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Canon Extension Tube EF 25 II

BH #CAETEF25Q • MFR #9199A001
Canon Extension Tube EF 25 II
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Canon Extension Tube EF II Overview

The result of using extension tubes is that the distance from the back of the lens to the film surface is longer, which means you can take photographs at shorter distances to the subject. Extension tubes are thus commonly used for macro photography and sometimes for closeup portraits.

When using the camera's TTL metering system, no exposure compensation will be required (exposure compensation is required for handheld meters).

This updated version II is now also fully compatible with Canon Digital EF-S lenses, as well as standard photo EF and TS-E lenses.

Extension Tube EF 25 II is recommended for lenses with a focal length of 50mm and up (EF-S 18-55mm can be used at middle and tele zoom settings).

Shortens focusing distance of lens
Compatible with EF-S lenses, as well as EF and TS-E lenses
White-index mark provided for digital SLR EF-S lenses
Red mark provided for photo lenses
UPC: 013803035605

Canon Extension Tube EF II Specs

MountCanon EF
Length25 mm
Packaging Info
Package Weight0.4 lb
Box Dimensions (LxWxH)3.4 x 3 x 3"

Canon Extension Tube EF II Reviews

Good, but not quite what it should be

By Bob
Rated 4 out of 5
Date: 2022-08-09

I'm digitizing old film with and R5 mounted to a Beseler Dual Mode Slide Duplicator. I wanted this extension tube to use with an old EF 55 Macro to shoot approximately 1:1 copies of full frame 35mm film. I've used that setup in the past on other Canons with very good results. I lost my previously used extension tube somewhere along the way. This Canon tube works well and does what it's supposed to do. I'll knock the rating down slightly because of the price; and because the build quality doesn't match a similar much lower priced (RF) mount tube from Fotodiox. Using and RF mount tube just means I have to switch the order of the lens, tube and adapter. The Fotodiox tube is heavier (should dampen camera vibration better)... and the lens mount is machined to produce connection between the components that has zero free play. Not true with the Canon tube. (I'm using Canon branded EF to RF adapters in both cases)

Does what it does

By Robert
Rated 5 out of 5
Date: 2021-08-20

It's wildflower season, and I found I wasn't able to get quite as close-in as I wanted with the 100 macro, so I added this guy. Did just what it's supposed to - brought down the minimum focusing distance. The 100 already has a paper-thin plane of focus, the tube only increases that effect. I didn't notice much in terms of f-stop loss that affected what I could work with. I like that it's Canon with that build quality and guaranteed electronic compatibility. See the focal plane at the moth's proboscis:

Does it's job well

By Steve
Rated 4 out of 5
Date: 2021-08-15

Makes my 70-200 focus closer so good for chasing butterflies and other small critters

Works perfectly

By Peter
Rated 5 out of 5
Date: 2021-05-09

I bought this to be able to photograph some old 35mm negatives and it worked perfectly. Most noticeably, the auto-focus was spot-on even that close. Personally, I feel much more confident using the Canon Extension Tube as opposed to other makes. I now have a way of digitizing negatives that costs so much less than the kind of scanner I would need for that kind of resolution. And, of course, B&H service was excellent as ever.

Does what it's supposed to do.

By William
Rated 4 out of 5
Date: 2021-04-30

I hesitated buying this because I had an extension tube once and didn't like it. My main complaint was not being able to focus to infinity. I decided to take the plunge again, and that problem is still my main complaint - of course I knew this going in, so I'm trying to learn to live with it. The increase in close up ability was my main reason for buying it, and it works great for that purpose - at least on most of my lenses. Auto focus is a concern, because my eyesight isn't as good as it was a couple decades ago. But, I have used it on my Canon 100-400mm L zoom, with a 1.4x iii teleconverter, and it works fine. It also auto focuses on my 70-300mm IS II USM Canon lens. Auto focus does not work on my Tamron 18-400mm lens. It works on all three of my DSLR's - MK IV, 80D and 77D. Construction is very solid. I'm not sure how much I'll use it, but I'm going to hang onto it.

Fits perfectly

By Glenn
Rated 5 out of 5
Date: 2021-04-27

I bought this to replace the aftermarket extension tube that I was using to stack my Series III extenders together. Works just fine. May not be worth the big cost over third-party versions but it is nice knowing I'm using all Canon products.

Compra feliz.

By Ramirez
Rated 5 out of 5
Date: 2021-09-17

Muy buen producto, gracias.

Exelente muchas gracias.

By Ramirez
Rated 5 out of 5
Date: 2021-09-17

Muy buena compra, gracias.

See any errors on this page? Let us know


Sony 7

Sony 7
Asked by: Donna
This product is for use with Canon EF mount lenses and not for Sony a7 series cameras.
Answered by: Yoni
Date published: 2020-08-02

Is this extension tube compatible with the Canon ...

Is this extension tube compatible with the Canon -70 - 200mm f/2.8L IS II USM lens. I have tried it on this lens and others and I can't get it to focus manually or automatically. Bad tube?
Asked by: Lynda
It is compatible , just be aware that this is to help you focus close (micro) not a telephoto use .
Answered by: vilson
Date published: 2021-02-18

Will this work with non Canon (Tamron, Sigma etc) ...

Will this work with non Canon (Tamron, Sigma etc) lenses?
Asked by: Milton
If the lens has a Canon EF or EF-S mount, it will work - if the lens's focal length is adaptable to the extension. If the lens has autofocus, it will drive its motor and will always work in manual mode. If the lens has a Canon FD or R mount, it will not work.
Answered by: Ralph
Date published: 2021-05-09


What kind of results can one expect using Canon's 70-300L? How much closer is focusing improved?
Asked by: Daniel D.
Basically you will use this so your Canon EF 70-300mm f/4-5.6L IS USM Lens will be able to focus closer than the lens's native close focusing distance of 3.94' / 1.2 m. We were not able to find information as to how much closer but we would guess that bout 2' would not be unreasonable. People with telephoto lenses by this to do exactly this, get a closer focusing distance. This can be an excellent too.
Answered by: Dennis A L.
Date published: 2018-08-27

How is an extension tube different from a 2x ...

How is an extension tube different from a 2x converter?
Asked by: Robert
A 2X converter will double your focal length, an extension tube will reduce the minimum focusing distance to your subject.
Answered by: Al
Date published: 2021-10-11


does thiswork for EF-S lens to be mounted on full frame body camera ?
Asked by: KAMRAN K.
Yes it will work with an EF-S lens on a Full Frame body. It's recommended for lenses with a focal length of 50mm and higher.
Answered by: James B.
Date published: 2018-08-27

Can I use this with the EOS R and the EF 100mm ...

Can I use this with the EOS R and the EF 100mm 2.8? As the lense is already adapted to the camera.
Asked by: Humaam
I need to qualify my last response. If you place the Extension tube between the EF 100mm and the RF adaptor (that you already have?) it might work. You say "as the lens is already adapted to the camera." Does that mean you already have an RF adaptor? My hesitation is that rear focus is so much closer on a mirrorless camera that adding an extension tube potentially creates a problem. The R series and the EOS with a mirror series are very different.
Answered by: Joel
Date published: 2020-08-25


Asked by: Anonymous
Yes, you can stack extension tubes for greater macro capability.
Answered by: Matthew C.
Date published: 2022-03-15
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