GUIDE TO GREAT PHOTOGRAPHY – ESSENTIAL REFERENCE MANUAL FOR FILM AND DIGITAL CAMERA OWNERS
This book is much more than just a showcase of great images. Inside you will find a wealth of useful tips to help you take better photographs, along with step-by-step guides to advanced photographic techniques. Whether you are still a film user, or have fully embraced the world of digital, this book has something to offer, regardless of your level of experience.
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What is it?
The aperture is an opening in the lens, made by a group of thin metal blades, which controls the amount of light that enters your camera to form an image. The aperture has two main effects on exposure – it alters the amount of your image that appears in focus, and it also affects how long you will need to open the shutter for the correct exposure.
What’s an ‘f’ stop?
The word ‘stop’ comes from the very first cameras. Instead of a diaphragm of blades as used in modern lenses, early photographers had to insert a piece of metal into the lens with a hole drilled through it. This piece of metal was called a stop because it stopped some of the light getting through the lens. Numbers marked on a lens are sometimes referred to as relative brightness and are expressed as a ratio to one. e.g. 1:2.8 would be f/2.8. The closer to zero the number is, the brighter the aperture.
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