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Join Chad Perkins, an author and videographer, as he introduces the essential concepts and techniques necessary for shooting video with a DSLR camera. Targeted at beginning videographers and anyone interested in shooting better video, this course covers cinematography basics, DSLR pitfalls, important gear, and postproduction workflow. Along the way, discover how to choose lenses, record audio, and make shots more professional.
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Chad Perkins: Lenses are essentially grouped into two basic categories: wide and long, or in other words, telephoto. Brian Liepe: Normal lenses have a focal length of about 35 mm to 50 mm. Now the term normal just means it has a field of view that is closest to the way we see, with our eyes. Now the field of view is just how much of your scene is visible to the lens. Now anything lower than a 30 mm is a wide lens.
Wide angle lenses are great for big landscapes or sweeping vistas. They are also really great about providing you with a great depth of field or everything in focus. Chad Perkins: I also tend to use wide-angle lenses when I want a subject to be particularly comedic, or scary, or otherwise just look ridiculous, because as you get a subject closer to the lens, when you're using a wide angle lens. Then things tend to distort, which can be really cool and a great effect if that's what you're are going for, but if you're trying to make someone look good be really careful with this effect, because facial features and other things tend to get distorted as you get closer to the lens.
See right here that's, that's not good. That's not good. So avoid that at all cost if you are trying it again makes somebody look good. Brian Liepe: Exactly! Wide angle lenses also have a tendency to exaggerate the distance between objects. So if you are shooting a horror film and someone's running from the villain, you can exaggerate the movements of the villain and his speed with the wide-angle lens. Chad Perkins: I also like to use wide angles when I'm using cameras with a crop sensor like this Canon 7D here.
The crop factor on these lenses are 1 and a 1/2 times what they would on a camera with a full frame sensor, like the Canon 5D. So a 50 mm lens on a Canon 7D would have about the same field of view as a 75 mm lens on a Canon 5D. Brian Liepe: One thing to keep in mind when you're shooting with the wide angle lens, is something called lens distortion. This occurs in corners of the frame, where a line that's meant to be straight actually takes on circular characteristics; it's a little bit curved.
It could create a cool effect, but usually it's undesirable, especially when you're using a lot of compositing or visual effects. Note that this is less of an issue in higher end glass like the Canon L-series or this Zeiss ZE18 mm. Next, we're going to look at the other side of the coin, long or telephoto lenses.
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