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The ability to adjust your ISO on your digital camera is one of the greatest things about digital. Back in the days of film, we had to buy a roll of film for a specific ISO setting like 200, 400, 800 or whatever, and then we were stuck with that ISO for the duration of the film, so for 24 or 36 pictures. But now with digital, we can change it whenever we want to and that's really convenient. So for example, here we are at the front of this church and it's getting dark out. We're under the shadow, it's just really dark in here. And if I try to shoot this at an ISO of 400, which is where I've been earlier today, it's probably not going to work. Let's see what happens.
(audio playing) And you could probably hear that. It was a really long exposure, almost half a second long. There's no way that I can handhold that, and as you can see from the photo, it's just a bit blurry. It's just not possible so let's take the ISO up a bit and see if we can make this a bit better. I'm going to go ahead and bring this all the way up to twelve hundred ISO. And let's see what this looks like. So there we were able to shoot it at an eighth of a second which is a lot faster but still kind of boarder line for hand holding it.
So let's take it up even a little bit farther and see how that works out. I'm going to take this all the way up to 3200 ISO, and now I was able to shoot that at a 15th of a second. Now, that is hand-holdable if you concentrate on it. Thirtieth of a second is usually the slowest but if you really know what you're doing if you're really careful you can do a fifteenth. So that's what the ISO gives you. Keep in mind as you raise that number you are going to be introducing digital noise kind of like a grain pattern in to your pictures.
The new slr's are amazing at high technology. The high ISO speed looks absolutely incredible in the new DSLR. So you may find that you can shoot at 1600 or even higher without any problem, without noticing the grain in your pictures.
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