Difference between 18-50mm lens & 28-80mm lens??

Question

New to photography guys and havent the slightest on the differences between lower to higher mm lenses

Answer 1

For digital, the 18-55 is the standard and most useful kit lens. If you have a digital camera and you are getting "one lens," this is the one to get.

For film, the 28-80 is the standard and most useful kit lens. This is the "one lens" that Zee~VT recommends and if you have a film camera, I agree 100%.

Do the math and you will see that they are pretty much the same lens as far as effective focal lengths.

Nikon - 1.5X lens factor
18 x 1.5 = 27 mm
55 x 1.5 = 82.5 mm

Canon - 1.6X lens factor
18 x 1.6 = 28.8 mm
55 x 1.6 = 88 mm

Buy the lens that matches the format of your camera for a starter lens. So, for digital, get the 18-55 or for film, get the 28-80.

See these images for a rough idea of what the range will give you. It gets a little confusing for a newbie, because I have shown the real focal length and then the effective focal length. This is because of the magnification or crop factor that exists in digital SLR's.

If I had sample for exactly 18 and 55 mm, they would be labeled:

18 mm (27 mm equivalent)
55 mm (82.5 mm equivalent)

http://www.flickr.com/photos/samfeinstein/tags/focallength/

Answer 2

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Your 18-55mm lens is a zoom lens, all it means is that the lens has a variable focal length between X and Y. A telephoto lens is one that is greater focal length than the "normal" lens for a particular type of camera. On a 35mm, that is anything more than 50mm. On a 645 or 6X6, that is anything greater than an 80mm. On your Digital Rebel with the 1.6x crop factor, it is anything greater than about 35mm. Your 18-55 is actually a short telephoto, with an equivalent field of view of approximately 29-88mm as compared to a 35mm camera. What you can get to fulfill your need varies mostly with your budget. The Canon 75-300 III is the least expensive method to get a lot more reach, but is also the worst option. Better, yet still fairly low cost, is the Sigma 70-300 APO. Make sure it is the APO version, there are several. Upping the budget a little, there is the Canon 55-250 IS, supposed to be a pretty good lens. For another step up in price, there is the Canon 70-300 IS, which is an image stabilized version of the lens, but is a much better lens to begin with. For only a little more, you can get the Canon 70-200 f/4 L, a constant aperture zoom. Anything with an L in the name is a good lens. Even the 28-300 IS, even though it costs $2,300.

Answer 3

A telephoto lens is a lens that makes the subject appear nearer than normal, telescope effect. With most crop-size sensors, normal is around 33mm so anything above that is telephoto. On an 18-55mm zoom lens, 55mm is telephoto. To achieve more magnification, you get a lens with a longer focal length or more mm. You can get a 200mm, 300mm, 500mm or 1000mm, whatever you can afford. You will notice that my suggestions above only have one number each. These are prime lenses, those that do not zoom. They are generally more expensive than zoom lenses. Zoom lenses are lenses that can vary focal length like your 18-55mm zoom lens. This means that you can shoot wide at 18mm but if you want to go closer, zoom to 55mm. A zoom lens may have telephoto capabilities so it is possible to have zoom and telephoto at the same time within the same lens. The 18-55mm lens is an all-purpose lens that goes from wide to telephoto. A 75-200mm lens is a telephoto zoom lens that goes from tele to super telephoto. In the unlikely event that you find Canon lenses too prohibitive to acquire, rather than get a poor alternative, you can always use the original zoom method invented years before the first zoom lens was made. It's called walking. Simply approach your subject until you get the effect you want to achieve.

Answer 4

The difference is significant:

If I could have only one lens, it would be 28-80:
♦ The 28-35 range is great for scenics and other wide-angle shots, with little-to-no distortion and good depth-of-field (both near and far objects in focus).
♦ 80mm is a great portrait lens. Good for head and shoulders shots without getting in someone's face.

If I could own only two lenses, not counting macro (close-up), I would have something around 28-80 and one approximately 80-200.

(18-50 is more of a specialty lens. 18mm will take very wide-angle shots, with extreme depth of field, but you will get fish-eye distortion. I would avoid it unless I needed it's specialized features.)

edit:
OH! Thanks, Dr. Sam. Digital is territory I am just beginning to explore (with great delight!). I obviously have a lot to learn. The basic principles are still basic, but are expressed differently in digital. -z

Answer 5

The 18-50mm is a pretty standard lens that you'll find when the body is sold as a "kit" The 18mm will shoot at a greater angle(catch more to the right and left) Also the 50mm lens is called a normal lens.

Answer 6

80mm Lens

Answer 7

They are fairly equivalent if the 18-55 is used on APS sized dSLR and the 28-80 is used on film dSLR.

Keep in mind that the 18-55mm may have been designed to work only on a dSLR.

Answer 8

Bigger numbers see farther away. smaller numbers see wider. Having 2 numbers on the lens means it can slide, or "zoom" from 1 length to the other. The numbers you have are like an all purpose zoom lens. The average consumer Telephoto lens goes maybe from 50 - 200 mm. Of course they make them longer, but they cost considerably more.

Answer 9

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Answer 10

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