Lesson 4 Define the terms principal axis, focal point, focal length and linear magnification as applied to a converging (convex) lens. Define the power. - ppt download
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Define focal length.
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terminology - What exactly is focal length when there is also flange focal distance? - Photography Stack Exchange
Lesson 4 Define the terms principal axis, focal point, focal length and linear magnification as applied to a converging (convex) lens. Define the power. - ppt download
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What is Focal Length in Photography? - Focal Length Explained