Join Ben Long for an in-depth discussion in this video Autofocus basics, part of Photography Foundations: Exposure (part 1).
- As you may recall from high school biology class,…there are two types of light-sensitive cells in your eyes,…rods and cones.…Cones are the color-sensitive cells, and most of the cones…in your eye are gathered into a very small area…at the back of your eye called the fovea.…The fovea is responsible for the focused part…of your field of view.…Now, it's not immediately obvious, but the only part…of your entire field of view that is actually in focus…is an area roughly the size of the tip of your thumb…when it's held at arm's length.…That's this little bit, right here.…
Now, if you don't believe that, give this a try.…Get a piece of paper that has some text on it,…I've just torn a page from a magazine, you can rip one…out of a book or something.…Hold at arm's length, and put your thumb…over some of the text.…Now, without taking your eyes off of your thumb,…keep them locked there,…pay attention to the text that's around your thumb.…You'll realize you can't read it, it's out of focus,…and you may say, well of course I can't read it,…
Note: This course is designed to work with any digital camera, but it is easier to follow along using a digital SLR or mirrorless camera.
- What is exposure?
- Modern camera anatomy
- Shutter, aperture, and ISO
- Light metering
- Changing shutter speed and aperture
- Exposure compensation
- Light meters
Skill Level Beginner
Learning Natural Light Portrait Photographywith Chris Orwig2h 30m Intermediate
A word about camera brands3m 19s
1. Exposure Fundamentals
2. Camera Anatomy
3. Basic Metering and Exposing
4. Dynamic Range
5. Exposure Compensation
6. Light Meters and Autofocus
Where to go next3m 34s
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