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Thread: Tele and wide Lenses

  1. #1

    Default Tele and wide Lenses

    I just got my tele (2x) and wide lenses (x0.45)

    But there's a blur at the sides of the photos whenever I use them, it's fine without the lenses.

    I was wondering, is this a sign of a poor quality lens? Or do they all blur at the sides to an extent?

    Edit: Okay, reading a bit, I found out that this is called vigetting (which I didn't know ).

    I found that this is normal but good lenses don't have/limits this effect. And I have also heard that high contrast lens would limit this?

    My second question is therefore is there any way of limiting this fairly cheaply? do any filters out there help? Or is the only way to get some expensive lenses?
    Last edited by Freddy C; 14th March 2005 at 11:22 PM.

  2. #2

    Default

    Unfortunately, poor quality lens.
    Check out this thread:
    http://forums.clubsnap.org/showthread.php?t=119791

    Btw, vignetting is the darkening of the edges of the picture.
    check the bottom of this page: http://www.dpreview.com/reviews/nikond70/page19.asp
    (I don't mean to be against Nikon, but that was one review I remembered..)

    The blur is most likely the result of poor quality lens.

  3. #3

    Default

    Thank you for the feedback, I guess there isn't really anyway to "fix" it with equipment, I'm an amateur anyway, I guess if anything, it makes me less worried about dropping them etc.

    Plus, I'm trying to capitalise on this blur...if that's possible lol.

  4. #4
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    Default

    capitalise on the blurness? don't think so...

    i used to have this 0.45x OEM convertor lens to use with my oldie prosumer digicam and the corner blurness drove me nuts.

    sold it away for a loss of course.... and got myself a quality olympus wcon-08... so much better in terms of sharpness and image quality... no loss in f-stop some more. much happier with how the images turn out.

  5. #5

    Default

    Quote Originally Posted by Freddy C
    I just got my tele (2x) and wide lenses (x0.45)

    But there's a blur at the sides of the photos whenever I use them, it's fine without the lenses.

    I was wondering, is this a sign of a poor quality lens? Or do they all blur at the sides to an extent?
    I find it difficult to believe that "cheap" lenses vignet. I my be wrong. But there are other possible reasons.

    Do you use a lens hood? Sometimes an improperly placed lens hood can cause vignetting.

  6. #6

    Default

    thanks for the advice tao, but I still think that in some way I can overcome the annoyance of the blurness when shotting some subject, or delibrately add a blur round the edges etc.

    Btw, does the olympus wcon-08 not blur at all round the edges? I read quite a lot and so far, just about every lens blurs a bit. Maybe the blur goes when the zoom is not too low. olympus wcon-08 is a x0.8 if I'm not wrong. But do you know of any lens that are x0.5 or less that doesn't blur a lot?

    student, I wasn't using a hood.

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