• Canon EF 600mm f4 L IS III USM - 409717
  • Canon EF 600mm f4 L IS III USM - 409717
  • Canon EF 600mm f4 L IS III USM - 409717
  • Canon EF 600mm f4 L IS III USM - 409717
  • Canon EF 600mm f4 L IS III USM - 409717
  • Canon EF 600mm f4 L IS III USM - 409717
  • Canon EF 600mm f4 L IS III USM - 409717
  • Canon EF 600mm f4 L IS III USM - 409717
  • Canon EF 600mm f4 L IS III USM - 409717
  • Canon EF 600mm f4 L IS III USM - 409717

Canon EF 600mm f4 L IS III USM - 409717

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Canon EF 600mm f4 L IS III USM - 409717

The Canon EF 600mm f/4L IS III USM is a professional-grade super telephoto lens designed for sports and wildlife photography. Its advanced optical construction, featuring fluorite, Super UD, and aspherical elements, minimizes chromatic and spherical aberrations for exceptional sharpness and color accuracy. The lens incorporates Super Spectra and Air Sphere Coatings to reduce flare and ghosting, ensuring clear images even in challenging lighting. Lightweight and responsive, it offers fast, intuitive handling to capture decisive moments with precision and clarity.

What our Experts Think
  • Elite professional super-telephoto prime
    The Canon EF 300 mm f/2.8L IS II USM is widely regarded as one of Canon’s top-tier telephoto lenses, combining exceptional optical quality with professional-grade performance.
  • Fast f/2.8 aperture for action and low light
    The wide f/2.8 maximum aperture gives excellent subject isolation and strong performance in dim conditions, helping freeze motion and create smooth background blur.
  • Outstanding image quality & stabilization
    With advanced optics and ≈4 stops of Image Stabilization, this lens delivers sharp, high-contrast images even handheld at long focal lengths.
  • Professional autofocus performance
    The ring-type USM system offers fast, accurate, and quiet autofocus with full-time manual override—ideal for tracking fast subjects in sports and wildlife.
  • Robust build for demanding use
    Rugged L-series construction and weather sealing make it reliable in challenging field conditions and long shoots.
  • Teleconverter friendly
    Many pros use this lens with 1.4x and 2x teleconverters, preserving strong autofocus and image quality for extended reach.
  • Community praise & legacy
    Photographers often note the noticeable improvement of the Mark II over earlier versions, especially in autofocus speed and handling, making it a go-to choice for serious shooters.

Q&A

Q: What is the Canon EF 300mm f/2.8L IS II USM?
A: A professional super-telephoto prime lens with a fast f/2.8 aperture, advanced image stabilization, and USM autofocus for Canon EF-mount full-frame DSLRs—ideal for demanding action photography.

Q: What are the standout optical and performance features?
A: It’s known for excellent sharpness, strong contrast, and reliable 4-stop IS, plus rugged build quality and fast, accurate autofocus thanks to a ring-type USM motor.

Q: How does the f/2.8 aperture help?
A: The bright f/2.8 maximum aperture lets you freeze fast motion, shoot in lower light, and achieve beautiful background blur (bokeh)—critical for sports and wildlife.

Q: Is this lens good for handheld shooting?
A: Yes—its image stabilization system provides up to ~4 stops of shake reduction, making handheld telephoto shooting more manageable.

Q: What photography styles is it best for?
A: Ideal for sports, wildlife, aviation, and fast-action photography where reach, speed, and sharpness matter most.

Q: How is autofocus performance?
A: The ring USM delivers fast, smooth, and reliable autofocus with full-time manual override.

Q: Any user insights from the community?
A: Photographers report that older EF super-telephoto lenses still perform well on modern mirrorless bodies with adapters, though servicing and parts for vintage versions can be limited.

Q: Should I buy this lens?
A: Yes—if you need a top-tier professional telephoto prime that excels in challenging lighting and action scenarios with superb optics and stabilization.


Maintenance Tips
  • Front Element Protection (Critical): Always keep hood and cap on when not in use; clean only with blower + microfiber cloth.
  • Lens Support Mandatory: Always use the tripod collar or gimbal—never stress the camera mount due to extreme size and weight.
  • IS System Care: Turn off Image Stabilization when mounted on a stable tripod to reduce internal wear.
  • Moisture & Dust Protection: Store in a dry cabinet with silica gel to prevent fungus and internal haze.
  • Transport Safety: Use a professional-grade, shock-resistant padded case for travel and field use.
  • Field Cleaning Routine: After outdoor shoots, gently clean barrel, switches, and seams to remove dust and sand.
  • Temperature Acclimation: Avoid sudden temperature changes to prevent internal condensation.
  • Contact Care: Lightly clean electronic contacts for stable autofocus and IS performance.
  • Focus System Care (USM): Avoid forcing the focus ring; allow smooth electronic control only.

  • DIY Install

  • OEM-Inspired Fit

  • Air Bag Friendly

  • 3 Year Warranty

  • Custom Colors

  • Work Gear & Pet Friendly

  • Since 2009

Why Truck Owners Choose Seat Covers Over Reupholstery

Traditional Reupholstery TruckLeather Seat Covers
Upfront Cost

$2500-$4000+

$399-$999

Vehicle Downtime

Days or Weeks

None

Risk Level

Permanent, No Undo

Fully Reversible

Best Use Case

Full Restorations

Restoration or Prevention

Resale Value Impact

High Cost to Recover

High ROI

TruckLeather gives you 90% of the visual and comfort upgrade at a fraction of the cost of reupholstery without giving up your truck.

WHEN YOUR TRUCK DESERVES THE BEST. UPGRADE YOUR TRUCK'S INTERIOR WITH THE INDUSTRY DEFINING TRUCK SEAT COVERS WE HAVE REFINED OVER 15 YEARS.

  • Will these work if my seats are already damaged?

    Yes. TruckLeather seat covers are commonly used to cover cracked, faded, or worn-out truck seats while preventing further deterioration.

  • How do these compare to cheaper seat covers?

    Universal covers focus on price. TruckLeather focuses on fit, durability, and long-term protection.

  • Are these permanent?

    No. They’re fully removable and won’t alter your factory seats.

Slip on leather seat covers
Slip on leather seat covers

Easy At-Home Installation

No special tools. No upholstery shop. No risk.

Our seat covers are designed for DIY installation, with step-by-step instructions and support available if you need it. Most customers complete installation in a few hours.

STEP BY STEP INSTRUCTIONS
Red and Black Custom Leather Seat Covers for Ford F150

Your Truck.Your Style.

Custom orders are our jam. Our custom program makes for a truly bespoke experience leaving only your imagination for the thousands of possibilities. If you're looking for the best truck seat covers then look no further!

Clazzio seat cover

Airbag Safe

Our seat cover construction has a high priority for allowing the OEM seat airbags to properly deploy when needed.

The proprietary thread design allows for the SRS systems to continue to function in a collision situation.

Clazzio Leather Covers

Made for your truck.For life.

Our seat covers are made exactly for your interior setup, perfect every time.

We offer most color setups in stock such as all black and all dark gray, however our custom color program is ready for your creative setups.

FAQ

Learn more about our truck seat covers with the frequently asked questions below.

DIY installation instructions are included for your specific application and takes around 2-3 hours for full interior installation.

The specific application specific instructions provided have step by step photos of how to install your new seat covers as well as tips and tricks. 

If you don't feel comfortable installing the seat covers yourself, then any local upholstery shop should be able to install them no problem.

Some vehicles do require cutting in certain spots like the power seat control panel, but nothing too major.

These leather seat covers are 100% slip on seat covers and do not require removal of your existing seat material.

Yes, our seat covers are fully compatible with factory heated and cooled seats.

Clazzio (our manufacturer) offers a 3 year warranty that is honored on any manufacturer defects.  This does not include normal wear and tear that comes with use on these seat covers.

You will receive the full interior seat cover set which includes bottom cushion covers, top cushion covers, head rest covers, and depending on the vehicle, arm rest covers.  It is a total makeover.

They are made by 11i-USA who manufactures these under the name Clazzio. They operate a large dealer system and we are a top nationwide dealer for them.

It depends if you ordered a custom set or not.


If you ordered a set that is in stock, then it will reach you in approximately 5-6 days via UPS ground (continental U.S.). Most all black or all dark gray sets are in stock, but we will let you know upon your order.


If you ordered a custom set, then it will take 8-10 weeks (occasionally longer) to arrive from Japan due to custom manufacturing, freight time, and US customs holding time.

Maybe! Contact us to see if your specific vehicle isn't listed on our site, or if you have any questions about the application.

We do have other applications such as passenger vehicles and two door cars as well. Just contact us!

Need just a bottom cushion replacement or another single piece? Contact us for pricing.

We can also supply just the front or rear seats if that is all you need.

Since our seat covers are manufactured for every application specifically, they account for features like these in your interior. Our development team uses a laser guided measuring system to ensure the best fitment for our seat covers.

For straps to fold down seats, they will include a cutout for those to loop through.  For bottom plastic trim on your front seats, the covers are meant to tuck in to those for a great, OEM+ fitment.

Yes, our seat covers are made with special stitching construction on our per application basis (not universal). The design allow for our covers to break at the specific points where the side airbags will detonate.

Blog posts

  • New Install : 2026 Ford F250 Seat Covers

    New Install : 2026 Ford F250 Seat Covers

    New Year - New Truck (and seat covers!) for our client Thomas and his 2026 Ford F250 Super Duty.  He has installed our covers on other trucks he owns and wanted to apply the same treatment to his brand new...

  • Seat Covers vs. Reupholstery: The Smarter Way to Restore and Protect Your Truck Seats

    Seat Covers vs. Reupholstery: The Smarter Way to Restore and Protect Your Truck Seats

    If you’ve owned your truck for more than a few years, chances are your seats don’t look or feel the way they used to. Bolsters start wearing thin, leather cracks or dries out, fabric stains set in, and what was...

  • When to Replace Truck Seat Covers: 7 Signs Your Truck Seats Need an Upgrade

    When to Replace Truck Seat Covers: 7 Signs Your Truck Seats Need an Upgrade

    Car seat covers work harder than most people realize. They take the daily abuse of commuting, weekend road trips, job sites, kids, pets, coffee spills, sun exposure — all the things that come with actually using your truck. Over time,...

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