Product Summary:
The Canon RF 100-400mm f/5.6-8 IS USM is the lightest, most compact 400 mm lens ever made for full-frame mirrorless – just 635 g and fits in almost any day bag. Perfect for tourists who want to photograph distant Mount Fuji from Tokyo, shy Nara deer, sumo action, festival floats, airplanes at Haneda, or moonrise over Kyoto without carrying heavy super-telephoto gear.
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Quick Highlights:
- Ultra-light 400 mm telephoto – only 635 g
- Full-frame 100–400 mm (160–640 mm on APS-C bodies)
- 5.5-stop optical IS (up to 7.5 stops with IBIS)
- Close-focus to 88 cm with 0.41× magnification at 400 mm
- Compatible with RF 1.4× (560 mm) & 2× (800 mm) extenders
- Nano USM for fast, silent AF
Product Details / Description:
The ultimate “big reach, small bag” telephoto for travel, wildlife, and events.
About the Product
Released in 2021, this lens shocked the world by delivering true 400 mm reach in a body smaller and lighter than most 70-200 mm lenses. Tourists love it because it slips into a sling bag, works hand-held all day, and still gets frame-filling shots of distant subjects that would otherwise be impossible with shorter lenses.
Key Features
- Incredible 100–400 mm range in a 635 g package
- 5.5-stop IS for sharp handheld shots even at 400 mm
- Almost half-macro (0.41×) at 400 mm for large flowers & details
- Full extender compatibility (560 mm f/8 or 800 mm f/11)
- Customizable control ring + focus limiter switch
Technical Specifications
| Item | Specification |
|---|---|
| Focal Length | 100–400 mm |
| Maximum Aperture | f/5.6–8 |
| Lens Construction | 12 elements in 9 groups |
| Aperture Blades | 9 (rounded) |
| Minimum Focusing Distance | 0.88 m (at 200 mm) |
| Maximum Magnification | 0.41× (at 400 mm) |
| Filter Diameter | 67 mm |
| Dimensions (ø x length) | Approx. 79.5 × 164.7 mm |
| Weight | Approx. 635 g |
What’s in the box (Included Items):
- Canon RF 100-400mm f/5.6-8 IS USM lens
- High-quality 67 mm protective filter (mounted)
- Original Canon lens hood
- Front and rear lens caps
- Canon soft lens pouch
- QR code card for digital manual
Where This Product Can Be Used:
- Distant Mount Fuji shots from Tokyo skyscrapers or Enoshima
- Nara deer, Arashiyama monkeys, and Hokkaido wildlife from safe distance
- Sumo, baseball, and festival parades from the stands
- Airplane spotting at Haneda, Narita, and Kansai airports
- Moon and sunrise/sunset compression shots
- Safari-style animal photos in Okinawa or Hokkaido
Why Tourists Rent From Us
- English-speaking customer support
- Accept foreign credit cards
- No Japanese phone number required
- Offer hotel & Airbnb delivery
- Easy return for travelers
Book with Jasumo:
If you are ready to rent this product, you can contact us with the Product Name, the Rental start date and end date, your delivery Location, and other important details you want to share. After we get a request from you, our team will start communicating with you as soon as possible.
FAQs:
Is the RF 100-400mm sharp at 400 mm?
Yes – surprisingly sharp, especially stopped down to f/9–f/11, and excellent on high-resolution bodies like R5 or R7.
Can I really hand-hold 400 mm shots all day?
Absolutely – at only 635 g plus 5.5-stop IS (7.5 stops on R5/R6 II), most users shoot sharp photos handheld at 1/60 sec.
Does it accept extenders?
Yes – RF 1.4× (140–560 mm f/11) and 2× (200–800 mm f/16) work perfectly with full AF and IS.
Is it weather-sealed?
It has basic dust and drip resistance (not full L-series sealing) – fine for light rain with care.
Will it work on APS-C bodies (R7, R10, R50)?
Yes – becomes an incredible 160–640 mm equivalent super-tele with full performance.
Planning a Group Trip to Japan?
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