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EF300mm f/4L 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 300mm f/4L IS USM, not a product family. Family-only evidence is listed as a gap instead of being treated as this SKU.

Specifications

Product name
EF300mm f/4L IS USM - Canon Camera Museum
global.canon/en/c-museum/product/ef340.html hash:4f659432ddfaexact_model
Focal length
300mm
global.canon/en/c-museum/product/ef340.html hash:b4b22af83138exact_model
Maximum aperture
f/4
global.canon/en/c-museum/product/ef340.html hash:4cb7d4b2777dexact_model
Minimum aperture
32
global.canon/en/c-museum/product/ef340.html hash:428f14a41c79exact_model
Weight (g)
1,190
global.canon/en/c-museum/product/ef340.html hash:d18bf31f5bf4exact_model
Filter diameter (mm)
77
global.canon/en/c-museum/product/ef340.html hash:4d8c5ee4c086exact_model
Closest focusing distance (m)
1.5
global.canon/en/c-museum/product/ef340.html hash:0636bdd41d8cexact_model
Diaphragm blades
8
global.canon/en/c-museum/product/ef340.html hash:dba6a4679673exact_model
Lens elements
15
global.canon/en/c-museum/product/ef340.html hash:747979e948a2exact_model
Lens groups
11
global.canon/en/c-museum/product/ef340.html hash:2fe8a21d0694exact_model
Marketed date
March 1997
global.canon/en/c-museum/product/ef340.html hash:1f665378a50eexact_model
Maximum magnification
0.24
global.canon/en/c-museum/product/ef340.html hash:029bcbd8e263exact_model
Original price
198,000 yen (w/case, built-in hood)
global.canon/en/c-museum/product/ef340.html hash:7909ada130edexact_model
Raw spec:maximum diameter x length mm
90 x 221
global.canon/en/c-museum/product/ef340.html hash:f2893a942a00exact_model

Manuals & documents

Owner manual (PDF)
gdlp01.c-wss.com / ef300f4lisusm-im3-eng.pdf
my.canon/en/support/0300345001?model=EF300mm+F4L+IS+USM hash:0b5193572658exact_model
Manual / document
gdlp01.c-wss.com / ef300f4lisusm-im3-eng.pdf
my.canon/en/support/0300345001?model=EF300mm+F4L+IS+USM hash:86a850c915bfexact_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/ef340.html
  • Error codes / Error code table: ABSENT_ON_SOURCE — not found on checked manufacturer sources (not invented)
View technical evidence and source details