Macro Lens Tube Extension for Canon DSLR, Micnova KK-C68 Pro Auto Focus Macro Extension Tube Set for Canon EOS EF & EF-S Mount 5D2 5D3 6D 650D 750D Film Cameras (12mm 20mm and 36mm Tubes)

Price: $65.00
(as of Jul 17, 2025 01:02:00 UTC – Details)

Product Description

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SK-C68

AF Extension tube set with Bayonet in Brass for Canon (12mm 20mm 36mm)

The SK-C68 Extension tubes are designed to enable a lens to focus closer than its normal set minimum focusing distance. Getting closer has the effect of magnifying your subject (making it appear larger in the viewfinder and in your pictures). They are exceptionally useful for macro photography, enabling you to convert almost any lens into a macro lens at a fraction of the cost while maintaining its original optical quality. This Autofocus Extension Tube Set (12/20/36mm) for Canon from Sevenoak contains three tubes of different length, a 12 mm, 20 mm and 36 mm, which can be used individually or in any combination to obtain the desired magnification. (An individual 25mm autofocus extension tube is available).

These tubes allows you take close-up photos using your Canon DSLR and lenses by placing one or more of these autofocus extension tubes between the camera body and the lens. The back of each hollow extension tube has a Canon mount so that it attaches to the camera just as a lens would, and the front accepts a Canon lens. With metal construction and lens mount index, it can work with telephoto lens tightly, and mount the lens easily. The front and rear caps prevent the dust into the tubes. Designed with all the circuitry and mechanical coupling, these extension tubes are able to maintain autofocus and TTL auto exposure normally. The extension tubes have no optics. By moving the lens closer to subject this way, you get a magnified image. The greater the length of the extension tube, the closer the lens can focus.

Enjoy taking macro shots For close-up photography For Canon EF & EF-S SLR cameras

Compatible with Canon EOS cameras with EF & EF-S mount

Made of Brass, metal and plastic construction

A very economical way to get awesome close-ups
1 Insects Observation

2 Flowers Plants

3 Bufferfly & snowflakes

4 Fruit Close-up Image

5 Diamonds rings & Coin

How to get it auto focus when use C68 with my Canon Lens?

Make your device match the conditions of AUTO FOCUS when using Canon lens with C68:

1. Camera supports Auto-focus.

2. Lens supports Auto-focus, set the switch on AF mode.

Why can’t get it auto focus when use three tubes together?

Try one by one to test auto focus. Dark light or weak light may lead the auto focus failure.

What’s the warning of using the tubes?

Do not use the tube to shoot strong light or strong sunshine, it will harm your eyes in a flash.

Can i use the tube individual or in combination?

Yes, both are available. 12 mm, 20 mm and 36 mm can be used individually or in any combination to obtain the desired magnification.

The greater the length of the extension tube, the closer the lens can focus.

What’s in the box?

1* Sevenoak 12mm C-AF tube

1* Sevenoak 20mm C-AF tube

1* Sevenoak 36mm C-AF tube

1* Portable Bag with high quality and PU surface

1* Manual Book

Not used to make the photo bigger Focus closer-up

Always remember that extension tubes aren’t used to make the photo bigger, but to be able to focus closer-up.

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

Using the lowest magnifier Get amazing detail

A very economical way to get awesome close-ups

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

Attach smoothly and easily Wonderful alternative

Perfefct for macro photography

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

Not miss any details Record important section of life

Great for beginners of micro photography.

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

Capture more detail at the world around A whole new level of close up

If you have skill, these work great on a standard lens

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

Take nice details and ring shots Wedding and portrait photography

Suitable for wedding and portrait photographer

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

3 tubes to vary magnification 12mm 25mm 36mm 12mm+25mm+36mm

How to install? Step 1

Remove lens from Canon camera body

Step 2

Align tubes with camera’s dot mark and turn tubes clockwise

Step 3

Press the release button and rotate tubes anticlockwise

Step 4

Attach the lens to extension tubes.

Note: It Supports use in individual or Combination.

Kit of three extension tube sections: 12mm and 20mm, 36mm – Any combination of tubes can be used for various reproduction ratios
Designed with all the electrical and mechanical couplings to maintain auto focus and TTL auto exposure
Extension tubes are designed to enable a lens to focus closer than its normal set minimum focusing distance
Made of brass, Metal and plastic Construction
1 Year Warranty