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#1 |
Junior Member
Join Date: Aug 2006
Posts: 22
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Hi
I am a newbi in DSRL field but I want to learn. As I have read everyone suggest to use a prime lens in the beggining in order to get used with the camera. My question is can a a zoom lens be used as a prime lens? Sorry for the stupid question. regards |
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#2 |
Senior Member
Join Date: Dec 2004
Location: Taylor Mill, Kentucky
Posts: 2,398
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A zoom lens is a lens that covers a range of focal lengths. For example an 18mm-70mm zoom lens covers all the focal ranges between 18mm and 70mm. Typically you select the focal rangeby rotating the barrel of the lens, though some are push/pull. A prime lens only covers one focal length, ie 50mm. Zoom lenses are more convenient as they are very flexible, however this comes at the expense of maximum aperature and image quality. Primes are known for great image quality and large maximum aperatures, typically f2.8 or even f1.8 or f 1.4. This makes them very useful in low light situations. On the downside, you are limited in flexibility as the only way to zoom in or out is by physically moving closer or farther away.
Primes are nice to have, but I think your better off with a zoom. They are the most flexible, and will limit the number of lens changes you'll need to make. |
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#3 |
Super Moderator
Join Date: Nov 2004
Posts: 3,599
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You probably thought "prime" meant "main" or "primary".
So yes a zoom lens can be used as a main or primary lens. But as rjseeny says, "zoom" and "prime" are different and mutually exclusive things, prime lenses cannot zoom (i.e. change focal length). Can an apple be used as an orange? :? |
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#4 |
Junior Member
Join Date: Aug 2006
Posts: 22
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thnx guys. well I should have made my question clear but being a newbie in this field I can't express as I should.
Is it possible to fix a zoom lense at 50 mm so I can use it as a prime and in other situation as a zoom camera? I don't have much money to invest in this hobby and that is why I am doing this stupid question... thnx |
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#5 |
Senior Member
Join Date: May 2005
Posts: 221
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When you want your zoom lens to be a 50mm lens you zoom it to 50mm. Some lenses have a zoom lock, but this is so they don't telescope out when not in use so they don't get damaged. What you're asking sounds utterly pointless. Just take all your photos at 50mm if that's the focal length you want.
Some people recommend a prime to learn with because the lack of zoom makes you think a bit more about what you are getting in the frame. If you want to replicate that with a zoom then just don't zoom the lens. You could tape the zoom ring if you really wanted, but that's just silly. Primes are generally a lot faster than zooms which gives you some possibilities that the zoom won't have. Nothing you ca ndo about that. |
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#6 | |
Senior Member
Join Date: Mar 2006
Posts: 1,234
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discovery wrote:
Quote:
On my first cameras that I owned I always used prime lenses because they were so much better. That was a long time ago and nowadays a good selection of choice zooms is available, but primes are generally better. Zooms are just more convenient. |
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#7 |
Junior Member
Join Date: Aug 2006
Posts: 22
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thnx guys. I learned a lot.I appreasciated it.
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