What is Aperture? An Introduction to Aperture in Photography | Iceland Photo Tours
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A convex lens of small aperture forms a sharper image.
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Stops, Pupils, and Apertures
How to: Lens Aperture (F-stop) Explained - YouTube
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Lens aperture
Aperture in Photography. What it is and how to use it?
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What is Aperture in Photography? (Beginners Guide)
