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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. The extension tubes have no optics. They are mounted in between the camera body and lens to create more distance between the lens and film plane. By moving the lens father away from the film or CCD sensor in the camera, the lens is forced to focus much closer than normal. The greater the length of the extension tube, the closer the lens can focus. The KENKO AUTO EXTENSION TUBE SET 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. Kenko also makes a UNITUBE 12 mm or 25 mm which can be purchased individually. Kenko's Auto Focus extension tubes are designed with all the circuitry and mechanical coupling to maintain auto focus and TTL auto exposure with most Nikon lenses given there is enough light to activate the cameras AF system properly. Please Note; 1. When using extension tubes the lens will not focus to infinity. The focus range will be greatly limited to a very close focusing distance. 2. There is light fall of
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Most Helpful Customer Reviews
120 of 122 people found the following review helpful
By Mr. Sa Bell
Due to the larger format; if you want to shoot macro with a dSLR then you have two workable choices: buy macro lenses, or use macro extension tubes.
Many people will tell you that extension tubes are a cheap alternative to a good macro lens but it's simply not true. The truth is that all a macro lens is; is a normal lens with an extension tube built in.
The only advantage to using a true macro lens over tubes is that macro lenses can also focus to infinity, whereas you can't do this without taking macro tubes off. But who shoots macro at 50yards anyway? Not to mention that many macro lenses are slow and inaccurate when focusing at distance.
Macro lenses are fine, but they're expensive and one might not be enough for you. For example: a 60mm macro lens will be great for stamps, coins and REALLY close up arty shots of textures you can barely see, but you'll need something around the 90mm+ range to keep out of your own light when not using flash. Then if you want to photograph skittish insects, you'll need something in the 150mm+ range in order to be sure you don't scare them off. Put all of that together and you're well in to four figures of hard cash.
With extension tubes you can add varying degrees of extension which in turn reduces the minimum focus distance of whatever lens you put on them. And that's the important thing: you can turn any lens you own into a very flexible macro lens.
So if you already own a 50mm, 85mm and 150mm, or zooms that cover those focal lengths then you can pretty much have a macro lens for every occasion for less than the price of one such macro lens.
Plus, you'd need a whole new camera bag to carry that many macro lenses. These extension tubes are about the size of a small lens and much much lighter!... Read more ›
Many people will tell you that extension tubes are a cheap alternative to a good macro lens but it's simply not true. The truth is that all a macro lens is; is a normal lens with an extension tube built in.
The only advantage to using a true macro lens over tubes is that macro lenses can also focus to infinity, whereas you can't do this without taking macro tubes off. But who shoots macro at 50yards anyway? Not to mention that many macro lenses are slow and inaccurate when focusing at distance.
Macro lenses are fine, but they're expensive and one might not be enough for you. For example: a 60mm macro lens will be great for stamps, coins and REALLY close up arty shots of textures you can barely see, but you'll need something around the 90mm+ range to keep out of your own light when not using flash. Then if you want to photograph skittish insects, you'll need something in the 150mm+ range in order to be sure you don't scare them off. Put all of that together and you're well in to four figures of hard cash.
With extension tubes you can add varying degrees of extension which in turn reduces the minimum focus distance of whatever lens you put on them. And that's the important thing: you can turn any lens you own into a very flexible macro lens.
So if you already own a 50mm, 85mm and 150mm, or zooms that cover those focal lengths then you can pretty much have a macro lens for every occasion for less than the price of one such macro lens.
Plus, you'd need a whole new camera bag to carry that many macro lenses. These extension tubes are about the size of a small lens and much much lighter!... Read more ›
17 of 17 people found the following review helpful
By Darran
Amazon Verified Purchase
Very happy with this purchase, I can now focus much closer without having a dedicated macro lens.
You do need to keep in mind that changing the focal length will cause it to go out of focus and that the depth of field is reduced although that is probably what you are looking for if using these anyway and that would apply equally to all makes of extension tubes.
On my Nikon D5000 using this tubes I also get full AF-S auto focus on every one of my lenses.
You do need to keep in mind that changing the focal length will cause it to go out of focus and that the depth of field is reduced although that is probably what you are looking for if using these anyway and that would apply equally to all makes of extension tubes.
On my Nikon D5000 using this tubes I also get full AF-S auto focus on every one of my lenses.
11 of 11 people found the following review helpful
By S. K. Das
The extension tubes are easy to use and very effective. I use the tubes with my sigma 180 mm 1:1 macro and get very good results. The quality of image doesn't suffer at all.
6 of 6 people found the following review helpful
By Peter Bailey
Amazon Verified Purchase
Whilst being the most expensive option for a set of extension tubes I feel comfortable that the product is well made and fits snugly on the camera and lens.
I have used it, so far, with a 105mm f2.0 prime lens and a 200m zoom and have some satisfying results. Contrary to claims the autofocus function, even in bright illumination, does not work effectively or at all.
This is not a huge disadvantage as for most practical situations the use of manual focus is preferable in order to cope with the very limited focus range and to select the preferred centre of maximum sharpness.
In my opinion this purchase is probably the best cost/quality effective way of entering a serious attempt at 'macro' photography and the price justified vs. some of the cheaper, less well engineered alternatives.
I have used it, so far, with a 105mm f2.0 prime lens and a 200m zoom and have some satisfying results. Contrary to claims the autofocus function, even in bright illumination, does not work effectively or at all.
This is not a huge disadvantage as for most practical situations the use of manual focus is preferable in order to cope with the very limited focus range and to select the preferred centre of maximum sharpness.
In my opinion this purchase is probably the best cost/quality effective way of entering a serious attempt at 'macro' photography and the price justified vs. some of the cheaper, less well engineered alternatives.
13 of 14 people found the following review helpful
By Tim Kidner
TOP 500 REVIEWER
Extension tubes work by moving the point of focus closer and can be used with any lens with a focal length (m.m.) from standard upward. Coming in three different sizes (12mm, 20mm, 36mm) they can be fitted individually or all three. Having no glass elements (they are hollow) they do NOT affect image quality of the host lens.
In olden (film) days adding an extension tube (they used to be also known as extension rings) to the then standard 50mm f1.7 or 1.8 lens was a good, cheap start for schoolboy snappers as myself into the world of macro photography. Times have moved on, though - independent lens makers especially now produce auto-focus 'fool-proof' purpose designed macro lenses, often with some sort of vibration control added as a bonus. These are quite costly but are of excellent optical quality.
For those who don't want, or can't, spend the £300-400 on such or are unsure if the world of macro is for them, a set of well made 'tubes, such as these, make a lot of practical sense. Those wanting minimal size and weight, for flying, for example, will find, say two pieces from the set will achieve quite a saving in that respect.
This set of Kenko tubes came up immediately after I Googled 'Nikon fit extension tubes' and so are probably the market leaders. I spent many months trying to get a second-hand set of any sort, but to no avail. These Kenko's are fully up to the job, being solidly made and have nice rubberised grips. DON'T be tempted by cheaper ones - you need the electrical contacts in each for auto metering and for A/F to work properly on all 3 tubes. With my Tamron 90mm f2.8 life-size (which I also review on Amazon) I can get around FIVE times life-size, which is extreme close-up indeed.... Read more ›
In olden (film) days adding an extension tube (they used to be also known as extension rings) to the then standard 50mm f1.7 or 1.8 lens was a good, cheap start for schoolboy snappers as myself into the world of macro photography. Times have moved on, though - independent lens makers especially now produce auto-focus 'fool-proof' purpose designed macro lenses, often with some sort of vibration control added as a bonus. These are quite costly but are of excellent optical quality.
For those who don't want, or can't, spend the £300-400 on such or are unsure if the world of macro is for them, a set of well made 'tubes, such as these, make a lot of practical sense. Those wanting minimal size and weight, for flying, for example, will find, say two pieces from the set will achieve quite a saving in that respect.
This set of Kenko tubes came up immediately after I Googled 'Nikon fit extension tubes' and so are probably the market leaders. I spent many months trying to get a second-hand set of any sort, but to no avail. These Kenko's are fully up to the job, being solidly made and have nice rubberised grips. DON'T be tempted by cheaper ones - you need the electrical contacts in each for auto metering and for A/F to work properly on all 3 tubes. With my Tamron 90mm f2.8 life-size (which I also review on Amazon) I can get around FIVE times life-size, which is extreme close-up indeed.... Read more ›
3 of 3 people found the following review helpful
By Agglestone
I wanted to get into the. world of Macro photography, relatively cheapliy, I usd the extenson tubes with a Sigma 50-150 2.8 lens and used the zoom ring to fine tune the focus.
Theese tubes have electronc contacts unlike cheaper options and for me the automatic TTL metering this enabled was a must have. I have no problem with manual focus for macro and would recommened use of it, even thou these tubes will allow it. No optics so as good as the lens you use with it except tubes will effect the light reaching the camera so you might want to think about ring flash if you want to remain mobile and donn't want to lug a tripod around. I did go for a ring flash option as I was after insects.
The 3 tubes can be used in any combination and a forth tube can be bought also.
Theese tubes have electronc contacts unlike cheaper options and for me the automatic TTL metering this enabled was a must have. I have no problem with manual focus for macro and would recommened use of it, even thou these tubes will allow it. No optics so as good as the lens you use with it except tubes will effect the light reaching the camera so you might want to think about ring flash if you want to remain mobile and donn't want to lug a tripod around. I did go for a ring flash option as I was after insects.
The 3 tubes can be used in any combination and a forth tube can be bought also.
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Most Recent Customer Reviews
5.0 out of 5 stars
Extension Tubes
As these are the first and only extension tubes I have ever owned giving them five stars is a little over the top, as I'm not comparing with a similar product. Read more
Published 1 month ago by David
5.0 out of 5 stars
Kenko DG Auto Extension Tube set,
The Kenco extention set is well engineered and is an excellent fit to my Nikon D 3s, using a 150mm 2. Read more
Published 3 months ago by Hawkeye
5.0 out of 5 stars
At that price they are wonderful.
I could not expect more from these than I would do from Nikon's own but I am very satisfied. I think that cheaper extension tubes that loose the camera's automatic would not... Read more
Published 3 months ago by bagtjesen
3.0 out of 5 stars
Ok, but a little loose when stacked
Works fine individually - when stacked - and with heavy lenses there is too much play.
Great fun and yields much better results than a teleconverter.
Great fun and yields much better results than a teleconverter.
Published 5 months ago by Jesper Andersen
5.0 out of 5 stars
Excellent Value
If you are unsure about macro photography give these a go I use these with a 50mm prime lens and get great resultsKenko DG Auto Extension Tube Set for the Nikon AF Mount
Published 22 months ago by Anthony
5.0 out of 5 stars
Awesome Extension Tube
I know it is costly in respect to extension tube but guys believe me spend this money on this. If you are serious about macro photography never buy cheap extension tube. Read more
Published on 18 Jun 2011 by Indrasish
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