The main thing to know is that you need a lens that caters to your style of photography. So, one lens is not better than the other. What you need to ask is, does it fit my style of photography. You may already know what kind of style you use to take pictures, if you don’t, here’s a quick and dirty guide to digital camera lenses.
Folding optical lenses: Lenses that fold back into the digital camera's structure.
Fixed Focal Lenses: Usually employ a digital zoom feature. Great for taking wide angle shots and pictures of landscapes.
Zoom Lenses (80-220mm, 35-120mm)
Zoom lenses combine the basic forms of several lenses in a single lens. For a lens to accomplish this, it calls for a complex optical system comprising many elements. Zoom lenses are generally acquired to replace a large range of lenses and are particularly useful for travel.
Retractable Zoom lenses: They retract into the cameras body for easy storage, but have limited settings.
Fixed Zoom Lenses: Don't fold back, but has up to 18 times magnification. Great for a serious amateur photographer.
Interchangeable lenses: Used by serious amateur photographers and professionals. These lenses release from the camera body so they can be switched for different lenses to get a desired effect.
The following lens definitions and major options to consider when researching a new Canon Eos Rebel lens. These are the most common lenses you will find for amateur and professional photography use.
Telephoto Lenses (200m, 500mm, 1000mm)
Telephoto lenses turn out larger images of distant subjects than normal lenses. These lenses are longer than a normal lens, being long and bulky, they are unbalanced and awkward to use without a tripod. The telephoto lens is not suggested for subjects closer than 5 to 10 meters.
Wide Angle Lenses (18mm, 20mm, 28mm, 35mm)
A wide angle lenses produces smaller images and wider views. Wide angle lenses have perspective distortions when too close to the subject. The 28mm is generally what most people choose, when close camera to subject distance and maximum depth-of-field is required.
Fish Eye Lenses (6mm 220o, 14mm 180o)
The fish eye lens provides extreme angle of view. They have great depth-of-field is and definition.
Macro Lenses
Macro lenses are used for close up photography, where the image is larger than the subject.
Soft Focus Lenses (120mm portrait lens)
A soft focus lens represents a point of light as a circular patch of light with a luminous halo or softness of outline.
Canon Eos Rebel lenses come with varying specifications available and it can be quite overwhelming to find exactly what it is that you require from a lens. Different types of camera lenses are suited for different activities. Do you need a telephoto lens to capture photos from a long distance? How about a macro lens for close-up photography? Familiarize yourself with popular camera lenses so you can determine which are best for your photography applications. Keep in mind that the performance of lenses can differ from camera to camera, with the magnification power behind a lens generally being greater on a digital camera than on a 35mm film based camera.
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