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Chad Perkins: In my mind, adjusting the ISO is just a really dangerous thing to do, or at least increasing the ISO is, and the reason why is because as you increase the ISO, you're making the sensor more sensitive to light which sounds good and it has its benefits, but also creates a much more noisy image. Brian Liepe: DSLR noise is super ugly. It moves poorly. It's got wonky colors. It's not monochromatic and it's just best to avoid it if at all possible.
And later on in this training we'll look at some ways that you can decrease the amount of noise in your footage through some post-effects. But again, let's just try to avoid it when we're shooting. Chad Perkins: Now another thing that happens when you raise the ISO is that the colors become less saturated and just off a little bit. And because of the extreme compression that DSLR files go through, there is really not that much you can do about it in post. Brian Liepe: So if you are pressed for light in a certain situation and you do crank up your ISO, but it doesn't look like it has affected your image much because the monitor you're using doesn't show it, or your LCD screen doesn't show it because it's too small, just know that in post, when you look at that footage at its full resolution, you're going to see some ugly noise.
Later in this training we're going to look at something called native ISO, and that's an ISO setting that works best for that specific camera and creates the best quality image with the least amount of noise. So yeah, remember when your boost ISO you're going to get noise, but it could help you out in low light situations.
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