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EF400mm f/5.6L USM

Cameras — Lens · Canon

Provenance-backed · 16 cited reservoir facts

Each claim below is grounded in manufacturer or OEM sources and shows its citation. Missing evidence is listed as a gap — not invented.

This page is for the exact model Canon EF 400mm f/5.6L USM, not a product family. Family-only evidence is listed as a gap instead of being treated as this SKU.

Specifications

Product name
EF400mm f/5.6L USM - Canon Camera Museum
global.canon/en/c-museum/product/ef317.html hash:f0c8575c40abexact_model
Focal length
400mm
global.canon/en/c-museum/product/ef317.html hash:bbf073cc6b8bexact_model
Maximum aperture
f/5.6
global.canon/en/c-museum/product/ef317.html hash:2d816c0509c5exact_model
Minimum aperture
32
global.canon/en/c-museum/product/ef317.html hash:6b314fca410fexact_model
Weight (g)
1,250
global.canon/en/c-museum/product/ef317.html hash:923e0c5eedfdexact_model
Filter diameter (mm)
77
global.canon/en/c-museum/product/ef317.html hash:76613deb50b1exact_model
Closest focusing distance (m)
3.5
global.canon/en/c-museum/product/ef317.html hash:9a583cb2e1e3exact_model
Diaphragm blades
8
global.canon/en/c-museum/product/ef317.html hash:d895691b6c8fexact_model
Lens elements
7
global.canon/en/c-museum/product/ef317.html hash:e216198fa2ceexact_model
Lens groups
6
global.canon/en/c-museum/product/ef317.html hash:edbf480e0d56exact_model
Marketed date
May 1993
global.canon/en/c-museum/product/ef317.html hash:f18955b03285exact_model
Maximum magnification
0.11
global.canon/en/c-museum/product/ef317.html hash:abedd3f66d2fexact_model
Original price
185,000 yen (w/case)
global.canon/en/c-museum/product/ef317.html hash:5076ce479821exact_model
Raw spec:maximum diameter x length mm
90 x 256.5
global.canon/en/c-museum/product/ef317.html hash:753139108b06exact_model

Manuals & documents

Owner manual (PDF)
gdlp01.c-wss.com / ef400f56lusm-im3-eng.pdf
my.canon/en/support/0300346501?model=EF400mm+F5.6L+USM hash:2f272d78338fexact_model
Manual / document
gdlp01.c-wss.com / ef400f56lusm-im3-eng.pdf
my.canon/en/support/0300346501?model=EF400mm+F5.6L+USM hash:e7a947023a87exact_model

Known gaps (not invented)

These attributes were checked on authoritative sources and were not found (ABSENT_ON_SOURCE). ProductSlope does not invent values for them.

  • Compatibility / Body / teleconverter matrix: ABSENT_ON_SOURCE — not found on checked manufacturer sources (not invented) — checked: global.canon/en/c-museum/product/ef317.html
  • Error codes / Error code table: ABSENT_ON_SOURCE — not found on checked manufacturer sources (not invented)
View technical evidence and source details