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Corrective lenses for myopia have negative powers because a divergent lens is required to move the far point of focus out to the distance. More severe myopia needs lens powers further from zero (more negative). However, strong eyeglass prescriptions create distortions such as prismatic movement and chromatic aberration.
The Photomic series of prisms, which was initially designed with a direct coupled-metering CdS photocell (2 models were produced). The Photomic prism head later evolved to include the Photomic T with TTL in 1965, a behind-the-lens metering prism head which metered an averaging pattern of the focusing screen.
The human eye is a sensory organ in the visual system that reacts to visible light allowing eyesight. Other functions include maintaining the circadian rhythm, and keeping balance. Arizona Eye Model. "A" is accommodation in diopters. The eye can be considered as a living optical device. It is approximately spherical in shape, with its outer ...
Paris Hilton and son Phoenix. Paris Hilton is impressed by her son Phoenix ’s throwing skills! On Sunday, Sept. 22, the media personality, 43, posted an adorable clip of her 20-month-old son ...
Sarah Michelle Gellar’s daughter Charlotte Grace is jumping for joy!. To mark the teenager’s 15th birthday on Thursday, Sept. 19, Gellar, 47, shared a rare video of her daughter showing off ...
Chunked: Hash browns peppered with pieces of diced ham. Diced: On the flip side, this order refers to hash browns with diced tomatoes. Peppered: Here’s a fairly intuitive one; these hash browns ...
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