Depth of field and your digital camera. What is depth of field? A photographic lens renders a sharp image of points at one given distance, measured along the lens axis. This distance can be adjusted (the process of focusing). Any points at a different distance will be rendered more or less unsharp, and this unsharpness increases gradually as we move away from the "sharp" focus plane. Within some limits it will be small enough to consider the image of our point "sharp enough" for a given purpose. We are talking here only about the unsharpness due to the subject being out of the focused distance.
Other sources of unsharpness are possible: camera shake, dirty lens, atmospheric conditions, and various optical flaws of the lens among others. These reasons remain outside of the scope of this article. The term depth of field (DOF) is often used to refer to the fact that points not exactly in focus are rendered acceptably sharp in the image. Is it good or bad for your pictures? What is "acceptably sharp" — circle of confusion Basic facts.
Processing. Printer. Photo-Studio. Photography-forum. Buyprints. Photo. Malc S' photosets on Flickr. How to photo blog. ComputerVideo.net. AREAS COVERED: Introduction: Welcome to the revolution Why do you want to edit? Hardware considerations Which platform? Processor Memory Storage Graphics cards Capture/Playback cards Soundcards Buying a computer? Software considerations Editing programs Installation Training Frequently Asked Questions Tips Glossary Only five years ago, the notion that affordable home computers could be used to store, edit and manipulate video clips seemed like a pipe dream. The odd enthusiast might use an Amiga to add a title or basic digital video effect, but sound and video editing required dedicated hardware.
You could (and still can if you're a masochist) get away with copying selected shots from your camcorder tape to a tape in your VCR. The gulf between amateur and broadcast video was vast - even five years ago. People had been talking about using hard disks rather than tape to store video for a decade or more, but the cost of doing this was prohibitive except at the very top-end. Dark room equipment. Photograms - Art and Design.