Add-On Lens - Some lenses have filter threads on the front edge that allow you to mount an auxiliary wide angle or telephoto lens in addition to the standard lens.
Add-on Lens - Some point and shoot digicams have a filter thread on the front of the fixed lens that will enable the attachment of an additional lens. Usually wide-angle or telephoto.
Add-on Lenses
Add-on or accessory lenses are targeted towards compact digital cameras, ...
Since the Coolpix 950 Nikon has provided an expanding range of quality add-on lenses for their higher range of Coopix digital cameras.
All housings will take add-on lenses. I tried this camera out topside recently, it was easy to use, photos looked great and I loved the large LCD. Has great potential. Housings are out from Canon, Ikelite, and Recsea.
Better digicams can accept wide-angle or telephoto add-on lenses via filter thread or adaptors. Very useful for the serious photographer.
AVI
A movie in Windows AVI format. Many digicams have the ability to capture movies, albeit with limited quality.
If so, you have the right tools in the 16mm and 20mm add-on lenses. Don't discount the macro and fish encounters in the Galapagos, though.
They'll handle add-on lenses easily and have tons of features to adjust every detail (mostly around shutter control). These are larger than standard size cameras and are usually overkill for the casual user.
similar to those for beginner photographers, except that they provide better image quality, more parameters you can have control over, faster and more precise auto focus, faster continuous shooting, better performance, availability of add-on lenses ...
With SLR cameras, it is important that the image in the viewfinder be the same image recorded by the film or sensor, so that the effect of the add-on lenses and filters can be seen by the photographer.
Note that you aren't out of luck if your camera lacks such correction facilities and you want it. Canon sell small add-on lenses which clip directly onto the viewfinder of most EOS models.
If you're going to avoid cheapo shortcuts like I have (add-on lenses/extension tubes for macro and w/a), the photo equipment cost alone is close to $2000 itself. Want a housed SLR- considered worse for wide angle but far superior for macro?
If you need a compact camera that can deliver DSLR quality and/or performance, check out The best system compact digital cameras right now! These cameras offer advanced controls as well as add-on lens and flash attachments.
Some lower cost digital cameras can be fitted with add-on lenses that increase their angle of view. In 35mm cameras, a 50mm lens is said to give an angle of view similar to the human eye, though many people dispute this.
 See also: Camera, Lens, Photograph, Zoom, Lenses
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