Nikon FM

You are standing in a cold field at dawn, your batteries are dead, and the Nikon FM does not care. Every speed from a full second to the top of the dial fires on spring tension alone. The two button cells in the base run the meter and nothing else, so a dead battery costs you the light reading, not the camera. That is the situation this body owns, and an F3 or an FE loses it the moment the cell gives out.

Nikon built the FM in 1977 as the compact mechanical anchor of a new system, the one designed around AI lenses, and it became the camera that taught a generation what a film SLR feels like in the hand. The body is a copper-aluminum alloy block, dense for its size, the kind of weight that reads as quality rather than burden. The shutter is a vertical-travel metal unit that tops out around 1/1000, with flash sync near 1/125. It sounds tight and mechanical, a clean clack with no electronic softness to it. You wind with a real lever and you feel every frame advance.

Focusing happens on a split-image center with a microprism collar, and the finder is bright enough to nail a moving subject without hunting. The meter is the clever part. Instead of a swinging needle, Nikon used GaAsP photodiodes feeding a three-LED stack (plus, circle, minus) on the right side of the frame. You turn the aperture or shutter until the circle glows and you are at the metered exposure. It reads fast in low light, and after decades those LEDs still light up where match needles have long since gone limp.

Here is the honest part. That meter is center-weighted, so it reads mostly for whatever sits in the middle of the frame, and it will mislead you when the important tones live somewhere else. A backlit portrait fools it. So does a snow bank, or a stage lit by one hard source. For scenes like that, an incident or spot reading from the Zone Light Meter app lets you place the shadows on the zone you actually want instead of trusting the FM to weight the center and hope. The body gives you a manual exposure and the discipline to set it. The app gives you the number worth setting.

Today the FM trades cheaper than the FM2 that followed it, and people cross-shop it against the Pentax MX and the Olympus OM-1. The MX is smaller, the OM-1 has a prettier finder, but the FM is the one that just keeps running. Light seals dry out and need a cheap foam replacement, the strip around the mirror box especially, and a high-mileage example may want a CLA. Do that once and the camera will run far longer than you expect. It is the body people hand to a kid learning exposure, and the one many of them keep loading long after.