lens-accessories Extension Tube Free Useful Guideline

These seem to be well made extension tubes. With all three stacked behind my lens, they still allowed the autofocus to function (albeit slowly). You lose a few stops of lens speed with these attached, so unless you are using your flash as an autofocus assist beam you will notice considerable slowing of the focusing.

But, since most extreme macro work is focused manually (I use live view on my Rebel XS) the only real need for electrical contacts is for aperture control, and that works perfectly, stopping down the lens to your chosen setting for the shot.

I like that the rings have metal connections rather than plastic. They feel solidly built. They attach to the camera and lens firmly.

Using a 28-80 kit lens that came with my old Rebel 2000 film camera, I was able to focus so close that I focused on dust on the UV protector filter I had on the end of the lens.

I took a photo of my wife’s wedding ring and was able to fill the entire field of view with the ring. I have been using very long exposures with the smallest aperture in order to get the greatest depth of field, but even then it is pretty shallow with all three tubes stacked together.

I tried a 75-300 zoom with these and I was able to focus about 2 feet away from the subject. (Which is far better than the lens’ usual minimum focusing distance).

The 7 different lengths you can achieve with these three rings will give a lot of versatility.

Why spend more for Kenko tubes or an expensive bellows that doesn’t allow for auto aperture? Save your money for an internal focusing lens to hang on the end of these rings that can support a ring flash. Many Canon lenses have rotating and extending front elements that make mounting a ring flash trickier.


Help answer the question about Extension Tube
what do you think using macro lens with extension tube..??
Do the extension tube interfere something in the lens..?? what about the picture quality..??
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Nikon PK 11A - Extension tube
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Kenko DG Auto Extension Tube Set for the Nikon AF Mount.
Kenko DG Auto Extension Tube Set for the Canon EOS AF Mount.
Nikon PK 13 - Extension tube
Olympus EX-25mm Macro Extension Tube for E1, E300 & E500 Digital SLR Cameras
Orion 1.25
Opteka Auto Focus DG Macro Extension Tube Set for Nikon D3, D3S, D3X, D40, D40x, D50, D60, D70, D80, D90, D100, D200, D300, D700, D3000 & D5000 SLR Cameras
Opteka Auto Focus DG Macro Extension Tube Set for Canon EOS 1D, 5D, 7D, 10D, 20D, 30D, 40D, 50D, Digital Rebel XT, XTi, XS, XSi, T1i & T2i SLR Cameras
Canon EF 12 II Extension Tube For EOS Digital Cameras

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Extension Tube Free Useful Guideline

lens-accessories Extension Tube Free Useful Guideline