There are four different types of digital cameras to choose from. Ultra compact and compact are light weight and small enough to carry around in your pocket or purse. Full size and Digital SLR cameras are larger and not as easy to carry around. The different types of cameras also have different levels of optical zoom. (more…)
Aperture is how a lens controls the amount of light that comes through into the camera. F-Stop is a description of how much light is being allowed in. The smaller the F-Stop value the larger the opening (aperture). Aperture size is usually calibrated in f-numbers or f-stops. (more…)
This video from the Discovery Channel shows how a camera lends is made.
It all starts with a design. A diamond blade slices up a block of optical glass. A drill cuts the glass into disks. Optical glass is very expensive. A device spins one of the disks while a wheel overhead sculpts it into a lens. Each lens is checked for chips. (more…)