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Reviews about this item

Review Summary

2026-05-13T10:54:03

Rated 5 out of 5

Perfect for wildlife

I love this lens. It's built well. Not too skinny. Not too bulky. Takes excellent photos.

CHARLENE C.

2026-05-13T09:54:09

Rated 5 out of 5

A GREAT lens at a great price

Love this telephoto lens with the R7. For the price, this is an insane combo. No weather sealing unfortunately but you will not be disappointed with its performance! AF can be unreliable and in low-light conditions but is still rather good, especially considering the price factor! I'm happy with it! And purchasing in the bundle you get a good deal overall.

Samantha S.

2026-05-13T09:48:34

Rated 5 out of 5

Great deal on bundle from Adorama!

This lens works great with my R7. Everything came as described in mint condition. The bundle is a great deal. I'm happy with the case, lens filters and cleaning accessories.

Samantha S.

2026-03-10T12:57:49

Rated 5 out of 5

RF 100-400 | Great Value

Great value, works perfectly for birding and wildlife at a price that is hard to beat. I hope they further expand the RF lineup in the future.

COLBY E.

2026-02-03T14:43:34

Rated 5 out of 5

Canon RF 100-400

Lens takes very good photos

RICHARD H.

2025-12-29T07:47:49

Rated 5 out of 5

Excellent value telephoto lens

Lightweight, versatile telephoto lens! Pairs very well with my Canon R7. Had a blast with it at the zoo with our kid! Excellent value.

ANTHONY B.

2025-10-28T13:30:55

Rated 5 out of 5

Great Lens

This lens is great, especially for this price. Easy to carry around. Have used it for wildlife photography, takes very clear photos.

SARAH W.

2025-10-15T20:00:00

Rated 5 out of 5

stunning value

have had for 2 years, tested this against the 100-500 and the images were the same quality. liked the 22oz vs 36oz, smaller and faster to use.

mainzerphoto

2025-07-07T23:46:39

Rated 5 out of 5

Perfect Zoom lens for beginners.

Excellent quality! I almost want to use it as a primary lens lol. Very pleased with my purchase.

LARRY C.

2025-07-03T22:44:36

Rated 5 out of 5

Customer service does count

Outstanding customer service plus they ship using UPS, not the other services. Lenses is fantastic. Very solid and image stabilization is awesome

PAPA H.

2025-06-29T20:00:00

Rated 5 out of 5

All worth it

It works perfectly with our R8 and, as expected, is much better than the EF-S 55 - 250mm on our EF cameras. We may want to try the RF 800mm later.

gimme

2025-06-09T20:00:00

Rated 5 out of 5

Good and lightweight lenses

Good lenses for travel wildlife and sports photography

Carlos J.

2025-06-08T20:00:00

Rated 5 out of 5

This is a Great Lens

I am getting great results with and without the 2x extender. The lens is light enough for off-hand shooting, but go with support for that big reach. I like that I can get full throw from 100 to 400 with just a quarter turn of the barrel to get that perfect frame without mucking my focus or aim.

awed

2025-06-03T20:00:00

Rated 5 out of 5

Love this lens

Purchased this a week ago and love it - great lens for those animal photos

Svesel

2025-05-07T20:00:00

Rated 4 out of 5

Lightweight, Inexpensive, but VERY SLOW!

A very good lens, especially for its pretty inexpensive, light weight, focus is fast. But oh that f/11 @400mm is so slow! I don't know if I can get 'use' to having to really turn up the ISO to get fast enough shutter to freeze motion of animals and birds. I almost gave it 3 stars.

RMP

2025-04-25T15:10:21

Rated 5 out of 5

Affordable travel lens

Lightweight with a nice range for wildlife photography -- and it won't break the bank. I paired this with my Canon R8 and traveled to the Galapagos. The combo was easy to handle and produced some excellent images!

Kris D.

2025-03-20T20:00:00

Rated 3 out of 5

Good lens for the price but quality suffers

This is a great lens for the price. Light weight, compact, great for walking around. I used it with my Canon RP body, which was a nice all around set up. The quality of images, however, is not as good as my L series lenses, especially at the 400mm range. I returned the lens and opted for the 100-500mm.

Ship p.

2025-02-22T19:00:00

Rated 5 out of 5

RF100-400 + 2x extender wins vs. RF200-800

I am writing this review as a previous owner of this lens because for whatever reason, it won't let me write a review for the RF200-800 lens, which I purchased to replace my RF100-400. That being said, I wish I still had this lens, for 3 main reasons: 1. This lens @ $649 + $450 2x extender (refurbished) is effectively the same focal length and aperture as the RF200-800 for ~$600 less. 2. The RF100-400 + 2x extender is VERY portable in comparison to the much larger RF200-800. 3. The RF200-800 has a much larger front lens and picks up a lot more dust than the RF100-400, so you will spend a lot more time trying to keep the RF200-800 clean. As far as image quality is concerned, I can't say the RF200-800 is noticeably better. This red tail hawk photo was taken with RF100-400 + 2x extender and is one of my favorites.

jimmer

2025-01-18T19:00:00

Rated 5 out of 5

The best lens you can have is the one that is with you

The best lens you can have is the one you have with you when you want to take a picture! Because of the compact size and low weight of this lens, you are likely to have it along on your nature hikes and adventures. Of course it would be worthless if it did not perform optically/photographically - have no fear, it performs very well! Very quick and silent auto focus, smooth zoom, and efficient vibration reduction. It has become my got to lens, or better said, my "take with" lens!

Jean M.

2024-08-16T20:00:00

Rated 5 out of 5

Great lens for the price!

This is a very flexible lens, with a decent focus speed and reasonably quiet. It's a touch on the slow side, but for the cost involved that's to be expected. Image quality is very good, takes full advantage of the R5 45MP sensor. It's nice to have the control ring on these new RF lenses!

Matthew H.

2024-08-07T20:00:00

Rated 5 out of 5

The Auto Focus and clarity of this lens is excellent.

My favorite lens for my R10. It meets my needs for the pictures I take

Cantrell

2024-05-28T08:59:04

Rated 5 out of 5

Great lens!

Lens is as advertised. Nice quality photos, just wish it had a further reach. Time for an extender. Always good service and price from Adorama.

DANIEL H.

2024-05-03T09:52:58

Rated 5 out of 5

Great lens

Great as a starter lens for wildlife photography. Very light which is great for hiking.

MICHAEL C.

2024-03-14T20:00:00

Rated 5 out of 5

Perfect for Wildlife

3 months shotting hundreds of birds, great lens for the price

ixmarcusd

2024-02-21T19:00:00

Rated 5 out of 5

Great lems

What a great addition to my collection. I have been playing around with it and excited about taking photos on an upcoming cruise.

Mari T.

2024-02-20T19:00:00

Rated 4 out of 5

Don't let the price fool you

I purchased an R6 Mark ii in November and only had the 24-105 mm lens. Which is fine but I needed a zoom lens. The other 100-400 mm white lenses were outside my budget. I was reluctant to buy this lens because, come on...it's $650. How good can that be? I've been pleasantly surprised with this lens as I'm learning to take bird photos. I think I want the 200-800 mm that is back-ordered/new next. I'm giving it 4.5 stars.

Justbreathe

2024-02-05T19:00:00

Rated 5 out of 5

Great value for the price!

Excellent lens and features. Looking forward to using it regularly.

DanR

2023-11-23T05:38:28

Rated 5 out of 5

RF 100-400

For the price this is an excellent lens. No issues good value.

PETERK K.

2023-11-20T19:00:00

Rated 5 out of 5

Fantastic Value

This is my favorite telephoto lens hands down. It represents fantastic value for camera lenses. I use this lens most often during the early evening or during the day. At periods around sunset you'll find that ISO needs to be increased. The 'slow' F-stop is usually a non-issue. Given the light weight of the lens and long zoom, it has become one of my favorites.

Jon F.

2023-09-24T20:00:00

Rated 5 out of 5

Good quality lens

I've had the RF 100-400 for 3 months now. It's one of my favorite lenses. I use it on my Canon RP during daytime walks. This is a hobby of mine. I like capturing images of birds, butterflies, flowers, and landscapes. The autofocus is solid. I don't have a lens hood or an nd filter yet I just shoot the lens s is. It feels nice and solid. I like the control ring. Very enjoyable.

Kayla2345

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Canon RF 100-400mm f/5.6-8 USM Specifications

Lens
  • Focal Length

    100-400mm

  • Aperture

    Max.: f/5.6 - f/8 (f/8 at 400mm position)
    Min.: f/32 - f/45 (f/45 at 400mm position)

  • Lens Mount Type

    RF Mount; Metal Mount

  • Lens Format

    Full Frame

  • Minimum Focusing Distance

    3.94' (1.2m) at 100mm
    2.89' (0.88m) at 200mm
    3.44' (1.05m) at 400mm

  • Maximum Magnification

    0.41x, at 400mm (0.09x at 100mm)

  • Field of View, at Minimum Focus Distance

    Approx.: (100mm) - 10.2 x 15.2 in. (260 x 386mm)
    Approx.: (400mm) - 2.2 x 3.3 in. (57 x 85mm)

  • Angle of View (Diagonal)

    Approx. 24 Degree - 6 Degree 10"

Extender RF Compatibility

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  • Compatibility

    Canon Extender RF1.4x / RF2x

  • Equivalent Focal Length/Maximum Aperture

    RF1.4x - 140mm-560mm, f/8-11
    RF2x - 200-800mm, f/11-16

  • Maximum Close-focusing Magnification

    RF1.4x - 0.12x - 0.58x
    RF2x - 0.18x - 0.83x

  • Autofocus with EOS R Series Cameras

    Possible with either extender, at all zoom settings

  • Image Stabilizer

    With EOS R series Cameras
    Possible with either extender, at all zoom settings

Optical Design

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  • Lens Construction

    12 elements in 9 groups

  • Special Elements

    (One) UD-glass element
    (One) Aspherical element

  • Lens Coating

    Canon SSC (Super Spectra Coating)

  • Filter Size Diameter

    67mm

  • Aperture Blades

    9; circular shape

Focusing

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  • Focusing Drive System

    Nano USM; rear focusing system

  • Full-time Manual Focusing

    Yes (Lens Electronic MF)

  • Dual Pixel CMOS AF Coverage

    (Horizontal x Vertical)

    EOS R, EOS RP
    Approx. 88% x 100%
    With Extender RF1.4x - approx. 80% x 80%
    With Extender RF2x - approx. 40% x 60%

    EOS R5, EOS R6
    Approx. 90% x 100%
    Face+Tracking horizontal: approx. 100% x 100%
    With Extender RF1.4x - approx. 80% x 80%
    With Extender RF2x - approx. 40% x 60%

Image Stabilization

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  • IS on-off

    Image Stabilizer switch, on lens barrel

  • Optical Image Stabilization

    Provided
    5.5 stops optical IS correction (at 400mm)
    Conforms to CIPA test standards, using EOS R

  • Coordinated IS

    (with EOS R-series cameras having In-Body Image Stabilization)
    Provided
    6 stops Coordinated IS correction (at 400mm)
    Conforms to CIPA test standards, using EOS R-series cameras with In-Body Image Stabilization

  • IS Mode Selection

    No (Automatic switching to panning correction IS, when panning is detected)

  • Panning Mode Support (SCN mode)

    Supported

Exterior Design

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  • Control Ring

    Provided (with click-stops)
    Programmable via "Customize Dials" in camera's Custom Functions menu
    58 clicks per revolution
    Clicks can be removed by Canon service center, for a service fee

  • Manual Focus Ring

    Electronic ring system
    Full-time Manual focus possible
    No physical limit to ring rotational angle

  • Distance Scale

    No
    Distance scale available in EVF or Live View LCD screen of compatible EOS R cameras

  • Distance Limiter Switch

    No

  • Dust/Weather Resistant Construction

    No

Physical

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  • Dimensions (Dia x L)

    Maximum Outer (Approx.): 3.13 x 6.48" (79.5 x 164.5mm)

  • Weight

    Approx.: 22.4 oz (635g)

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New Canon EOS R3 Camera Plus RF100-400mm F5.6-8 IS USM & RF16mm F2.8 STM Lenses: Hands-On Review

Canon has just announced two new lenses and the long-awaited Canon EOS R3. All three new products join Canon’s renowned EOS R mirrorless lineup. The addition of the new RF 16mm F2.8 USM wide angle lens and the...
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About Canon RF 100-400mm f/5.6-8 IS USM Lens

Canon RF 100-400mm.

Perfect for wildlife, sports, travel and more, the RF100-400mm F5.6-8 IS USM is a compact, lightweight telephoto lens for EOS R Series cameras, offering a versatile zoom range that brings subjects closer with ease. The RF100-400mm F5.6-8 IS USM is similar in size to the EF 70-300mm F4.5-5.6 IS II USM lens, but not only reaches to 400mm, but also has fast Nano USM focusing and up to 6 stops of Coordinated IS when used in combination with an EOS R series camera featuring In-body Image Stabilization like the EOS R5 and EOS R6, or 5.5 stops with an EOS R/RP camera.

Canon RF 100-400mm

Crisp & Colorful Images.

Using a single Ultra Low Dispersion lens element towards the front of the lens group corrects chromatic aberration throughout the entire zoom range, making your images look crisp and colorful with minimal color blur. The RF100-400mm F5.6-8 IS USM lens can also accept both the RF1.4x and RF2x tele extenders giving you the effective maximum focal length of 560mm and 800mm respectively. With a control ring that allows for quick setting changes, including shutter speed and aperture, the RF100-400mm F5.6-8 IS USM lens puts quality, convenience and control in your hands.

Crisp & Colorful Images.

Features.

  • Compact, lightweight and high-image quality RF tele zoom lens, with a versatile zoom range of 100-400mm
  • Optical Image Stabilizer with up to 5.5 Stops of shake correction
  • Up to 6 stops of shake correction when paired with EOS R series cameras featuring In-Body Image Stabilizer (IBIS)
  • Minimum focusing distance of 2.89 feet at 200mm and maximum magnification of 0.41x at 400mm
  • High speed, smooth and quiet autofocus with Canon's Nano USM
  • 9-blade circular aperture for beautiful bokeh
  • Control Ring for direct setting changes
  • High speed, smooth and quiet autofocus with Canon's Nano USM
  • Compatible with optional Canon Extenders RF1.4x and RF2x