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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. Used copies start from $1,330.08 on GearFocus, with buyer protection on every purchase.

Canon FD 800mm f/5.6 L Lens

Canon FD 800mm f/5.6 L Lens

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Canon FD 800mm f5.6 L Lens 800/5.6

Condition: Good

Product Highlights

  • 800mm Super-Telephoto Lens
  • f/5.6 Maximum Aperture
  • Canon FD Mount
  • Fluorite Elements for High Clarity

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Canon FD 800mm f5.6 L Lens 800/5.6
Canon FD 800mm f5.6 L Lens 800/5.6

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$1,330.08

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Lens Overview — Canon 800mm f/5.6 L

The Canon FD 800mm f/5.6 L is a manual-focus super-telephoto prime lens built for the Canon FD mount system. With a fixed focal length of 800mm and a maximum aperture of f/5.6, this lens is engineered for photographers who demand serious reach in disciplines like wildlife, sports, and nature photography. As a full-frame lens designed for SLR cameras, it brings a level of optical commitment that is reflected in its substantial 4,550g build — a weight that speaks to the physical scale required to deliver 800mm of focal reach in a single prime optic.

The lens is a manual-focus-only design, meaning the shooter takes full control over focus acquisition, which can be a rewarding experience for methodical, deliberate shooting styles. It carries a 48mm filter thread, which given the front element size of an 800mm optic, points to a rear or drop-in filter configuration rather than a conventional front-mounted filter. There is no image stabilization on board, so steady shooting will depend on a robust tripod and head setup.

The Canon FD mount means this lens is native to FD-system SLR bodies, though adapters can open it up to modern mirrorless platforms with the appropriate glass-free or corrective adapter.

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

Canon 800mm f/5.6 L full specifications
SpecDetail
Use CasesWildlife, Sports, Birding
Lens TypeSuper Telephoto
FormatFull Frame
Zoom/PrimePrime
Focal Length800mm
Maximum Aperturef/5.6
Camera SystemSLR
Lens MountCanon FD
AutofocusNo
Focus TypeManual
Image StabilizationNone
Filter Thread48mm

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

Resources & Downloads — Canon 800mm f/5.6 L

Manuals & Guides

Frequently Asked Questions — Canon 800mm f/5.6 L

What camera mount does this lens use?+
This lens is built for the Canon FD mount, designed for Canon FD-system SLR cameras. It is not natively compatible with Canon EF or RF mount bodies, but third-party adapters are available for use on other systems.
Does this lens have autofocus?+
No, the Canon FD 800mm f/5.6 L is a manual-focus-only lens. All focus must be set by the photographer using the focus ring, which requires careful technique at this focal length.
Does this lens have image stabilization?+
No, the specifications confirm image stabilization is listed as None. A sturdy tripod and head are strongly recommended given the 800mm focal length and 4,550g weight.
What is the filter thread size?+
The lens has a 48mm filter thread. On a super-telephoto of this size, filter placement is typically rear or drop-in rather than front-mounted.
What sensor formats is this lens compatible with?+
The lens is specified as a full-frame format lens, meaning it is designed to cover a full-frame image circle on compatible Canon FD SLR bodies. It will also cover smaller sensor formats when adapted.
How heavy is this lens and what does that mean for shooting?+
The lens weighs 4,550g, making it a physically demanding optic to transport and use. Handheld shooting is not practical at this weight and focal length, and a heavy-duty tripod with a suitable ball head or gimbal is essentially required.

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