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2 Bending light

2.1 Putting glass to work

So how does a lens capture light at your bidding?

Each camera lens has innate optical properties determined by its designer. Optical engineers put tremendous effort into choosing the shape, number, arrangement, material, and size of each lens component in order to produce a photographic lens with the desired imaging characteristics. This chapter describes some key optical properties.

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2.2 Refraction

Photographic lenses must take light coming in from a scene and then narrow it down precisely to a tiny piece ...

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