CCDs
Charge Coupled Device – One type of sensor found in digital cameras.
Exposure
Exposure is getting the right amount of light gets to your film or digital sensor to achieve the photograph you’re going for. There is no such thing as ‘correct exposure’ because the look you’re going for determines that. However, by and large, we talk about correct exposure as making a gray card turn up the right shade of gray. (Gray cards are bits of card that have been painted a particular industry standard shade of gray, and they are ridiculously overpriced).
There are three elements to exposure: Aperture, Shutter Speed and ISO.
Aperture refers to the size of the opening in the lens that allows light through.
Shutter Speed is the length of time that the sensor is exposed to light.
ISO is a sensitivity rating for the film or digital sensor.
Each of these factors will affect the resulting exposure of your photograph.
Megapixel (MP)
A unit, meaning millions-of-pixels e.g. 5MP = 5 million pixels. {I think it’s millions; might be wrong âmattw} {Yes, it is millions of pixels –david}
Film
A piece of acetate laced with silver nitrate which when exposed to light then developed will hold an image. This is the old stuff. People still use this magical plastic, but it’s a lot like vinyl — restricted to the purists.
Lens
The bit of glass that the light goes through to get to your Film/Sensor. This focuses the light to form an image on the sensor. For more information on why this matters, check out Lenses
