The world’s only super telephoto reflex lens with auto-focus capability. Its reflex design gives this amazing super telephoto lens a short barrel and compact, lightweight design, ideal for field work on wilderness and nature assignments -- and its auto-focus capability makes it unique among reflex lenses of this class. Mounted on the Sony ® α (alpha) DSLR-A100 camera, this lens provides a 750mm focal length (35mm equivalent) -- and takes advantage of Sony’s in-camera Super SteadyShot® image stabilization system to reduce blur by compensating for shaky hands.
Feature List
Compact Reflex Design:
Its reflective optical system provides super-long telephoto performance in a compact, lightweight design that’s easier to carry on field assignments.

Auto-Focus Operation:
It’s the world’s only super telephoto reflex lens with auto-focus capability, making it ideal for wildlife assignments where events happen fast and you must react quickly to catch the shot.

No Chromatic Aberration:
Reflective optics eliminate the chromatic aberrations that can affect image quality in refractive telephoto lenses, so images are extremely sharp and clear.

Focus Hold Button:
For full creative control, a focus hold button located on the lens can lock auto-focusing.

Shutter-speed Exposure Control:
At fixed f/8 aperture, the exposure is controlled by varying the camera shutter speed and using a neutral-density snap-on filter.
 

Specifications

500mm f/8 Reflex Super Telephoto Lens
World’s only reflex super telephoto with auto-focus
Compact, lightweight design makes it easy to carry
Ideal for on-location wilderness and wildlife shoots
Sharp, clear images with no chromatic aberration
Focus hold button for complete creative control
Exposure control by shutter speed and snap-on ND filter
Focal Length – 35mm Equivalent: 500 mm
Focal Length – APS: 750 mm
Angle of View – 35mm Equivalent: 5ﾟ
Angle of View – APS: 3ﾟ 10'
Min Focus Distance: 13 ft (4.0 m)
Aperture – Maximum: f8
Aperture – Minimum: f8
Maximum Magnification: 0.13X
Lens Construction: 7 elements in 5 groups
Filter Diameter: Internal
Dimensions: 3-5/8 x 4-3/4” (89 x 118 mm)
Weight: 1 lb 7.4 oz (665 g)
Supplied Accessories: Front and rear lens cap, SH0015 lens hood