A fisheye lens gives a 180° field of view.
A telephoto lens gives an 800mm field of view.
Before buying a lens, find out what you want to be shooting and what your budget is.
Wide angle lenses should be used when prominent foreground objects are present.
When using wide angle lenses, get close, have interest in the foreground, but do not try and include too much in the scene.
Having a wide angled lens also comes in handy when shooting tight areas like small rooms, cars, caves, etc. Because they can give volume to the small area.
Standard lenses tend to range from about 35mm up to around 85mm.
Standard lenses are great general or basic lenses.
A standard lens can be used for wide angles and for zoom-ins.
When taking telephoto photos, you have to zoom in a lot and get close if you really want a good photo.
Telephoto zooms come in handy when taking portraits.
When using a telephoto zoom, don’t get lazy and let your lens do all the work, physically get closer to the object that you’re photographing as much as possible, and shoot away.
A “fast” lens is usually one that has an aperture of f/4, f/2.8 or larger.
If sports is one of your primary subjects, a telephoto zoom such as a 70-200 f/2.8 is an excellent choice.
If you want to look like the pros you’ll want a 300mm f/4, or 300mm f/2.8 or 400mm f/2.8.
Don’t forget to make your shutter speed fast enough!
1/500 to 1/1000 shutter speed is the minimum.
If you’re using a longer lens to try and capture movement, try and shoot in a direction in which the object is coming at you instead of shooting parallel movement.
If you want to shoot smaller objects, try using a macro lens.
If you want to shoot architecture, tilt-shift or perspective correction lens should be your choice.