News, Tips & Reviews
B&H Gift Cards
The Professional's Source Since 1973
Ask Our Experts800-952-1815
Hello, Log InAccount & Orders
My Cart
Video Chat with a Photography Expert - Live
Home

FotodioX Pro Auto Macro Extension Tube for Canon EF & EF-S Lenses (21mm)

BH #FOEAMT21 • MFR #MACRO-TUBE-AUTO-EOS21
64 reviews
Print
FotodioX Pro Auto Macro Extension Tube for Canon EF & EF-S Lenses (21mm)
Key Features
  • Maintains Automatic Lens Functions
  • Can Be Stacked
The 21mm Pro Auto Macro Extension Tube from Fotodiox is suitable for use with Canon EOS EF & EF-S Lenses for extreme close-up. It is an automatic tube that is able to communicate all electronic functions from the lens to camera including autofocus and auto-exposure. No other optical components are added, so the image will preserve the original optical properties of the lens.
More Details
In Stock
No Store Display
$29.95
+
Save the Tax‡
when you use the Payboo credit card. Learn More
Add to Cart
Protect Your Gear
Add a protection plan from $8.99
See Options
Ask an Expert
800-952-1815

FotodioX Pro Canon EF Overview

The 21mm Pro Auto Macro Extension Tube from Fotodiox is suitable for use with Canon EOS EF & EF-S Lenses for extreme close-up. It is an automatic tube that is able to communicate all electronic functions from the lens to camera including autofocus and auto-exposure. No other optical components are added, so the image will preserve the original optical properties of the lens.

The lens transforms into a macro lens while maintaining its optical quality. By placing distance between your camera body and lens, focusing distance is shortened and the effect of magnifying your subject is created.

Any combination of tubes can be used for various reproduction ratios
No optical insert - maintains lens optical quality
Maintains the electronic functions of the lens, including auto-focus and auto-exposure
Matte black color
UPC: 847372023165

FotodioX Pro Canon EF Specs

Item Type
1x Macro Extension Tube (21 mm)
Camera/Lens Compatibility
Canon EF Mount
Materials
Aluminum
Packaging Info
Package Weight
0.2 lb
Box Dimensions (LxWxH)
3 x 3 x 0.9"

FotodioX Pro Canon EF Reviews

Good

By Juliana
Rated 4 out of 5
Date: 2022-02-03

They are a little bit tough to attach to each other or take out but I guess it will get smoother with use. It does the job it is supposed to =D

Extension Tubes

By Ernie
Rated 2 out of 5
Date: 2021-06-29

Got stuck on camera first time, 100 repair bill. I looked on blogs and I'm not the only one

See any errors on this page?

question

is this extension tube compatible with canon 650-D
Asked by: Anonymous
The FotodioX Pro Auto Macro Extension Tube Kit for Canon EF & EF-S Lenses is compatible with the Canon 650D (T4i), yes.
Answered by: Christina S.
Date published: 2018-08-28

question

The description states that the electronics of the lens will be preserved. Does that also included focusing with STM lenses?
Asked by: Anonymous
Yes, the electronic lens functions, including autofocus, will be retained with the FotodioX Pro Auto Macro Extension Tube Kit for Canon EF and EF-S Lenses.
Answered by: Heather S.
Date published: 2020-10-30

question

Hi,Does it fit with canon 60D and a tamron macro 90mm ?regards
Asked by: Anonymous
Yes, the FotodioX Pro Auto Macrio Extension Tube Kit for Canon EF and EF-S Lenses is compatible with the Canon EOS 60D and Tamron EF mount macro 90mm lens.
Answered by: Heather S.
Date published: 2018-08-28

question

Will these tubes allow a one to one copy ratio...., that is, can I copy slides with the digital camera, full frame to full frame?
Asked by: Anonymous
Yes, with these extension tubes you can depending on the lens get over 1:1 magnification.
Answered by: Robert K.
Date published: 2018-08-28

Will these extension tubes work with a Canon ...

Will these extension tubes work with a Canon mirrorless camera (e.g., EOS R) and Tamron 90mm lens?
Asked by: William
Natively, these would only properly mount to EF/EF-S systems and lenses. However, you could use these with the EF-RF adapter, with potentially some loss of autofocus reliability.
Answered by: Jeremy
Date published: 2021-01-18

Will this set work with Canon mirrorless (ie., ...

Will this set work with Canon mirrorless (ie., EOS R body) combined with Tamron lenses?
Asked by: William
I’m not sure William, but it looks like it won’t fit in a mirrorless EOS R because it uses a RF mount.
Answered by: Carlos Eduardo
Date published: 2021-01-19

question

Is it possible to make an even shorter tube ?
Asked by: Brian
13mm is currently the shortest available.
Answered by: Andrea O.
Date published: 2018-08-28

question

Will i still have access to manual focus and will i still have access to aperture and will i still have access to ISO?
Asked by: Gail M.
Yes. You can set your lens to manual focus. You will have control of your aperture and ISO. They work great!
Answered by: Michael S.
Date published: 2018-08-29
  • y_2026, m_10, d_22, h_6CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.48
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_20
  • loc_en_US, sid_995255, prod, sort_[SortEntry(order=HAS_STAFF_ANSWERS, direction=DESCENDING)]
  • clientName_bhphotovideo
Whatever You Need, We've Got It