Canon FD 800mm f/5.6 L Lens
The Canon 800mm f/5.6 L is a 800mm f/5.6 lens designed for Canon FD mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.
Canon FD 800mm f/5.6 L Lens
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Lens Overview — Canon 800mm f/5.6 L
Key Features — Canon 800mm f/5.6 L
800mm Prime Focal Length: A fixed 800mm focal length delivers extreme subject reach for wildlife, sports, and nature photography without the optical compromises of a zoom design.
f/5.6 Maximum Aperture: A fast maximum aperture for a lens of this focal length, allowing usable shutter speeds in moderate light at long distances.
Canon FD Mount: Designed natively for Canon FD-mount SLR bodies, with adapter compatibility available for use on modern mirrorless systems.
Full-Frame Coverage: Designed to cover a full-frame image circle, ensuring no vignetting or crop factor on compatible FD-mount film bodies.
Drop-In Filter System: Uses a rear drop-in filter configuration — a practical solution for adding filtration to a lens with a very large front element.
Manual Focus Only: A fully manual focus design gives the shooter direct, deliberate control over focus acquisition — suited to methodical shooting at fixed distances.
Lens Specifications — Canon 800mm f/5.6 L
| Spec | Detail |
|---|---|
| Use Cases | Wildlife, Sports, Birding |
| Lens Type | Super Telephoto |
| Format | Full Frame |
| Zoom/Prime | Prime |
| Focal Length | 800mm |
| Maximum Aperture | f/5.6 |
| Camera System | SLR |
| Lens Mount | Canon FD |
| Autofocus | No |
| Focus Type | Manual |
| Image Stabilization | None |
| Filter Thread | 48mm |
Description — Canon 800mm f/5.6 L
The Canon FD 800mm f/5.6 L is a prime super-telephoto lens built for the Canon FD mount on full-frame SLR cameras. Its 800mm fixed focal length and f/5.6 maximum aperture position it as a serious tool for photographers who need extreme reach from a dedicated optic. Focusing is entirely manual, putting the photographer in direct control of every shot — a workflow that suits patient, methodical shooters working from a fixed position.
The lens weighs in at 4,550g, which reflects the engineering required to deliver 800mm of focal length in a single prime design, and tripod use is a practical necessity at this size. A 48mm filter thread is provided for filtration options. There is no image stabilization, so exposure discipline and a stable support system are essential to achieving sharp results.
The Canon FD mount connects this lens to Canon's legacy SLR ecosystem, and with the appropriate adapter, it can also find new life on contemporary mirrorless camera platforms.
Pros — Canon 800mm f/5.6 L
- ✓Impressive 800mm fixed focal length delivers extreme subject reach for a prime lens
- ✓Maximum aperture of f/5.6 is well-suited for a super-telephoto of this focal length
- ✓Full-frame coverage ensures no crop factor concerns on compatible FD-mount SLR bodies
Cons — Canon 800mm f/5.6 L
- ✗Manual focus only — no autofocus support, which can be challenging at 800mm for fast-moving subjects
- ✗At 4,550g, this lens requires dedicated tripod support and is not suited for handheld use
- ✗No image stabilization, increasing the importance of a stable shooting platform
Videos — Canon 800mm f/5.6 L
A Practical Review: Canon 800mm f/5.6 Lens — Jim Goldstein