Like all other types of batteries, Li-ion batteries will wear down over time, holding less and less charge. Apple says its laptop batteries will reach 80% of their original capacity after âup toâ 1000 full discharge cycles. Other manufacturers commonly rate their batteries 300 to 500 cycles.
A digital single-lens reflex camera (also called a digital SLR or DSLR) is a digital camera that combines the optics and the mechanisms of a single-lens reflex camera with a digital imaging sensor, as opposed to photographic film.
The Electro-Optic Camera. The World's First DSLR. The Electro-Optic Camera was designed and constructed by Eastman Kodak Company under a U.S. Government contract in 1987 and 1988. Kodak's Microelectronics Technology Division (MTD) had announced the first megapixel CCD in 1986.