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What You Need to Know About Facial Recognition at Airports

on February 26, 2022

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By BY ELAINE GLUSAC from NYT Travel https://ift.tt/2A1p0Kn
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Working with Different Focal Lengths for Macro Photography

At some point in your photography journey you may be fascinated by pictures capturing living creatures in great detail, flowers close-up, and in general intimate vistas, which may go unnoticed in our daily viewing habits. Such shots are commonly described as macro photography. The purpose of this article is to provide you with theoretical and practical insight, to help you select lenses for macro photography with focal lengths suitable for your style. What is macro photography? The Collins English Dictionary defines macrophotography as: extremely close-up photography in which the image on the film is as large as, or larger than, the object. Extending this definition into the world of digital, the word “film” can be replaced by “sensor”. The terms magnification and reproduction ratio (RR) are two ways of quantifying this definition. They describe how big the capture on the sensor is as compared with the subject you are photographing. “As large as” means that whatever object is ca...

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What You Need to Know About Facial Recognition at Airports

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