Pentax MZ-3 (ZX-3)

Picture a photographer on a wet cobblestone street at dusk, coat collar up, turning a shutter dial with a gloved thumb. That is the MZ-3's whole pitch. Pentax built an autofocus SLR in 1997 and then dressed it like a 1976 ME, with a real shutter-speed dial on top and an exposure-compensation collar around it. You set the speed with your fingers and read the aperture in the finder. It feels like a manual camera that happens to focus itself when you let it.

The body is tiny and light, plastic over a metal chassis, and it disappears in a jacket pocket in a way no Nikon F100 ever will. The finder is a real glass pentaprism, about 0.8x magnification and 92 percent coverage, bright enough for the street though noticeably smaller than the old ME and LX prisms the styling pays homage to. Autofocus runs off three sensors and is quick for the era. The meter is the good part: TTL through the lens with a six-segment matrix, plus center-weighted and a true spot, switchable on the body. Drive modes include a self-timer and two-step auto bracketing right on the dial. Top shutter speed is around 1/4000, which is the headline difference from the slower MZ-5n it sits above, and flash sync lands at 1/120.

It runs entirely on two CR2 cells, so it is dead without them, no mechanical backup at all. That is the modern compromise. In trade you get aperture priority that just works, a spot meter for slide film, and the whole Pentax K mount behind it. Mount a 50mm f/1.4 or one of the Limited primes (the 43mm, the 77mm) and the package punches absurdly above its size and weight.

Here is the honest weakness, and every MZ owner knows it. The series is famous for a small plastic gear in the mirror mechanism that strips with age. When it goes, the mirror sticks up and the shutter stops firing, and the camera bricks itself, and a repair is rarely worth the cost on a body this cheap. Plenty of MZ-3s have run for decades without trouble, but it is a lottery. Buy a working one, shoot it, and do not count on a CLA economy existing for it.

For all that, it is one of the best-feeling small autofocus SLRs ever made, and it stays cheap precisely because buyers fear the gear. People who want F100 handling in an ME-sized shell cross-shop it against the Nikon FE and the Olympus OM-4, and the MZ-3 wins on size every time. When you point it into a backlit window or a stage lit from one side, do not trust the matrix average. Take an incident or spot reading from the Zone Light Meter app, decide where you want the shadows to fall, and set that exposure with the dial yourself. The body gives you full manual control for exactly this reason. Use it.