Canon EF 300mm F2.8 L USM vs Canon EF 75-300mm F4-5.6 III

This is a full comparison between the lenses Canon EF 300mm F2.8 L USM and Canon EF 75-300mm F4-5.6 III.

Compare Specifications

Product
Canon EF 300mm F2.8 L USM
Canon EF 75-300mm F4-5.6 III
Name Canon EF 300mm F2.8 L USM Canon EF 75-300mm F4-5.6 III
Manufacturer Canon Canon
SKU
Release Date and Price
Canon EF 300mm F2.8 L USM
Canon EF 75-300mm F4-5.6 III
Release Year 1987 1999
Release Date
MSRP N/A 199 USD
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Lens Type
Canon EF 300mm F2.8 L USM
Canon EF 75-300mm F4-5.6 III
Lens Type Telephoto Telephoto
Zoom or Prime Prime lens (no zoom) Zoom lens
Mount and Compatibility
Canon EF 300mm F2.8 L USM
Canon EF 75-300mm F4-5.6 III
Mount Canon EF Canon EF
Designed for APS-C sensor No (Suitable for all sensors) No (Suitable for all sensors)
Focus
Canon EF 300mm F2.8 L USM
Canon EF 75-300mm F4-5.6 III
Autofocus (AF) Yes Yes
Built-in Autofocus (AF) Motor Yes Yes
Motor Type No information No information
Focus Method No information No information
Closest Focusing Distance 300 cm 150 cm
Maximum Magnification
Aperture
Canon EF 300mm F2.8 L USM
Canon EF 75-300mm F4-5.6 III
Maximum Aperture F2,8 F4-5,6
This lens has a variable aperture at different focal lengths.
F4 at 75 mm
F5,6 at 300 mm
Variable Aperture
Diaphragm Blades No information No information
Optics
Canon EF 300mm F2.8 L USM
Canon EF 75-300mm F4-5.6 III
Construction 10 elements  /  8 groups 13 elements  /  9 groups
Special Elements/Coatings No information No information
Focal Length
Canon EF 300mm F2.8 L USM
Canon EF 75-300mm F4-5.6 III
Focal Length 300 mm 75-300 mm
Zoom Range None (Prime lens)
No Zoom available.
225 mm
Built-in Teleconverter No No
Teleconverter Multiplier N/A N/A
Image Stabilization No No
Image Stabilization CIPA Rating N/A N/A
Physical
Canon EF 300mm F2.8 L USM
Canon EF 75-300mm F4-5.6 III
Weather Sealing No No
Diameter 125 mm 71 mm
Length 253 mm 122 mm
Weight 2855 gr 480 gr
Other
Canon EF 300mm F2.8 L USM
Canon EF 75-300mm F4-5.6 III
Filter Type Drop-in Filter Filter Thread
Filter Diameter 48 mm 58 mm
Lens Hood Included Not Included
Lens Hood SKU N/A ET-60
Tripod Collar Included N/A
Tripod Collar SKU N/A N/A