Konica's 1989 AF compact — 34mm f/4.5, infrared AF, DX 100-400, CR123 power.
The MT-100 was a fixed-lens autofocus 35mm compact launched by Konica in 1989, a plain black point-and-shoot pitched at everyday snapshot duty below the brand's Z-up zoom series and the better-known Big Mini line that followed.
It carries a 34mm f/4.5 Konica lens focused by a twin-sensor infrared autofocus system from 1.2m to infinity. An electronically controlled shutter runs from 2 seconds to 1/500, with a CdS cell driving program auto-exposure. DX coding sets ISO 100, 200 or 400 (defaulting to 100), and the built-in flash covers 1.2-3.4m at ISO 100 with roughly four-second recycling. It measures 118x69x47.5mm, weighs 220g without battery and runs on a CR123 lithium cell.
It is a straightforward, light companion camera for casual and street shooting: wide-ish lens, dependable automation, nothing to adjust. The modest flash range and 1.2m minimum focus set its limits indoors and for close subjects.
Test with a CR123 fitted — the camera is entirely battery-dependent — confirming autofocus, motor wind and flash all operate. Check the battery compartment for corrosion and the film-door light seals for crumbling foam; prices are low, so clean working examples are worth holding out for.