Glass Bodies a variant-level encyclopedia of vintage lenses and cameras by iwillpat

Pentax Espio Mini

Pentax · Fixed lens · 24×36mm on 35mm film · 1994

Also known as: Pentax Espio Mini · Pentax UC-1 · Pentax UC1 · ペンタックス エスピオミニ

Variants & identification

Variant Mount Years Serial ranges Production
Espio Mini / UC-1 35mm compact 1994–1999 — No figure published, and no Pentax archive page for the model exists online — the specification itself is reconstructed from reviewers and the manual
Date versions 35mm compact 1994 — —
  1. Every specification here is reconstructed. Pentax published no archive page for this camera that could be found, so the lens count, the shutter range and the metering figures come from reviewers working from the manual, not from the maker. They agree with each other; none of them is Pentax.
  2. The reviewers do not flatter it, and the entry should not either. Both 35mmc and Casual Photophile place it a clear step below the Yashica T4 and Olympus mju-II on resolving power and contrast, with softness wide open that the vignetting partly hides; Casual Photophile's answer to 'would I pay $200 for one' is 'probably not'. What it is is the connoisseur's cheap alternative — a 32mm in a body this small, for years unnoticed.
  3. The 1/400 top speed is the specification that bites: on ISO 400 film in sun the programme runs out of shutter and overexposes, and the film speed cannot be overridden to compensate.
How to tell them apart (expand)
  • A triplet at f/3.5 — the humblest optical formula in this section, which is what makes the results reviewers report notable rather than expected
  • Shutter from 2 s to 1/400 s, with a bulb mode from half a second to five minutes; the 1/400 top speed is the specification reviewers complain about
  • DX-coded ISO 25–3200, automatic and not adjustable; daylight-synchro flash EV 9–17 at ISO 100, slow-shutter mode EV 2.6–17
  • About 153 g (5.4 oz) — the size of a cassette case

Espio Mini / UC-1:

  • One camera, two names: UC-1 in the United States, Espio Mini everywhere else
  • Pentax 32mm 1:3.5 — three elements in three groups, a triplet, which every source agrees on and no Pentax document confirms
  • Black, silver or champagne; the champagne is the finish that shows its paint wear

Date versions:

  • Databack fitted, under both names

Specifications

Format
24×36mm on 35mm film
Shutter
electronic programmed leaf shutter · 2 s to 1/400 s, plus bulb from 1/2 s to 5 min (Casual Photophile, from the manual)
Meter
Programmed exposure from DX-read speed, ISO 25–3200, with no manual override of the film speed; slow-shutter mode extends the programme to EV 2.6, daylight-synchro forces the flash at EV 9–17.
Weight
153 g
Country
Japan

What reviewers say

History

The Espio Mini is a triplet. Three elements in three groups, at f/3.5, behind a 32mm focal length — the humblest optical arrangement in this section, in a body about the size of a cassette case, sold in 1994 as the UC-1 in the United States and the Espio Mini everywhere else. That the results are good enough to have earned a following is what makes the camera interesting; a triplet is not supposed to hold its own against the Zeiss Tessar in a Yashica T4.

It does not quite hold its own, and the reviewers who built its reputation are the ones who say so. Casual Photophile finds “tack sharpness, low distortion, strong contrast” and then places the camera a clear step below the T4 and the Olympus mju-II on resolving power and contrast, with softness wide open that the vignetting partly hides. 35mmc says the same from four years earlier. The verdict on the price now asked — “would I pay $200 for one? Probably not” — is on the same page as the praise. What the camera was, for years, was the cheap answer in an argument between expensive ones, valued for being pocketable and unnoticed; the price rose when it stopped being unnoticed.

The specification that bites is the shutter. It runs from two seconds to 1/400, and the film speed is read from the DX code and cannot be overridden — so on ISO 400 film in sun the programme runs out of shutter and overexposes, and there is nothing to be done about it. A bulb mode from half a second to five minutes and a slow-shutter setting extend the other end. The flash has a daylight-synchro mode and red-eye reduction. It came in black, silver and champagne, with date versions under both names, and the champagne is the finish that shows its wear.

Everything in that paragraph is reconstructed. Pentax published no archive page for this camera that could be found, so the lens count, the shutter range and the metering figures come from reviewers working from the manual, not from the maker. They agree with each other. None of them is Pentax, and no production figure exists in any of them.

Expand Collapse

This history is AI-written, from the sources listed at the foot of the page. Where the record is silent it says so rather than filling the gap — but no human wrote these sentences.

Example photos

Sample photo taken with the Pentax Espio Mini
Singapore — shot on a Pentax Espio Mini (David Gann) — David Gann, via Flickr (Openverse) (CC BY-SA 2.0)

Sample photo wanted — shot with a Pentax Espio Mini? We'd love to feature it (with credit).

Live listings

Asking price, USD: a median of $330 across 22 fixed-price listings on 2026-09-06 (middle half $290–$390). First day tracked.

Asking prices from the listings scanned, not sales; junk-flagged rows and auction lots excluded; other currencies are not converted.

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Listings updated 2026-09-05. Links go to the shop or marketplace that carries the item.

Related: Olympus mju-II · Yashica T series · Olympus XA2

Sources (4)

Every page here is assembled from public sources, and the gaps are real ones. If you own this camera, know a serial number I'm missing, or can see where I have it wrong, tell me — corrections, serials and sample photos are all worth having.