Foundations of Photography: Lenses [repost]

Many of the creative options available to a photographer hinge on an in-depth understanding of lenses. In Foundations of Photography: Lenses, Ben Long shows how to choose lenses and take full advantage of their creative options. The course covers fundamental concepts that apply to any camera, such as focal length and camera position, and shows how to evaluate and shop for DSLR lenses. The second half of the course focuses on shooting techniques: controlling autofocus, working with different focal lengths, and managing distortion and flare. The course also examines various filters and contains tips on cleaning and maintaining lenses.

Topics include:
Understanding field of view and camera position
Depth of field and lens choice
How to choose a lens
Examining lens features
Using specialized lenses such as fisheye and tilt/shift lenses
Focusing techniques
Using filters
Camera maintenance

Content:
1. Introduction
Welcome 01:23
Who is this course for? 01:34
Why does the lens matter? 02:36
Changing lenses 03:43
A word about camera brands 01:53
2. What Is a Lens?
What is a lens? 03:51
Field of view 02:36
Image sensors and field of view 01:21
Focal length multipliers 05:42
Primes and zooms 02:02
3. Focal Length, Camera Position, and Composition
Focal length, camera position, and composition 04:01
Exercise: Taking ugly self-portraits 03:23
Shooting wide 07:02
Shooting telephoto 08:09
Focal length applications 01:59
4. Depth of Field
Depth of field (DOF) 05:02
DOF and sensor size 01:50
DOF and background size 02:05
Deep DOF and diffraction artifacts 03:44
5. Choosing a Lens
Choosing a lens 07:11
Lenses for crop sensor cameras 04:25
Image quality 04:10
Lens features 06:42
Size and weight 06:31
Lens notes for Micro Four Thirds 07:06
Specialty lenses 05:09
Where to buy 02:54
Lens caps 01:28
6. Advanced Autofocus
Focus point selection 05:54
Center-point auto-focus 03:51
Servo focus 03:46
Focus troubleshooting: What to do when your auto-focus doesn't 02:03
Filters 05:46
Auto-focus and live view 05:02
7. Conclusion
Maintenance 14:40
Micro-focus adjustments 01:31
Goodbye 00:59