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  • Cowboystudio Auto-Focus Macro Extension Tube for Canon Camera
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Cowboystudio Auto-Focus Macro Extension Tube for Canon Camera


List Price: $95.00
Price: $58.70 & FREE Shipping. Details
You Save: $36.30 (38%)
Only 3 left in stock (more on the way).
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For Canon
  • One (1) Auto-Focus Macro Extension Tube
  • One (1) Front & Rear Cap
  • Compatible with all Canon SLR cameras
  • Materials: Metal


Product Details

Style: For Canon
  • Shipping Weight: 6 pounds (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B003PNKFNG
  • Item model number: Canon auto tube set
  • Average Customer Review: 2.8 out of 5 stars  See all reviews (10 customer reviews)
  • Date first available at Amazon.com: June 4, 2010

Product Description

Style: For Canon

The AF Extension Tube Set can transform your Lens into a Macro Lens. It moves the lens from the film or digital sensor. The closer the focus is, the greater the magnification. The extension tube does not affect image quality as there is no optics inside. In comparison, a close up filter is often blamed for degrading the quality of image.

This tube set contains three piece tubes of different length -- 13mm, 21mm, and 31 mm -- which can be used individually or in any combination to obtain the desired magnification. These extension tubes are designed with all the circuitry and mechanical coupling to maintain auto focus and TTL auto exposure with most Canon lenses, given there is enough light to activate the cameras AF system properly.

Customer Reviews

2.8 out of 5 stars

Most Helpful Customer Reviews

11 of 11 people found the following review helpful By Houston wildlife on September 27, 2011
Style Name: For Canon Verified Purchase
Well, extension tubes all have the same high quality air inside of them, so there shouldn't be too much difference from one to the other... Well not quite.

First, these are actually fairly robust, lock tight, and have a metal mounting flange unlike a lot of the cheapies out there. However, despite their quality, they do flex enough that stacking two is asking for trouble as lens communication is going to be an iffy thing at best. And forget about using all three at a time, even with a light-weight lens. Again, this is common to all cheap extension tubes and even the Canon tubes get a but finicky when you try and stack them.

The biggest flaw (and this likely doesn't matter to most people) is that for a lot of Canon L series telephotos, these tubes interfere with the IS mechanism and you get very odd IS stuttering that makes photography a bit difficult and MAY damage the IS mechanism if done repeatedly. My guess is that the tube contacts don't carry enough current to keep the IS going and the gyros park when the current drops below some threshold. Of course, it may be a microprocessor issue as well. In either case, I can verify that these tubes will not work with the 100-400/L, 500/4, and the 600/4. I probably should have tested them on more IS lenses, but sent them back in short order once I realized that they would not perform the required tasks.

I paid a lot more for the Canon tubes instead. Wish I didn't have to, but I didn't have a choice.
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12 of 14 people found the following review helpful By GailK on December 15, 2010
Style Name: For Nikon Verified Purchase
I ordered this and couldn't believe my eyes when I opened the box. First of all, it had obviously been returned at least once already as the box was dirty and torn, and half open. That's not a deal-breaker as I don't buy stuff for the box, but it gives a poor first impression. Upon opening it, I found a set of manual extension tubes that appear identical to the ten dollar Fotodix ones. The sections screw together and obviously have no contacts to allow autofocus or metering. There were no caps either. Or any instructions or paperwork. Totally different than described or pictured. I might have written this off as an Amazon error, however I have now read some reviews on other Cowboystudio items that make me believe it is not. I would stay away from this "brand" for now.
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5 of 5 people found the following review helpful By AppleCreek on February 28, 2011
Style Name: For Canon Verified Purchase
Each extension tube worked great when used by itself on a lens. But when any combination of tubes were used on a lens they wouldn't autofocus or control the aperture. I have a 5D mark II and a 40D, 70-200mm lens, 24-105mm lens and 17-55mm EFS lens. I had the same results no matter what camera or lens combination I used. And it didn't matter in what order I connected everything - same results. I love Cowboy Studio's stuff and prices but this was very disappointing.
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3 of 3 people found the following review helpful By Dave S on July 18, 2012
Style Name: For Nikon Verified Purchase
I purchased CowBoyStudio Nikon auto-focus macro extension tubes. They worked well for about six weeks, then the 20mm tube would not make electrical connection with any of the three Nikon DSLR bodies and four lenses that I attempted. The contacts were polished to ensure no corrosion was preventing a connection but still no luck getting it to work. The 12 and 36mm tubes continue to work great singly and in combination, but the 20mm tube doesn't make electrical connectivity at all.

I contacted CowboyStudio to see about getting a replacement for the 20mm tube. They gave me an RMA# for the return and replacement. The item was returned via UPS and Proof of Delivery shows that it was received by Cowboy Studio on Jun 14th.

On Saturday, Jun 30th, I still hadn't received the replacement so I contacted CowboyStudio to see what was happening. I got a reply on Tuesday, July 3rd, that they were checking on the status. A few days later I got an email with a USPS tracking number for the replacement item.

Today is Wednesday, July 18th, and I still have not received the item. When I check the tracking number the USPS tracking site shows that electronic shipping info was received on July 7th, but nothing after that.

I've sent emails and filled contact forms with CowboyStudio three additional times in the last week and had zero response.

So, what's the bottom line? The 20mm auto-focus extension tube failed in about six weeks. CowboyStudio provided an RMA# for a replacement. They received the returned/failed 20mm tube about five weeks ago. They have not provided a replacement and are now not responding to requests for an update on what is happening. Overall a very frustrating experience.

Would I buy from CowboyStudio in the future?
Read more ›
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1 of 1 people found the following review helpful By Richard Hayes on October 2, 2013
Style Name: For Nikon Verified Purchase
I found the longer tubes to not fit tightly, causing sag and resulting focus problems. Usable, but I'm not that happy with the product. Had I known what the problems would be, I would not have purchased the extension tube set.
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