# Canon RF100-400mm F5.6-8 IS USM

- Name: Canon RF100-400mm F5.6-8 IS USM Telephoto Zoom Lens / キヤノン RF100-400mm F5.6-8 IS USM / 佳能 RF100-400mm F5.6-8 IS USM 远摄变焦镜头
- Brand: Canon / キヤノン
- Category: Cameras & Lenses
- Version: Japan-only model (TBD)
- Page: https://bestjapanbuy.com/en/p/canon-rf100-400mm-f5-6-8-is-usm/
- Updated: 2026-10-26

As of 2026-10-26, the lowest online price on Kakaku.com is JP¥91,880 (incl. tax); of the 21 destinations we check, it works as is in all 21.

Canon RF-mount telephoto zoom, 100–400mm F5.6–8 with optical stabilization, about 635g; No. 1 in Kakaku.com's lens popularity ranking (October 2026).

- Good for: Canon RF users who want to shoot sports and wild birds
- Not for: People who mostly shoot indoors or in low light

## Price in Japan

- Japan reference price incl. tax (Lowest online price, shipping not included): JP¥91,880
- Tax-free / after refund: JP¥83,527 (estimated from the lowest online price; stores usually charge more)
- Flights: OK on the plane

## Will it work? (by destination)

| Destination | Result | Notes |
| --- | --- | --- |
| Mainland China | ✓ Works as is | — |
| Hong Kong | ✓ Works as is | — |
| Macao | ✓ Works as is | — |
| Taiwan | ✓ Works as is | — |
| Singapore | ✓ Works as is | — |
| South Korea | ✓ Works as is | — |
| United States | ✓ Works as is | — |
| Thailand | ✓ Works as is | — |
| Malaysia | ✓ Works as is | — |
| Philippines | ✓ Works as is | — |
| Vietnam | ✓ Works as is | — |
| Indonesia | ✓ Works as is | — |
| India | ✓ Works as is | — |
| Australia | ✓ Works as is | — |
| New Zealand | ✓ Works as is | — |
| Canada | ✓ Works as is | — |
| United Kingdom | ✓ Works as is | — |
| Germany | ✓ Works as is | — |
| France | ✓ Works as is | — |
| Italy | ✓ Works as is | — |
| Spain | ✓ Works as is | — |

## Specs

| Item | Value |
| --- | --- |
| Brand | Canon / キヤノン |
| Model | RF100-400mm F5.6-8 IS USM |
| Version | Japan-only model |
| Voltage | TBD |
| Frequency | TBD |
| Plug | TBD |
| Power | TBD |
| Battery | No built-in battery |
| Released | 2021 |
| Type | Interchangeable lens |
| Mount | Canon RF mount |
| Sensor format | Full frame |
| Effective megapixels | TBD |
| Focal length / aperture (lenses) | 100–400mm F5.6–8 |
| Weight (body without battery and card) | 635g |
| In-body stabilization | TBD |
| In-camera USB charging | TBD |

## Reviews

Third-party rating 4.56/5 (77), source: Kakaku.com (not our rating).

## Frequently asked questions

### Can I use the Canon RF100-400mm F5.6-8 IS USM outside Japan?

Of the 21 destinations we check, it works as is in all 21.

### How much is the Canon RF100-400mm F5.6-8 IS USM in Japan tax-free?

As of 2026-10-26, the lowest online price on Kakaku.com is JP¥91,880 including tax. Tax-free or after the refund it is JP¥83,527. This is estimated from the lowest online price; stores usually charge more. From Nov 1, 2026, you pay the tax-included price in store and get the tax refunded when you leave Japan (a fee may apply).

### Where can I buy the Canon RF100-400mm F5.6-8 IS USM in Japan?

Sold at major electronics stores in Japan (Bic Camera, Yodobashi Camera and others); check stock before you go. The price we list is from Kakaku.com (2026-10-26); prices in store may differ.


## Sources

- Specs: [Kakaku.com specifications page](https://kakaku.com/item/K0001383775/spec/)
- Japan price: [Kakaku.com](https://kakaku.com/item/K0001383775/) (2026-10-26)
- Rating: [Kakaku.com](https://kakaku.com/item/K0001383775/review/) (2026-10-26)

> Data from BestJapanBuy (bestjapanbuy.com). Please credit and link to the page when using it. Prices are for reference only; check in store.