Canon EF 200-400mm f/4L IS USM Extender 1.4x

Canon EF 200-400mm f/4L IS USM Extender 1.4x firmware

Canon · EF 200-400mm f/4L IS USM Extender 1.4x · EF 200-400mm f/4L IS USM Extender 1.4x · Lens

Latest firmware for the Canon EF 200-400mm f/4L IS USM Extender 1.4x is v1.1.0 (April 24, 2018).

Specifications

EF 200-400mm f/4L IS USM Extender 1.4x specifications

Focal length
200-400mm
Maximum aperture
F4
Minimum aperture
F32
Type
Zoom Lens
Filter thread
52 mm
Elements / groups
25/20
Aperture blades
9
Closest focus
2 m
Maximum magnification
0.15×
Stabilisation
Yes
Autofocus
Yes
Mount
Canon EF
Weight
3620 g
Dimensions
366 × 128 mm

Changelog

EF 200-400mm f/4L IS USM Extender 1.4x firmware changelog

  1. v1.1.0 first tracked

Firmware history

  1. Version 1.1.0 Latest Released Apr 24, 2018 First seen Jul 10, 2026

    Release notes not published by vendor — see official page.

    Release notes & download

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