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Thread: 50mm prime lens?

  1. #1

    Default 50mm prime lens?

    hi,

    i got 18mm-55mm kit lens and 55mm-200mm lens....should i get myself a prime len?

    i read the threads that prime lens usually will give you a sharper picture, right?

    so is it usually for indoor pictures?

    please advise

    chee kiang
    Canon IXUS 850 / Canon EOS 400D 18mm-55mm Kit Lens

  2. #2
    Senior Member Kit's Avatar
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    Default Re: 50mm prime lens?

    Sharpness is just one of the many criteria for choosing a lens. I don't advise anybody getting a lens just because other people said its sharp. Like all lenses, a 50mm can be used both indoors and outdoor. There's no rule stating where you can use it.

  3. #3

    Default Re: 50mm prime lens?

    do you need the 50mm range in the first place?

    or you just getting it cause its sharp?

  4. #4

    Default Re: 50mm prime lens?

    hi,

    i am going to shoot pictures indoor...and although my kit lens could serve me well...but then i wonder if a prime lens could offer me with a better sharpness and quality....like with a low ISO setting and internal flash light will the prime lens give me a better picture than the kit len?

    chee kiang
    Canon IXUS 850 / Canon EOS 400D 18mm-55mm Kit Lens

  5. #5

    Default Re: 50mm prime lens?

    50 f/1.8 allows you to shoot at lower light without increasing your ISO much.

    i find that it's a good investment to get a 50mm lens..since they are affordable and has good performance. Another thing i've learnt is to control the DOF.. generally all prime lenses has wider aperture compared to zoom lenses :P
    Last edited by duckalas; 11th March 2007 at 07:58 PM.

  6. #6

    Default Re: 50mm prime lens?

    does wider aperture means giving you a shallower picture??
    Canon IXUS 850 / Canon EOS 400D 18mm-55mm Kit Lens

  7. #7

    Default Re: 50mm prime lens?

    Quote Originally Posted by cheekiang View Post
    does wider aperture means giving you a shallower picture??
    from my understanding(still new to photography la )
    there are three factors that affect DOF... one of it is the size of aperture...you can try it... you compare shooting at a subject at the same distance but at diff apertures...u'll find that shooting at say f/4 gives you shallower dof compared to f/8.

    here's a more detailed explanation
    http://en.wikipedia.org/wiki/Depth_of_field
    Last edited by duckalas; 11th March 2007 at 08:22 PM.

  8. #8
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    Default Re: 50mm prime lens?

    Actually 4 factors affect dof...

    1. Aperture
    2. Distance from the object
    3. Focal length of the lens used
    and 4. The zoom size of the picture...

  9. #9

    Default Re: 50mm prime lens?

    Quote Originally Posted by cheekiang View Post
    hi,

    i got 18mm-55mm kit lens and 55mm-200mm lens....should i get myself a prime len?

    i read the threads that prime lens usually will give you a sharper picture, right?

    so is it usually for indoor pictures?

    please advise

    chee kiang
    hi. i would recommend u to get a 50mm prime. it produce pictures with nice bokeh, works well under low light, fast and very affordable. gd for portrait shot. i didnt regret buying it.

  10. #10
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    Default Re: 50mm prime lens?

    Quote Originally Posted by cantaresg View Post
    Actually 4 factors affect dof...

    1. Aperture
    2. Distance from the object
    3. Focal length of the lens used
    and 4. The zoom size of the picture...
    lol whats the different between
    this
    4. The zoom size of the picture
    and
    3. Focal length of the lens used

    or
    2. Distance from the object
    and
    4. The zoom size of the picture.
    ?

    anyway the 4 sld be
    1. Aperture
    2. Distance from the lens to object
    3. Focal length of the lens used
    4. Distance from the object to background..

  11. #11
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    Default Re: 50mm prime lens?

    In the sense, when you view a picture on the computer, when you fit the picture to the page, most of the picture may look clear, but when you view the actual size, you find that there is actually less depth of view. Of course this has a similar effect to using different focal lengths of a lens...

    In any case, factor 2 and 4 that you mentioned are related too...

  12. #12
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    Default Re: 50mm prime lens?

    Quote Originally Posted by cantaresg View Post
    In the sense, when you view a picture on the computer, when you fit the picture to the page, most of the picture may look clear, but when you view the actual size, you find that there is actually less depth of view. Of course this has a similar effect to using different focal lengths of a lens...

    In any case, factor 2 and 4 that you mentioned are related too...
    nope, 1 is the distance between u and the subject, while the other is the distance between subject and the background.
    Last edited by ExplorerZ; 11th March 2007 at 11:29 PM.

  13. #13

    Default Re: 50mm prime lens?

    Set your kit lens to ~ 50mm, tape up the zoom ring, and shoot with it for a day or two.

    Yes, wider aperture lenses allow more room for creativity, but this comes to naught if you dislike the field-of-view of a 50mm (or 65 or 80mm, depending on the camera).

    While you're at it, might as well tape up your kit lens @ 35mm. If you like the 35mm FOV you can always grab the 35mm f/2.

  14. #14

    Default Re: 50mm prime lens?

    Get the 50 1.8. It's cheap and good. Best value for money lens.
    Also, I feel that the prime trains me in my composition of photos, which did me a lot of good.

  15. #15

    Default Re: 50mm prime lens?

    hi,

    is that any difference taping up my kit lens at 50mm and prime lens 50mm??
    Canon IXUS 850 / Canon EOS 400D 18mm-55mm Kit Lens

  16. #16

    Default Re: 50mm prime lens?

    Quote Originally Posted by cheekiang View Post
    hi,

    is that any difference taping up my kit lens at 50mm and prime lens 50mm??
    Apeture f-stop & sharpness

  17. #17

    Default Re: 50mm prime lens?

    hi hi.

    so i assume the prime lens will be a much better as it offers better aperture and sharpness??

    anyway if the lens got this aperture size...is it the smaller f values the better or the larget the aperture the better??

    please advise
    Canon IXUS 850 / Canon EOS 400D 18mm-55mm Kit Lens

  18. #18

    Default Re: 50mm prime lens?

    Quote Originally Posted by cheekiang View Post
    hi hi.

    so i assume the prime lens will be a much better as it offers better aperture and sharpness??

    anyway if the lens got this aperture size...is it the smaller f values the better or the larget the aperture the better??

    please advise
    Better in what sense? It's the photographer to determine. Large apeture (i.e. small f-numbers), holding everything else constant would give a narrower DOF. Can increase the amount of light reaching your censor, thus able to increase shutter speed etc.....

  19. #19
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    Default Re: 50mm prime lens?

    you gotta ask yourself what you want to use it for...
    issit reli nessary...?
    for me i would
    because i usually shoot in quite bad lighting conditions without the need for flash
    Mountain Training #101: Crouching Photographer Hidden Ladder

  20. #20

    Default Re: 50mm prime lens?

    hi hi,

    not sure better in what sense....just that i read somewhere got pple recommend a lens with a particular f-number but someone else recommend a smaller one....so i thought is it the smaller f-number is better....
    Canon IXUS 850 / Canon EOS 400D 18mm-55mm Kit Lens

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