Lens Accessories: Extension Tubes
And so next up, we have extension tubes, so extension tubes are a great way to dabble in the world of macro photography. So if you're interested not fully set on macro photography, but you're interested in macro photography. The extension tubes, I think, are the best way to dabble in close up photography. There's a number of different tubes out there, and what's interesting is these are tubes. They're not lenses. There's no glass elements in here at all. They're just hollow tubes designed to move the camera away from the lens. So here we have a camera and a 72 200 lands. We're gonna add a 12 millimeter extension tube in between the body and the lands, and that's gonna enable us to focus up a little bit closer. We can add in a bigger tube, which will enable us to focus even closer. And because there's no glass elements, we can add multiple tubes at the same time and continue to keep our sharpness all the while getting closer and closer on our subjects. So I wanted to do a little test on...
what is the difference. And so this is what you see with a standard 72 200 F four at its closest focusing. And then when we add a 12 millimeter then the two tubes together it is reducing, are focusing distance between the camera and are subject, which means our magnification is increasing. So if you want to get a little bit closer, these do a great job because they're cheap. They're small, they're lightweight and they don't change the image quality because there's no glass elements in there. However, as nice as they are, they are still no comparison for an actual macro lens for getting pure close up really close up. So if you know you really need to get up close, the macro lens, which we're gonna get into in a later section, is the best way to do it. But this is a nice way to increase your ability to get close up. One of the other things that's really nice about this is that you can add these tubes to any lens that you own. All right now, it doesn't work real well on wide angle lenses, but it does work very well on normal the telephoto lenses. And so if you have a te 400 millimeter lands that has a minimum focusing distance of, let's say, eight feet. You could bring that down to three feet if you want a really tight shot. And so there's a number of cases where I've used it on one of these big white lenses because the minimum distance on this 800 millimeter lens let me just take a look at it is six meters. That's pretty far away. And so if you wanted to cut that in half, you could do so. Let's say you had a hummingbird feeder just outside the window that was only eight feet away. You could add extension tubes and get that lends to focus closer. And so, as I say, you can use that with any lenses. They typically don't do real well on white angle lenses because it brings the focus point somewhere inside the lens. So you see nothing in focus and so normal to telephoto lenses works very, very well on that. Now, when you do use these, when you move the lens further away from the camera body, you are letting in less light to your camera cause it needs to travel further from your lens through your lens. And so there is an exposure adjustment, so you can't just figure out what the exposure is. Add in a bunch of extension tubes and then take the picture. You better figure out that exposure after the fact and these extension tubes, and I think I got at least one of them over here. These extension tubes have electron ICS on them, and so they pass forward all the exposure information and all the focusing information. And so these newest ones are auto focus. That stays the same, and it passes through all the electron ICS on there. Now I bring upon the keynote the next life. The there is a number of options. The one that I have here in my hand is a cannon extension tube. And there are aftermarket once and for image quality. They're the same because there's no glass in there. Okay, but why did I get the cannon ones? Well, I felt that these were a little bit better quality made, and I knew they had a little bit better resell value, so it was a small investment. I'll get that investment back when I end up selling this to somebody else somewhere down the road. And so these air really good values because they give you three of them in a package for about 100 50 bucks. And so if you want to dabble into it, by all means, I highly recommend it.