Leica · Rangefinder · M39
Leica IIIf (Black Dial)
Ernst Leitz built this one in Wetzlar at the start of the 1950s, and it was the company answering its own success. The screw-mount Barnack Leicas had already rewritten what a 35mm camera could be in the 1930s, but flashbulbs had arrived and the older bodies had no way to sync them. The IIIf was the fix. The black dial version came first, around 1950 to 1952, with the flash-timing numbers engraved in black before Leitz switched to the red-dial scale. That dial is the whole story of the name. It is a small synchronization table for the bulbs of the era, and it sits where you set the fast shutter speeds.
Using one is a lesson in patience that street shooters either love or quit over. There are two viewfinder windows. One squints through a tiny rangefinder patch for focus, the other frames the 50mm field, and you move your eye between them. The patch is small and the magnification is high, which actually makes critical focus precise once your eye learns it. The shutter is cloth, horizontal-travel, and almost silent, a soft click rather than a slap. Speeds run from a full second up to about 1/1000 on top, split across two dials, slow speeds down on the front. Flash sync lands around 1/30.
Then there is loading, which is the part everyone warns you about. You load from the bottom, trimming a longer leader on the film so it feeds past the take-up spool, and the first roll usually ends in quiet swearing. Once you have the trick it becomes muscle memory. The body itself is dense brass and chrome, cold in the hand, small enough to vanish in a coat pocket. It feels machined rather than assembled.
No meter. None. This is a fully mechanical body from before built-in metering was normal on a Leica, so exposure is entirely on you. That is where an incident or spot reading from the Zone Light Meter app earns its place. It is the meter this camera never shipped with, and a quick reading lets you place your shadows on the zone you want before you ever touch the shutter dial. Sunny 16 works in a pinch, but tricky light wants a real number.
People still buy these for two reasons. Some want the cult object, a working piece of mid-century Wetzlar engineering that holds value and looks like nothing else. Others genuinely shoot it, usually street and travel work where the silence and the size matter more than speed. The honest weakness is the workflow itself: slow loading, a fiddly two-window finder, and no light reading at all. Against an M3 it loses on every convenience and wins on price and pocketability. A clean one is not cheap, and a CLA from a Leica specialist costs real money, but a serviced black-dial IIIf will outlive its next three owners.
How the app handles this body
- Metering: Take an incident or spot reading in the app and place your shadows on a chosen zone, then dial that exposure in. On a body with no meter, or one whose cell has drifted with age, the app is the meter you trust.
- Flash sync: Focal-plane shutter, so flash sync tops out around 1/30. Above that the app's exposure pairs still hold for available-light work.