Overview Cameras Compatibility Specifications Compare FAQ

Canon EF 300mm F4 L USM Specifications

Next to each category and value, there are articles describing it all, giving you a deeper understanding of every area so you can better understand the strengths and weaknesses of this lens.

Product
Lens Name This is the official name of the lens as listed by the manufacturer.	Canon EF 300mm F4 L USM
Manufacturer The company that designs, manufactures, and markets this lens model.	Canon
Release Date and Price
Release Year The year when this lens model was officially released to the public.	1991
MSRP The Manufacturer's Suggested Retail Price (MSRP) at the time of release.	N/A
Lens Type
Lens Type This defines the category of the lens, such as wide-angle, standard, or telephoto, based on its focal length and usage.	Telephoto
Zoom or Prime This indicates whether the lens has a fixed focal length (prime) or a variable focal length (zoom).	Prime lens (no zoom)
Mount and Compatibility
Mount The type of mount this lens uses, determining which camera systems it is compatible with.	Canon EF
Designed for APS-C sensor Indicates whether the lens is specifically designed for APS-C sensors or is suitable for all sensor types.	No (Suitable for all sensors)
Focus
Autofocus (AF) This indicates whether the lens has autofocus capability.	Yes
Built-in Autofocus (AF) Motor Indicates whether the lens has a built-in autofocus motor.	Yes
Motor Type The type of motor used in the lens for autofocus. Different motor types can affect the speed, noise, and accuracy of focusing.	No information
Focus Method This describes the mechanism by which the lens focuses.	No information
Closest Focusing Distance The minimum distance at which the lens can focus, typically measured in centimeters.	250 cm
Aperture
Maximum Aperture The widest aperture setting of the lens. A lower f-number allows more light to enter, improving low-light performance.	F4
Diaphragm Blades The number of diaphragm blades in the lens, which can affect the quality of bokeh.	No information
Optics
Construction The number of elements and groups in the lens design, which can impact image quality.	8 elements / 7 groups
Special Elements/Coatings Indicates any special lens elements or coatings designed to reduce aberrations and improve image quality.	No information
Focal Length
Focal Length Indicates the range of focal lengths available on this lens. Fixed focal length lenses are known as prime lenses.	300 mm
Zoom Range The range of focal lengths that the lens can cover, expressed in millimeters (mm). A prime lens has a fixed focal length, while a zoom lens covers a range.	None (Prime lens) No Zoom available
Built-in Teleconverter Indicates whether the lens has a built-in teleconverter, which extends the focal length.	No
Teleconverter Multiplier Details the magnification provided by the built-in teleconverter, if applicable.	N/A
Image Stabilization Indicates if the lens has image stabilization, which helps reduce blur caused by camera shake.	No
Image Stabilization CIPA Rating CIPA rating provides a standard measurement of image stabilization effectiveness, in terms of stops.	N/A
Physical
Weather Sealing Indicates whether the lens is sealed against dust and moisture, making it suitable for use in adverse weather conditions.	No
Diameter The diameter of the lens, measured in millimeters.	90 mm
Length The length of the lens, measured in millimeters.	214 mm
Weight The weight of the lens, typically measured in grams (gr).	1165 gr
Other
Filter Type The type of filter the lens supports, if any.	Filter Thread
Filter Diameter The diameter of the filter that fits this lens, measured in millimeters.	77 mm
Lens Hood Indicates whether a lens hood is included with the lens and the type of hood.	Included (Pull Out/Extendable)
Lens Hood SKU The Stock Keeping Unit (SKU) for the lens hood.	N/A
Tripod Collar Indicates whether the tripod collar is included, optional, or not applicable.	Included
Tripod Collar SKU The Stock Keeping Unit (SKU) for the tripod collar, if applicable.	N/A
Motives
Adventure Photography Adventure photography captures outdoor exploration and fast-moving action. Read more
Architectural Photography Architectural photography focuses on buildings, design, and structure. Read more
Astrophotography Astrophotography captures celestial bodies and night skies. Read more
Concert Photography Concert photography captures the energy of live performances. Read more
Documentary Photography Documentary photography tells real-life stories through candid moments. Read more
Editorial Photography Editorial photography supports stories in magazines and publications. Read more
Event Photography Event photography captures special occasions like weddings and parties. Read more
Fashion Photography Fashion photography showcases clothing and style with creative compositions. Read more
Food Photography Food photography highlights the texture and presentation of dishes. Read more
Landscape Photography Landscape photography captures the beauty of nature and vast landscapes. Read more
Micro & Macro Photography Micro photography, often referred to as macro photography, focuses on extreme close-ups of small subjects. Read more
Nature Photography Nature photography captures wildlife and natural landscapes. Read more
Night Photography Night photography captures scenes after dark, including starry skies. Read more
Pet Photography Pet photography focuses on capturing the personality of animals. Read more
Portrait Photography Portrait photography captures the essence of people in controlled settings. Read more
Product Photography Product photography showcases features and details for advertising. Read more
Photojournalism Photojournalism captures real-time events to tell a story. Read more
Sports Photography Sports photography captures fast-paced action in games and competitions. Read more
Street Photography Street photography captures candid moments of daily life in public places. Read more
Travel Photography Travel photography captures the essence of a location, its culture, and people. Read more
Underwater Photography Underwater photography captures life and landscapes beneath the water. Read more
Wedding Photography Wedding photography captures the special moments of a couple’s big day. Read more
Wildlife Photography Wildlife photography captures animals in their natural habitats. Read more