Canon EF 300mm f/4 L USM Lens Specifications and Measurements

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Specifications	Canon EF 300mm f/4 L USM Lens
Focal Length Range	300mm
APS-C Sensor DSLRs Only?	N
Lenses / Groups
Angle of View: Diagonal
Angle of View: Horizontal
Angle of View: Vertical

Aperture
Aperture Range - Wide / Long	f/4.0-32
Number of Aperture Blades
Rounded Aperture?

Weight
Manufacturer Specification Weight
Actual Weight
Lens Hood Weight
In-Use Weight

Size
Manufacturer Spec Size (DxL)	0 x 0mm
Measured Size (DxL)
Max Length at Full Extension
Internal Zoom? / Extends with Zoom?
Internal Focusing? / Extends with Focusing?	/ N
Lens Hood Size (DxL)
Lens Length with Hood (Min / Max)
Size of Rings - Zoom / Focus	/
Filter Size	77mm
Front Element (Filter Mount) Rotates	N

Focus
AF Motor Type
Full Time Manual Focus	Y
Focus Limiter? / Focus Limiter Ranges
Distance Info Provided to Camera?	Y
Distance Scale? / Type	Y / Window

Close Focus
Specified Min Focus Distance
Tested Min Focus Distance (Wide / Long)
Maximum Magnification (MM)
MM with 12mm Extension Tube
MM with 25mm Extension Tube
MM with 250D Closeup Lens
MM with 500D Closeup Lens

Features
Tripod Ring Included? / Removable?	Y /
Zoom Ring Lock Switch?	N
Lens Hood Included / Model?	Y / Integrated
Weather Sealed? / Filter Required?	P / Y
Image Stabilization? / Stops? / Tripod Sensing?	N
Metal Mount?	Y
Extender Compatible?	Y
Case Included? / Type?	Y /
1200mm x 800mm Subject Framing Distance

History
Year Introduced	1991