Thursday, September 19, 2013

Camera Lenses: Narrowing Down the Choices – PictureCorrect

Camera Lenses: Narrowing Down the Choices – PictureCorrect: "First of all, what is focal length? According to the textbook definition, “focal length is measured in millimeters (mm), and it represents the distance from the optical center of a lens to the digital camera sensor when the subject of the photo is in focus.”"

'via Blog this'

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