"lens" nach Englisch mit Beispielen - Kollokationen-Wörterbuch Englisch
- It uses a simple rotary shutter with meniscus lens, and does not have a viewfinder.
- A negative meniscus lens has a steeper concave surface and will be thinner at the centre than at the periphery.
- To obtain exactly zero optical power, a meniscus lens must have slightly unequal curvatures to account for the effect of the lens' thickness.
- Double-meniscus anastigmats use widely separated positive and negative surfaces, generally thick meniscus lenses, to achieve a flat field.
- Further refinement of the form replaces the two simple meniscus lenses with achromats for chromatic correction.
- There are Maksutov variations that use the same principle but place the meniscus lens as a sub-aperture corrector near the focus of the objective.
- The 1955 model came with a meniscus lens, later replaced with an achromatic lens.
- In 1804 William Hyde Wollaston invented a positive meniscus lens for eyeglasses.
- It consisting of a small meniscus lens and Mangin mirror as its "secondary mirror".
- Like any simple meniscus lens, the Holga lens exhibits soft focus and chromatic aberration.
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