Olympus M. Zuiko 45mm f/1.8

Prime portrait lens for PEN, OM-D, and other mirrorless cameras

Item #: 279M45F18

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Fixed focal-length lenses have an image integrity that zoom lenses struggle to match. Because they feature fewer elements and moving parts, it's easier for them to achieve stunning clarity and sharpness. This lens falls into that category, but what's more, it does so with a light-gathering, dimension-enhancing f/1.8 aperture and a perfect length for portrait photography that's equivalent to 90mm on a 35mm camera. That means close-ups of kids, pets, grandparents and other loved ones that pop off the page, framed print, or screen. It also means shots of things like streetscapes that enhance a sense of space. This is a great choice for your first fixed-length lens, as it lends itself to rewarding experimentation.

Product Highlights:

  • 45mm f/1.8 lens
  • light-gathering portrait-length lens accommodates compact system cameras
  • 90mm effective focal length
  • ideal for portraits, pet photography, children in action, and documenting objects
  • minimum focus distance: 19.7 inches
  • minimum aperture: f/22
  • lens construction: 9 elements in 8 groups
  • f/1.8 aperture allows for isolation of your subject in space
  • specialized optics help eliminate color fringing and keep images sharp
  • attachment/filter size: 37mm
  • lens is 2-1/4" in diameter, 1-13-16" long
  • weight: 4.09 oz.
  • warranty: 1 year
  • Our 60-day money-back guarantee
Supplied Accessories:
  • front and rear lens cap

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Hands-on research

What's in the box?

Download owner's manual

  • Silver M.Zuiko Digital 45mm F1.8 lens
  • LC-37B front lens cap
  • LR-2 rear lens cap
  • Instructions
  • Warranty card

Features and Specs

Brand Compatibility Olympus
Image Stabilization No
Focal Length 45mm
Maximum Aperture F1.8
Weight 4.09 ounces
Parts Warranty 1 Year
Labor Warranty 1 Year

Product Research


Micro Four Thirds Mount: The M. Zuiko Digital 45mm f1.8 lens has a Micro Four Thirds mount. It is compatible with the Olympus PEN and OM-D interchangeable lens cameras.

MSC: This high-quality fast portrait lens has a built-in MSC (Movie and Still Compatible) AF drive for fast, quiet focusing, even while shooting movies.

Lens Specifications: The lens has the following specifications:

  • Focal Length: 45mm
  • 35mm Equivalent: 90mm
  • Maximum Aperture: F1.8
  • Minimum Aperture: F22
  • Angle of View: 27°
  • Lens Construction: 9 elements in 8 groups
  • Closest Focusing Distance: 19.7"
  • Filter Diameter: 37mm
  • Dimensions: Diameter=2.213"; Length=2.009
  • Weight: 4.09 ounces

Our Product Research Team

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Product reviews from the Crutchfield Labs

The Olympus 45mm f/1.8 lens features a light-gathering, dimension-enhancing f/1.8 aperture and a perfect length for portrait photography that's equivalent to 90mm on a 35mm camera.

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