Leica · Rangefinder · M39
Leica IIId
Put a IIId next to a Contax III from the same years and the old quarrel between the two camps starts to make sense. The Contax had a built-in selenium meter and a long-base coupled rangefinder that made focusing fast. The Leica had neither. What the Leica had was a body that worked when it was cold, dropped, or twenty years old, and a shutter so smooth you could shoot in a quiet room and not announce yourself. The IIId is one of the rarest of the screwmount Leicas, a wartime variant built in tiny numbers between 1940 and 1945, essentially a IIIc with the self-timer added, and almost nobody outside a serious collection has ever actually handled one.
The shooting experience is pure barnack Leica, which means it is fiddly and slow on purpose. Two separate eyepieces, one for the rangefinder patch and one for the framing. You squint into the little round window, line up the double image, then move your eye to the other window to compose. Loading is the famous trial: you trim a long leader, feed the film up through the bottom, and hope it caught. People who shoot these have the trim scissors in their bag without thinking about it. The shutter is cloth focal-plane, roughly one second up to about 1/1000, set on two dials, the slow speeds on the front and the fast ones on top.
Build is the reason these bodies have a following. The IIIc family moved to a die-cast body instead of the older fitted shells, so it is a touch longer and genuinely solid, and the brass and steel inside will outlast everything electronic that came after. There is no battery, no meter, no automation of any kind. It is a precise mechanical box that holds film flat and times an exposure, and it does that for decades.
Who shoots one now? Mostly collectors, because the IIId specifically is scarce and priced accordingly. But the people who actually run a barnack body for street work love the discretion. It is small, it is silent, and the M39 mount opens up a century of glass, from the collapsible Elmar to modern screwmount lenses. The honest weakness is the finder. That tiny squinty rangefinder window is slow and dim, and after the M3 arrived in 1954 with its combined bright-line finder, going back to two eyepieces feels like stepping back a generation. It is the reason most people who want a usable Leica skip the screwmounts and buy an M2 instead.
Since there is no meter and never was one, your exposure lives outside the camera entirely. An incident or spot reading from the Zone Light Meter app is how you place the shadows where you want them, then you set the two shutter dials and the lens by hand. Treat the IIId as a shutter and a film holder, bring your own meter, and it does the one job it was built for as reliably as it did when it left Wetzlar.
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 the body X-sync speed. Above that the app's exposure pairs still hold for available-light work.