Canon EF 200-400mm f/4 L IS USM Extender 1.4x vs Canon EF 400mm F2.8 L IS III USM

This is a full comparison between the lenses Canon EF 200-400mm f/4 L IS USM Extender 1.4x and Canon EF 400mm F2.8 L IS III USM.

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Product
Canon EF 200-400mm f/4 L IS USM Extender 1.4x
Canon EF 400mm F2.8 L IS III USM
Name Canon EF 200-400mm f/4 L IS USM Extender 1.4x Canon EF 400mm F2.8 L IS III USM
Manufacturer Canon Canon
SKU 5176B002
Release Date and Price
Canon EF 200-400mm f/4 L IS USM Extender 1.4x
Canon EF 400mm F2.8 L IS III USM
Release Year 2013 2018
Release Date 2013-05-14 2018-09-05
MSRP N/A N/A
Last known price 11099 USD 9999 USD
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Lens Type
Canon EF 200-400mm f/4 L IS USM Extender 1.4x
Canon EF 400mm F2.8 L IS III USM
Lens Type Telephoto
Supertelephoto
Telephoto
Supertelephoto
Zoom or Prime Zoom lens Prime lens (no zoom)
Mount and Compatibility
Canon EF 200-400mm f/4 L IS USM Extender 1.4x
Canon EF 400mm F2.8 L IS III USM
Mount Canon EF Canon EF
Designed for APS-C sensor No (Suitable for all sensors) No (Suitable for all sensors)
Focus
Canon EF 200-400mm f/4 L IS USM Extender 1.4x
Canon EF 400mm F2.8 L IS III USM
Autofocus (AF) Yes Yes
Built-in Autofocus (AF) Motor Yes Yes
Motor Type Ring-Type Ultrasonic Ring-Type Ultrasonic
Focus Method No information No information
Closest Focusing Distance 200 cm 250 cm
Maximum Magnification 0,15 0,17
Aperture
Canon EF 200-400mm f/4 L IS USM Extender 1.4x
Canon EF 400mm F2.8 L IS III USM
Maximum Aperture F4 F2,8
Diaphragm Blades 9 9
Optics
Canon EF 200-400mm f/4 L IS USM Extender 1.4x
Canon EF 400mm F2.8 L IS III USM
Construction 25 elements  /  20 groups 17 elements  /  13 groups
Special Elements/Coatings Fluorite and Ultra-Low dispersion glass elements, Sub-Wavelength Structure Coating and Super Spectra Coating Super UD + fluorite elements + Air Sphere + Super Spectra + fluorine coatings
Focal Length
Canon EF 200-400mm f/4 L IS USM Extender 1.4x
Canon EF 400mm F2.8 L IS III USM
Focal Length 200-400 mm 400 mm
Zoom Range 200 mm None (Prime lens)
No Zoom available.
Built-in Teleconverter Yes No
Teleconverter Multiplier 1.4x N/A
Image Stabilization Yes Yes
Image Stabilization CIPA Rating 4 stops 5 stops
Physical
Canon EF 200-400mm f/4 L IS USM Extender 1.4x
Canon EF 400mm F2.8 L IS III USM
Weather Sealing Yes Yes
Diameter 128 mm 163 mm
Length 366 mm 343 mm
Weight 3620 gr 2840 gr
Other
Canon EF 200-400mm f/4 L IS USM Extender 1.4x
Canon EF 400mm F2.8 L IS III USM
Filter Type Drop-in Filter Drop-in Filter
Filter Diameter 52 mm 52 mm
Lens Hood Included Included
Lens Hood SKU ET-120 (WII) ET-155 (WIII)
Tripod Collar Included Included
Tripod Collar SKU N/A N/A