ProductSlope
Knowledge Ask Search All products Chinese

EF400mm f/4 DO IS 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/4 DO IS 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/4 DO IS USM - Canon Camera Museum
global.canon/en/c-museum/product/ef366.html hash:39abb0ae0a5dexact_model
Focal length
400mm
global.canon/en/c-museum/product/ef366.html hash:f85f6e01dd20exact_model
Maximum aperture
f/4
global.canon/en/c-museum/product/ef366.html hash:3b4285eb0d4fexact_model
Minimum aperture
32
global.canon/en/c-museum/product/ef366.html hash:c68363fb46ffexact_model
Weight (g)
1,940
global.canon/en/c-museum/product/ef366.html hash:8db3bf255f7fexact_model
Filter diameter (mm)
52
global.canon/en/c-museum/product/ef366.html hash:03df17dc398dexact_model
Closest focusing distance (m)
3.5
global.canon/en/c-museum/product/ef366.html hash:ac05d615cf67exact_model
Diaphragm blades
8
global.canon/en/c-museum/product/ef366.html hash:8b2ddb84780bexact_model
Lens elements
17
global.canon/en/c-museum/product/ef366.html hash:d8837fd54831exact_model
Lens groups
13
global.canon/en/c-museum/product/ef366.html hash:684fa2c37f83exact_model
Marketed date
December 2001
global.canon/en/c-museum/product/ef366.html hash:156c6c4bca15exact_model
Maximum magnification
0.12
global.canon/en/c-museum/product/ef366.html hash:55295aef3ea2exact_model
Original price
770,000 yen (w/case)
global.canon/en/c-museum/product/ef366.html hash:cb0fd54e5fc7exact_model
Raw spec:maximum diameter x length mm
128 x 232.7
global.canon/en/c-museum/product/ef366.html hash:45de8e927b77exact_model

Manuals & documents

Owner manual (PDF)
gdlp01.c-wss.com / ef400f4doisusm-im3-eng.pdf
my.canon/en/support/0300346001?model=EF400mm+F4+DO+IS… hash:3c60163230e3exact_model
Manual / document
gdlp01.c-wss.com / ef400f4doisusm-im3-eng.pdf
my.canon/en/support/0300346001?model=EF400mm+F4+DO+IS… hash:264a5896510bexact_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/ef366.html
  • Error codes / Error code table: ABSENT_ON_SOURCE — not found on checked manufacturer sources (not invented)
View technical evidence and source details