Lens tech data for Sony Alpha 20/2.8

Image: Sony, used by permission
General
NameSony Alpha 20/2.8
Mount typeA-mount
Release year2006
Statuscurrent
Manufacturer's order codeSAL-20F28
Aperture
Minimum aperture22
Aperture blades7, circular
Optical construction
Elements/groups10/9
Minimum focus distance25 cm
Maximum magnification1:7.69 (0.13×)
Focus designrear, floating
Features
AF drivein-body motor
D functionno
Lens buttons
Focus range limiter
Tripod mount
Other featuresdistance scale
Dimensions and weight
Minimum length [mm]53.5
Maximum length [mm]53.5
Maximum diameter [mm]78.0
Filter diameter [mm]/type72/front
Weight [g] nominal/net/gross285/unknown/unknown
Hood
Hood mountbayonet
Hood shapeflower
Hood part numberALC-SH0013
Movements
Filter rotates when focusingno
Length changes when focusingno
Focus ring rotates in AF modeyes
Construction and accessories
Colorblack
Weather sealingno
Mount materialsteel
Standard accessoriesfront cap, rear cap, hood
Optional accessoriespouch LCL-90AM
Misc
Lens ID25791
Commentssame design as Minolta version
Reviews & linksKurt Munger (full review)
Related lenses
Part of camera kit

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