Differences in Film ISO

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An ISO refers to how sensitive your film is going to be to a light source. Learn about the differences in film ISO with help from a director of photography in this free video clip.

Part of the Video Series: Photography Basics
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Video Transcript

Hi, I'm Dan Reinecke with Unknown Media. Today, let's talk about differences in film ISO. Now, differences in film ISO is going to be very similar to the differences in SLR ISO. Now, the thing that it's actually talking about is going to be how sensitive that either the film or your image sensors are actually going to be to the light. So, the differences are, say you have a 100 ISO. That's going to mean it's going to be a lot less sensitive to light. Meaning you're going to need a lot of more light to fall onto your negative or your, or your image sensor to actually expose the image itself. Say a higher ISO, maybe 500 or even a 1000, that's going to be a lot more sensitive to light, meaning you're going to need a lot less light to actually expose the image. So, when it comes to the differences in ISO's, just remember the higher up you go, the less light you're going to need. I'm Dan Reinecke, take your best shot.

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