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Kenko Auto Extension Tube Set DG 12mm, 20mm, and 36mm Tubes for Nikon AF Digital and Film Cameras - AEXRUBEDGN
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- Designed to enable a lens to focus closer than its normal set
- Very Useful for Macro Photography
- The Extension Tubes have no optics
- Focus Closer to the objects you see and enjoy the feel of photography
- Auto Extension Tube Set for the Nikon AF Mount
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|Package Height||2.7 x 2.8 x 3.8 inches|
|Shipping Weight||0.45 pounds|
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This item Kenko Auto Extension Tube Set DG 12mm, 20mm, and 36mm Tubes for Nikon AF Digital and Film Cameras - AEXRUBEDGN
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|Sold By||Photo Savings||Mcoplus Digital||K&M Camera Since 1976||Amazon.com||Success Trader||eCostConnection|
|Item Dimensions||—||—||2.5 x 2.75 x 2.75 in||3.15 x 3.15 x 1.77 in||—||2.5 x 2.6 x 3.2 in|
Designed to enable a lens to focus closer than its normal set Very Useful for Macro Photography The Extension Tubes have no optics Focus Closer to the objects you see and enjoy the feel of photography Auto Extension Tube Set for the Nikon AF Mount
Top customer reviews
Since this is my first experience with using extension tube, I am quickly learning that with tubes you loose the ability to continue focus with your lens, thus I went back to my 90mm Tamron.
With one, two, or all three rings and a relatively small lens that you'd likely use with this camera (such as a AF-S f/1.8 prime) everything feels solid, no flexing, and AF-S (motor in lens) autofocus works fine. No issues noted at all. Everything OK.
Placing all three rings and a Nikkor 80-300mm AF-S zoom lens on the camera (probably the heaviest one I have), I can discern some slight flexing between the rings if I don't support the weight of the lens, but I'm not sure it's really enough to have much effect on image quality, and the rings aren't terribly useful with this sort of lens anyway. (I'm unlikely to actually use this lens with them; I just attached it for weight testing.) Autofocus still works just fine on the 80mm-300mm AF-S with all three rings. No electronic failures or other problems noted.
I also attached a heavy, fast, glass-laden Nikkor 35mm-70mm AF f/2.8D lens with all three rings. I set the lens to 70mm, hit autofocus, and the autofocus screw drive worked through all three rings (though it was sounding a bit taxed) and the camera was able to autofocus on a subject. As with the 80-300mm there was a tiny bit of flex in the rings, but I'd call it barely noticeable.
Though the screw drive seemed to work OK with all three rings and the heavy 35-70mm f/2.8 AF, the mechanical thing that keeps the lens aperture open until shutter release seemed to be having some problems. Several times, the viewfinder went dark (as though it were in DoF preview) and the camera shut itself off probably as some sort of failsafe. To recover I had to switch the camera off and back on again. This happened 5 or 6 times but the problem seems to have stopped after I jiggled the rings and lens around a bit to try to loosen up the linkages.
So basically, I feel that these extension tubes are perfectly good for typical applications with AF-S lenses. I'm not sure it's a good idea to use all three rings with a heavy AF lens, though. One or two might be OK, or maybe these things just aren't that reliable with mechanical linkage focus/aperture AF lenses. At the moment this isn't a big issue for me though as I don't really plan to use them with AF lenses, and I have a real macro lens that I use the vast majority of the time.
Overall, I'm sure these extension tubes are OK for the money if you're using AF-S lenses. For all I know, most AF lenses might be OK too (maybe this one, the only one I have, is just really heavy or there's something odd about it), but I have much lower confidence in their suitability for AF lenses. Heavy lenses + all three rings may be a problem but I don't know for sure because I haven't actually tested image quality very thoroughly to know if there's any significant tilt introduced by what feels like a slight flexing.
I'm not sure how they compare to the official Nikon extension tubes. For all I know it's possible that those have some of the same problems and aren't much better. If in doubt, and you need to use AF lenses, I'd say get the Nikon rings.
(Also: Some people have stated that they feel the rings are very poorly constructed. Well, I can't compare because I haven't seen any other ones to compare them to, but keep in mind that the "rattling parts" in the rings are supposed to move freely and are not an indication of things coming apart inside the rings.)
On the lens I've been using them with the working range is 85mm to about 35mm, any wider and the focal point winds up inside the lens.
Hand held focusing is extremely difficult and, at least with the lens I'm using I've been getting soft images and a bit of chromatic aberration. I suspect that this is a combination of me not having picked up the right technique and of the lens being asked to do something it's not designed for.
I'd suggest not stacking them all on when shooting hand held, stick with the thinner ones, use a tripod if you stack all of them on, and don't expect to take perfect shots right away.
Yes these extension tubes are plastic and yes they will flex if you put a heavy lens on them. If I ever decide to use them on my 300mm lens I'd want to brace both the camera and the lens, although I can't see what the advantage would be of putting them on a long lens when I could just use a short lens without the tubes for the same effect.