Olympus mju I (Stylus in the US)


Olympus mju I (Stylus in the US)

Olympus mju I


The Olympus mju or mju I (Stylus in the US) was released in 1991, a fully automatic 35mm film camera. It was a new design by Yoshihisa Maitani, the chief camera designer of Olympus since the 1950s, who developed a number of legendary cameras like the Pen, the OM series and the XA. It inherited the round design and the sliding cover from the XA. Small and lightweight, it has even an integrated flash. Its successor was the mju II in 1997. The mju was first built in Japan, later it was assembled in China with Japanese parts and called mju I when more models of the series were launched. Its main features are:

Features and Operation

Its main features are:

35mm F3.5 lens, 3 elements in 3 groups, autofocus with focus lock, min. focus 0,35m (!)
Electronic shutter, 1/15-1/500s, flash ready and focus o.k. indication in the viewer window
Size 117x63x37, Weight 170 gr. without battery
50-3200 ISO, automatic DX coding, self-timer, automatic film advance and (re-)spooling

The camera has 4 flash modes: auto-flash (default), auto-s (red eye reduction), off, fill-in flash. If you slide the cover open, remember that  it's default auto flash every time and it's 2 pushes for off. Flash guide number ~12 (m/ISO 100)

This camera is easy to use. Autofocus is responsive and works well. Putting a film is easy as well, open the back, tear the film leader a bit further, drop the film and that's it. The camera spools the film automatically. As with most point and shoot ultra compacts, auto flash is set at start.

The mju I is a good point and shoot camera. Sharp images, good autofocus, in a tiny little camera. Its round design makes it easy to stow it into a pocket. When was released, it was a top model. Photos have a very good contrast. It has a tendency to use flash even in daylight if not set to flash off, but it gets exposure right in both cases. The mju II six years later is nevertheless better: low-light capacity, a still smaller body, water-protection.

Where to Find an Olympus mju I

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The Olympus µ[mju:] (US: ∞ Stylus) was a fully automatic 35mm compact camera introduced by Olympus in 1991. The Stylus was the first model in the hugely successful Olympus mju/Stylus series, selling 5 million on its own[1].

Evolved by camera designer Maitani Yoshihisa[2] from his Olympus XA design, the µ[mju:] was very small and curvy, with an integrated lens cover. It is switched on by shifting the lens cover to one side. The original mju/Stylus was generally available in black, but a LIMITED edition model (50,000 examples) with a metallic silver finish was also released. 1992 saw the release of the Olympus µ[mju:] PANORAMA. This utilized tiny magnets to move a mask in front of the film in the middle of the roll, while keeping the body and basic spec unchanged.

Some versions of the mju actually say µ[mju:]-1 on the front.[3]

The technological specifications of this camera formed the basis of a retro-styled limited edition "concept" camera called the Ecru.


  • Lens: 35mm, f/3.5 (3 elements in 3 groups).
  • Active multi-beam autofocus with 100-steps for a huge range of distances. Pre-focus lock enabled.
  • Film format: 35mm DX-coded film, ISO 50-3200.
  • Automatic exposure with shutter speeds of 1/15-1/500s.
  • Self-timer.
  • Film advance: Autowind and rewind.
  • Integrated flash with four modes: Auto, red eye reduction, fill-in, disabled.
  • LCD with battery check and frame counter.
  • Tripod Mount.
  • Power: 3V lithium CR123A.


  1. Sales claimed by Olympus. (archived)
  2. The name is given in the Japanese order, with family name followed by the given name.
  3. An example from Alf Sigaro on Flickr.


Olympus Classic Cameras
Semi | Semi II | Six | Chrome Six | Flex | Standard | 35 | Ace | Pen | Pen F | FTL | OM-1/2/3/4 | OM-10/20/30/40 | Trip | µ (mju:) | XA

Check out this camera on Instagram #olympusmju

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This post was created with information kindly contributed by 135Compact

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