Canon 100mm f/3.5 LTM M39 Rangefinder Lens
The Canon 100mm f/3.5 is a 100mm f/3.5 lens designed for Leica Thread Mount (LTM / M39) mount cameras. Used copies start from $128.52 on GearFocus, with buyer protection on every purchase.
Canon 100mm f/3.5 LTM M39 Rangefinder Lens
Used Canon 100mm f/3.5 Listings on GearFocus
Lens Overview — Canon 100mm f/3.5
Key Features — Canon 100mm f/3.5
100mm f/3.5 Prime: A fixed telephoto focal length well-suited to portraiture and general telephoto work on full-frame rangefinder bodies.
Leica Thread Mount (M39): Screw-mount design is compatible with a wide range of vintage rangefinder cameras and can be adapted to modern mirrorless systems.
Full-Frame Coverage: Image circle covers a full 35mm frame, making it usable on both film and digital full-frame bodies.
Manual Focus Only: All-manual focus design suits the deliberate, hands-on shooting style typical of rangefinder photography.
Lightweight Build: Compact and lightweight construction keeps the overall kit easy to carry for extended street or studio use.
40.5mm Filter Thread: Standard screw-in filter compatibility allows the use of UV, polarising, or neutral density filters.
Lens Specifications — Canon 100mm f/3.5
| Spec | Detail |
|---|---|
| Use Cases | Portrait, Street, Creative Effects |
| Lens Type | Prime |
| Format | Full Frame |
| Zoom/Prime | Prime |
| Focal Length | 100mm |
| Maximum Aperture | f/3.5 |
| Camera System | Rangefinder |
| Lens Mount | Leica Thread Mount (LTM / M39) |
| Autofocus | No |
| Focus Type | Manual |
| Image Stabilization | None |
| Filter Thread | 40.5mm |
Description — Canon 100mm f/3.5
The Canon 100mm f/3.5 LTM is a prime telephoto lens designed for rangefinder cameras, mounting via the Leica Thread Mount (LTM / M39) screw interface. It delivers a fixed 100mm focal length with a maximum aperture of f/3.5, and its full-frame image circle coverage ensures it performs across the entire sensor or film area of compatible bodies. Focusing is manual only, consistent with the rangefinder shooting experience.
At 290g, the lens is light enough to carry comfortably all day. The 40.5mm filter thread provides the ability to mount screw-in filters for creative or protective use. With no image stabilization, steady technique or adequate shutter speeds are necessary for sharp results.
Whether used on a classic rangefinder body or adapted to a modern camera, this 100mm prime offers a straightforward telephoto option in a compact and historically significant package.
Pros — Canon 100mm f/3.5
- ✓100mm full-frame prime focal length well-suited to telephoto shooting
- ✓Maximum aperture of f/3.5 provides usable light-gathering capability
- ✓Lightweight at just 290g, making it easy to carry for extended use
Cons — Canon 100mm f/3.5
- ✗Manual focus only — no autofocus capability
- ✗No image stabilization
- ✗Maximum aperture of f/3.5 is relatively modest for a 100mm prime
Videos — Canon 100mm f/3.5
Canon P Review — Analog Insights
Frequently Asked Questions — Canon 100mm f/3.5
What mount does this lens use?+
This lens uses the Leica Thread Mount (LTM / M39) screw mount, which is designed for rangefinder cameras. It can also be adapted to other camera systems using an appropriate M39 adapter.
Does this lens work on full-frame cameras?+
Yes, the lens is specified as covering a full-frame image circle, so it is suitable for use on full-frame rangefinder bodies or full-frame mirrorless cameras with an appropriate M39 adapter.
Does this lens have autofocus or image stabilization?+
No. This is a fully manual focus lens with no autofocus capability, and image stabilization is listed as None. Focusing must be done manually, which is consistent with its rangefinder design.
What filter size does this lens accept?+
The lens has a 40.5mm filter thread. This is a less common filter diameter, so you may need a step-up ring if you wish to use filters from a larger set.
How heavy is this lens?+
The lens weighs 290g, making it a relatively lightweight option for a 100mm telephoto prime, which contributes to a comfortable and portable shooting kit.