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Black cylindrical Sony E-mount prime lens, 55mm f/1.8, 49mm filter thread, matte finish with silver accent ring

Sony

Sony SEL55F18Z 55mm F1.8 ZA camera lens

SKU CH-TH3S-QP31Q MPN SEL55F18Z

A compact 55 mm f/1.8 prime with Carl Zeiss T* coating, nine-blade circular aperture and dust- and moisture-resistant construction for Sony E-mount full-frame cameras

  • PartCompact ILC Lenses
  • TypeFixed Length Lens
  • ColorBlack
  • Diameter49 mm
  • CompatibilitySony
  • Focus TypeAuto Focus
  • Wide f/1.8 aperture for low-light shooting
  • Carl Zeiss T* coating reduces flare and ghosting
  • Nine-blade circular diaphragm creates smooth bokeh
  • Dust and moisture resistant build for tough conditions
  • Compact 2.44" diameter fits full-frame E-mount bodies

Sony 55mm F1.8 ZA Prime Lens

The Sony SEL55F18Z is a fixed focal length prime lens designed for Sony E-mount full-frame cameras. It suits photographers who want a compact, high-performance normal lens with a bright maximum aperture. The Carl Zeiss Sonnar T* coating and advanced optics deliver strong contrast and resolution across the frame. It is not for shooters who need zoom flexibility or macro magnification beyond 0.14x.

Aperture Range f/1.8 to f/22 and 55mm Focal Length

The large f/1.8 maximum aperture provides shallow depth of field and strong low-light capability, while the nine-blade circular diaphragm produces smooth bokeh. Stopping down to f/22 extends depth of field for landscape or architectural work. On APS-C bodies the 35mm-equivalent focal length becomes 82.5mm, shifting the lens into short telephoto territory. The minimum focus distance of 19.70 inches limits close-up work to moderate magnifications.

Sony E Mount Compatibility and Optical Design

The lens mounts natively on Sony E-mount full-frame and APS-C cameras, covering a 29 to 43 degree angle of view on full frame. Five aspherical elements and one ED glass element work with the Carl Zeiss T* coating to suppress aberrations and flare. The 49mm filter thread accepts standard accessories, and the dust and moisture-resistant construction supports use in challenging conditions. Optical SteadyShot stabilization is not built into this lens, so stabilisation depends on the camera body.

Highlights

  • Wide f/1.8 aperture for low-light shooting
  • Carl Zeiss T* coating reduces flare and ghosting
  • Nine-blade circular diaphragm creates smooth bokeh
  • Dust and moisture resistant build for tough conditions
  • Compact 2.44" diameter fits full-frame E-mount bodies

Specifications

BrandSONY
ModelSEL55F18Z
PartCompact ILC Lenses
TypeFixed Length Lens
ColorBlack
Diameter49 mm
CompatibilitySony
Focus TypeAuto Focus
Focal Length55 mm
ApertureMaximum: f/1.8 Minimum: f/22
Camera MountSony (E mount for NEX)
Angle of View29 - 43 degrees
Minimum Focus Distance19.70"
Magnification0.14x
Filter thread (Diameter)49 mm
SpecificationsFocal Length (35mm equivalent): 55mm (35mm) 82.5mm (APS-C)
Aperture Blade: 9 blades (Circular aperture)
AutofocusYes
FeaturesA fixed focal length prime that delivers outstanding performance with 35mm full frame format cameras
Carl Zeiss T coating, five aspherical elements, and one ED glass element combine to deliver superior image quality
Fast F1.8 maximum aperture
Dust and moisture resistant design
Dust and moisture resistant design
Dimensions2.44" x 2.66" (Diameter x Length)
Weight10.00oz
Shipping weight0.57 kg
Package size206 × 114 × 112 mm

Questions about this item

Will the 49 mm filter thread on this SEL55F18Z match the circular polariser I already use on my older Sony lenses?

Yes, the 49 mm thread diameter is identical to many Sony E-mount primes, so your existing filters will screw on directly without step-up rings.

How can I verify the nine-blade circular diaphragm is producing smooth bokeh at f/1.8 after I mount the lens?

Shoot a point-light background wide open at f/1.8; the out-of-focus highlights should render as round, evenly illuminated discs with no polygonal edges.

Does the box include a protective pouch or do I need to buy a separate case for the 55 mm F1.8 ZA?

The package supplies front and rear caps plus a dedicated lens hood; a soft pouch or hard case is not included and must be purchased separately.

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