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How Corrective Lenses Work
science.howstuffworks.com/innovation/everyday-innovations/lens.htm
Eyeglasses are one of the most common sights in the world. Learn what goes into creating the lenses and how to read an eyeglass prescription.
What is fisheye lens photography?
electronics.howstuffworks.com/cameras-photography/tips/fisheye-lens-photography.htm
Look through a door's peephole and you'll see how a fisheye lens can distort a scene while providing a 180-degree view. So how are fisheye lenses used?
What is a tilt-shift photography lens?
electronics.howstuffworks.com/cameras-photography/tips/tilt-shift-photography-lens.htm
Tilt-shift photography takes the power of the angle to an extreme. Learn how tilt-shift photography can make a normal scene look like a miniature model set.
How Does a Fresnel Lens Work? The Magic Behind the Glass
science.howstuffworks.com/question244.htm
I have a thin piece of plastic mounted on the back window of my RV. It magnifies things so I can see better when I'm backing up. How can such a thin piece of plastic magnify things? A regular glass magnifying lens would have to be curved on both sides and much thicker.
How Refractive Vision Problems Work
health.howstuffworks.com/human-body/systems/eye/vision-refractive.htm
Millions of people have refractive vision problems -- when the eyes get blurry or can't focus on an object. Learn about four major types of refractive vision problems.
How Cameras Work
electronics.howstuffworks.com/camera.htm
Cameras and photography have transformed how we see the world. Learn about cameras, photography, how 35mm cameras work and about making a homemade camera.
What Is Aperture?
electronics.howstuffworks.com/cameras-photography/tips/aperture.htm
Aperture is a photography term and it is something you can adjust when taking pictures. Visit HowStuffWorks to learn all abut aperture.
How Light Microscopes Work
science.howstuffworks.com/light-microscope.htm
The human eye misses a lot -- enter the incredible world of the microscopic! Explore how a light microscope works.
How the Lytro Camera Works
electronics.howstuffworks.com/cameras-photography/digital/lytro-camera.htm
The Lytro camera lets viewers focus on different aspects of a photo after it has been taken. See how the Lytro camera works.
My glasses have an anti-reflective coating. How does that work?
science.howstuffworks.com/innovation/science-questions/question615.htm
My glasses have an anti-reflective coating. How does that work?