Lens Accessories: Extension Tubes
So extension tube's are a great way to play around and experiment with macro photography and so these are the ones that are available from nikon and I actually talked to a colleague of mine who runs a camera shop and he was saying we've sold one of these in the last year and it's because that you can buy aftermarket versions these are just extension tube's that allow you to move the lens further from the body and he says we sell a lot more of these kinko or these aftermarket brands because we're not worried about image quality here all we're doing is moving the lens away from the camera bodies so these air hollow tubes various different links no glasses in the middle so it's all about just mechanical quality of holding the lens to the body nice and firmly and so the idea is is that there is a minimum focusing distance on every lance and if you want to get closer than that minimum distance you need to move the camera body away from the from the lens so for instance these kinko lenses wi...
ll kick off extension tube's will come in a pack of three they'll have a twelve millimeter too twenty and thirty six and because there's no glass in here you can adam up if you want you can use the twelve in the thirty six to get forty eight twelve to twenty and thirty six and just adam all up. Now, of course, how much difference does this make that's the big question, so I decided to do first a shot with a seventy two, two hundred to eight without any sort of extension, and then I used a variety of the extension tube's on the camera and you can see how much closer we can get in, and the great thing about having three different tubes in this case is that you can add them up as necessary according to your needs. Now, once you put on any tube or any combination of tubes, you can no longer focus on infinity, so you can't just extend the range of your lens. You're moving the range closer and giving up infinity while you have it attached, but this is a great way to do it because it's not much money it's, not much weight it's very high image quality there's, very few trade offs and doing this and so it's a great way of experimenting with close up if you think you want to get a macro lens, but you're not sure get a set of extension tube's play around and when you get your macro lens, if you do go that direction, you can use macro lenses and the extension tube's together to get even closer so you can use these on any lands now they typically work best on a fifty millimeter and up telephoto lenses but you can technically use him on any lands because they fit all the lenses so nikon has there own individual ones they're sold for about a hundred bucks apiece and they have three different sizes of the eight fourteen and twenty seven point five the kinko's and some of the after market brands will sell for about one hundred fifty for all three so it's fifty percent more but it's three times as many of the products so they're relatively cheap small lightweight you could bring them you can use them on all the different lenses and it's his sharp is your lens normally is so it doesn't degrade that sharpness at all warning though anytime you move the land's further from the film plane you are reducing the amount of light getting to the film plane and so you need to do your exposure adjustments with this on your camera don't do your exposure adjustment before and then just go well now we'll just add an extension tio and shoot at the same exposure and so if you're using studio lights, you may need to change the power of those lights or if you're out shooting out in the field, you'll need to change your shutter speeds or apertures or so a couple of the aftermarket ones that you can play around with velo and kinko make some that are pretty affordable they also have the electronics in it so that they are. At least you should check to see if they have the electronics. And because there are ones that air do not. This will pass along the information about what focal length you're using, what aperture lens and so forth, so that information will be added to the metadata. It's not necessary. It doesn't impact image quality. But it's a nice, convenient thing to have that accurate information from the lens passed to the camera body as well.