Olympus PEN EE, D.Zuiko 28mm f/3.5

Olympus Pen EE  D.Zuiko 28mm f/3.5 

The Olympus D.Zuiko 28mm f/3.5, serial number 378854, is a wide-angle prime lens designed for the Olympus Pen half-frame cameras, such as the Pen EE series or the Pen F (if adapted appropriately). The “D” designation refers to a 4-element lens construction, and the 28mm focal length on a half-frame format provides a standard field of viewroughly equivalent to 40–45mm on full-frame, making it a versatile everyday lens.

This lens is known for its compact size, sharpness, and classic rendering, with excellent performance in well-lit conditions.

Key Features

• Focal Length: 28mm (approximately 40–45mm equivalent on half-frame format)

• Maximum Aperture: f/3.5

• Mount: Olympus Pen – fixed mount on some models; not interchangeable unless removed from a donor body

• Lens Construction: 4 elements in 3 groups (D-Zuiko = 4 elements)

• Aperture Range: Typically f/3.5 to f/22

• Focus Type: Often fixed-focus or zone focus (depending on camera body)

• Coating: Single-coated glass for improved contrast

• Application: Originally built-in on Olympus Pen cameras; collectible and usable with modification

What’s Included

• Olympus D.Zuiko 28mm f/3.5 lens (Serial No. 378854), possibly attached to an Olympus Pen body
  

Condition

Used – Good condition

• Optics: Clean glass; no haze, fungus, or major scratches. Light dust may be present

• Aperture Blades: Clean and oil-free (if accessible)

• Exterior: Minor wear consistent with age; engravings clear and intact