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Black pancake lens for Sony E mount, 20 mm f/2.8, 49 mm filter thread

Sony

Sony SEL20F28 E 20mm f/2.8 camera lens, Ø49

SKU CH-8E5B-87T3V MPN SEL20F28

Ultra-slim 20 mm f/2.8 pancake lens for Sony E-mount APS-C, 30 mm equivalent, three aspherical elements, 49 mm filter thread, 69 g

  • PartCompact ILC Lenses
  • TypeWide Angle Lens
  • ColorBlack
  • Diameter49 mm
  • CompatibilitySony
  • Focus TypeAuto Focus
  • Ultra-compact pancake design adds only 20.4 mm depth
  • 30 mm equivalent wide-angle view suits street and travel
  • Fast f/2.8 aperture enables low-light shooting and shallow depth
  • Stepping motor delivers quiet autofocus for stills and movies
  • Light 69 g weight keeps the kit portable all day

Wide-angle prime for APS-C E-mount

The Sony SEL20F28 is a 20 mm f/2.8 pancake lens built for Sony APS-C E-mount cameras. Its 30 mm full-frame equivalent field of view suits street, travel and everyday documentary work. A stepping motor drives fast, quiet autofocus with direct manual focus override. The lens weighs 69 g and extends only 20.4 mm from the mount.

Step up from kit zoom or 16 mm prime

This prime replaces a standard kit zoom when you want a wider maximum aperture and sharper corner-to-corner rendering at 20 mm. The jump is worth it for low-light street scenes, environmental portraits and video where the f/2.8 aperture and seven-blade circular diaphragm produce smooth background separation. Three aspherical elements control distortion and coma better than most budget zooms.

Fits small bags and gimbal rigs

The 62.6 mm diameter and 20.4 mm length let the combination slip into a jacket pocket or a minimal camera insert. A 49 mm filter thread accepts circular polarisers or ND filters without vignetting. Internal focusing keeps the front element stationary, simplifying filter use during video. Metal mount and rear-focus design maintain alignment on lightweight travel tripods and motorised gimbals.

Highlights

  • Ultra-compact pancake design adds only 20.4 mm depth
  • 30 mm equivalent wide-angle view suits street and travel
  • Fast f/2.8 aperture enables low-light shooting and shallow depth
  • Stepping motor delivers quiet autofocus for stills and movies
  • Light 69 g weight keeps the kit portable all day

Specifications

BrandSONY
ModelSEL20F28
PartCompact ILC Lenses
TypeWide Angle Lens
ColorBlack
Diameter49 mm
CompatibilitySony
Focus TypeAuto Focus
Focal Length20 mm
ApertureMaximum: f/2.8 Minimum: f/16
Camera MountSony (E mount for NEX)
Minimum Focus Distance7.8" (0.2m)
Magnification0.12x
Lens Construction6 elements in 6 groups
Filter thread (Diameter)49 mm
SpecificationsInternal Motor: Yes (Stepping motor)
Non-rotating Focusing Ring: No rotation
Mount Material: Metal
Focus Ring in AF Mode: No rotation
Direct Manual Focus: Yes
Low Noise During Movie Capture: Excellent
Focal Length (35mm equivalent): 30mm
Aspheric Elements: 3 aspheric surface
AF for Movie Capture: Yes
perture Blade: 7 blades (Circular aperture)
Exterior Finish: Metal
AutofocusYes
FeaturesSuperior Image Quality
Compact length
High Quality Exterior
Circular Aperture
Handy Focal Length
Dimensions2-1/2" x 13/16" (62.6 x 20.4 mm)
Weight2.4 oz. (69g)
Shipping weight0.14 kg
Package size89 × 89 × 83 mm

Questions about this item

What filter thread diameter does the Sony SEL20F28 lens use?

The lens has a 49 mm filter thread for attaching circular filters or a lens hood.

How do I attach the SEL20F28 to my Sony APS-C camera and what step is often missed?

Align the white mounting index on the lens barrel with the dot on the E-mount, twist until it clicks, then set the camera to recognise the lens before shooting.

What routine care will the SEL20F28 need over time?

Clean the front and rear glass with a blower and microfibre cloth, keep the metal mount contacts free of dust, and store the lens with caps on when not in use.

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