A Telephoto Prime for Your m39 Screw-Mount Camera
The Leica Leitz 13.5cm f/4.5 is a compact telephoto lens that brings distant subjects closer on your Leica screw-mount camera. It comes with an adapter that lets you mount it directly to the m39 thread, so you don't need to hunt for a separate adapter. This guide walks through what the listing confirms, how to check the lens before shooting, and what to expect when you start using it.
What the Listing Confirms
- Used Leica Leitz 13.5cm f/4.5 Lens with Adapter for m39 (#197037CM): This is a used Leica Leitz 13.5cm f/4.5 lens supplied with an adapter for m39 screw mount use. The lens is ready to mount on any m39 screw-mount camera body without needing to buy a separate adapter. The adapter is included, saving you time and cost.
Used Leica Leitz 13.5cm f/4.5 Lens with Adapter for m39 (#197037CM) - Used Leica Leitz 13.5cm f/4.5 Lens with Adapter for m39 (#197037CM): Brand: Leitz Canada. Fits the Leica m39 screw mount category. Leitz Canada produced lenses to Leica's specifications, so build quality and optical design are consistent with the Leica standard. Knowing the brand helps when researching lens history or compatibility.
Mounting and Setup Steps
Before you attach the lens, verify that the m39 adapter is clean and that the threads on both the lens and camera body are free of debris. Grit or old lubricant can cause cross-threading.
Screw the adapter onto the lens first, then mount the assembly onto the camera body. This ensures a secure fit and reduces stress on the camera's mount threads.
Rotate the lens gently until it seats fully. Do not force it. If resistance is felt, stop and inspect the threads.
- Inspect the adapter and threads: Check for dirt, damage, or corrosion. A clean connection is essential for proper infinity focus and aperture coupling.
- Mount the adapter to the lens first: Screw the adapter onto the lens firmly but not overtightened. Then attach the whole assembly to the camera body.
- Test focus and aperture movement: Turn the focusing ring through its full range. It should move smoothly without binding. Open and close the aperture blades to confirm they operate correctly.
Shooting with the 13.5cm f/4.5 on Film
At f/4.5, this is not a fast lens, so you'll need good light or a tripod for handheld shots. The telephoto perspective compresses the scene, making it great for portraiture, street photography from a distance, or isolating details in landscapes.
Because the lens is designed for the m39 screw mount, infinity focus should be accurate when the lens is properly seated. Check a few distant subjects at infinity to confirm sharpness. If infinity is not reached, the adapter may not be fully seated.
The lens is manual focus and manual aperture, so you control everything. Use your camera's built-in meter or a handheld meter to set exposure. At f/4.5, depth of field is shallow enough to separate subjects from the background, but wide enough to keep group shots in focus with careful focusing.
What to Check Before You Buy
Since the lens is used, inspect the glass for haze, fungus, or scratches. The listing does not specify optical condition, so ask the seller for details if not stated. Check that the aperture ring clicks into each f-stop and that the blades are free of oil.
The adapter is included, but verify it is the correct m39 type. Some adapters are designed for specific cameras and may not fit all m39 bodies. If you have a Leica IIIf, IIIg, or similar screw-mount body, this lens should work, but confirm compatibility with your specific camera model.
