")
- Maximum Magnification: 0.2x
- Minimum f-stop: F22
- Filter Diameter: 55mm
- Weight: 6-1/8 ounces