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which lens should i use most often my 17-55 or 28-300 i am taking wedding pictures soon of and outdoor wedding
No, this is a point & shoot camera and there is no lens mount. The lens is fixed on the camera and cannot be removed.
i would rather use a convex lens
Because during movement of lens there is no slide below objective .
There are many more functions, such as ability to shoot in RAW format (not present in most point-and-shoots), manual focus, ability to shoot in different lens, etc. Basically, when you shoot with a DSLR, you get a better quality picture.
SLR stands for a single lens reflex camera. Unlike a point and shoot camera, you can change lenses and are able to view your subject through the lens.
These lenses are darker at the top of the lens and get progressively lighter at the bottom. Lightly tinted versions of gradient lenses are used mainly in fashion glasses.
It means Single Lens Reflex. They typically are more complex cameras than the regular point and shoot cameras. Instead of looking through the viewfinder, you look through the lens and see the actually shot through the lens.
It stands for digital single lens reflex. It is NOT a point and shoot camera. It is one that you have a lens (or lens that you can change). Now a days most have a setting where you can set the aperture and things like that manually, but the also have a automatic setting.
For the Nikon DX Nikkor 18-55 mm (the one that comes with the D3100) the UV filter is installed immediately after installing the lens itself. Being outside the lens, it will protect the lens as well as improve the quality of outdoor photos.
It would depend on the type of lens mount. Generally speaking, it would probably not work too well. The AE uses full-aperture TTL metering, and its mechanism for manipulating the diaphragm of the lens is not likely to work with the "digital" lens, although that is not a sure thing. Try to gently mate the lens and body. If the lens will mount, shoot a roll of film and see how it goes.
A single lens reflex (SLR) is a camera that uses the same set of lenses to both focus the image on the CCD (digital) and enable the photographer to frame the picture. That is to say, when you look through the viewfinder of a DSLR you are looking directly at the object through the main lens. You are not looking at the digitally re-created picture of the object or through some other lens that is off-center of the main lens. A point-and-shoot camera will have some other mechanism for framing the picture.