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Thread: What does it mean by 0.45x for lens on G11?

  1. #1

    Default What does it mean by 0.45x for lens on G11?

    Hi everyone,
    I am looking at add on lens for G11. What it means by the following specification for the lens?

    1. 0.45X Wide-Angle Lens (Built in macro lens)

    2. 2.0X Tele-Photo Lens

    The focal length of a G11 is 28-140mm (35mm equiv). So if i get the 0.45x wide angle lens, I can get the focal length to be 28x 0.45mm= 12.6mm (35mm equiv)?

    Thanks in advance!

  2. #2
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    Default Re: What does it mean by 0.45x for lens on G11?

    HI There,

    Yup, you got it right. The 0.45x multiplier ill give you a wide angle. However, you need to check if the conversion result in a fish-eyed effect. It may or may not end up to be something you might picture it to be. best to try it out.

  3. #3

    Default Re: What does it mean by 0.45x for lens on G11?

    Be aware that those are usually the "Vitacon" add-on lenses designed for video. Many shops will try to sell them to you for waaaay too much money, and they usually severely degrade image quality.
    Alpha

  4. #4

    Default Re: What does it mean by 0.45x for lens on G11?

    I was just looking at the offers from eBay. Where can I get those kind of wide angle conversion lens and the lens adapter in Singapore?

  5. #5

    Default Re: What does it mean by 0.45x for lens on G11?

    Quote Originally Posted by krisietong View Post
    Hi everyone,
    I am looking at add on lens for G11. What it means by the following specification for the lens?

    1. 0.45X Wide-Angle Lens (Built in macro lens)

    2. 2.0X Tele-Photo Lens

    The focal length of a G11 is 28-140mm (35mm equiv). So if i get the 0.45x wide angle lens, I can get the focal length to be 28x 0.45mm= 12.6mm (35mm equiv)?

    Thanks in advance!
    0.45x is just a value printed on the wide angle conversion lens. It doesn't gurrentee you a 12.6mm focal length.
    Anyway, those things are lousy 0.45x with macro are freaking lousy and a waste of money, unless u are willing to spend a good amount of money to get something like this:
    Raynox HD-7000PRO High Definition Wideangle Conversion Lens 0.7x
    http://www.raynox.co.jp/english/digital/g7/index.htm

    Else, save the money and a few steps backwards.

    As for telecoverter, do take note on which focal length will the vignetting disappears.

  6. #6

    Default Re: What does it mean by 0.45x for lens on G11?

    What are the lens I can look at for wide angle for G11 with the adapter?

  7. #7

    Default Re: What does it mean by 0.45x for lens on G11?

    Quote Originally Posted by krisietong View Post
    What are the lens I can look at for wide angle for G11 with the adapter?
    it is my suggestion that you look at better brands.

    maybe a raynox....? not sure about those though.

    personally, i would steer clear of that sort of thing. if want wider, get a cheap dslr and a 10-20.

  8. #8

    Default Re: What does it mean by 0.45x for lens on G11?

    Quote Originally Posted by krisietong View Post
    What are the lens I can look at for wide angle for G11 with the adapter?
    Did you even bother to click that link?
    So long mounting thread is the same size, they can be used.

  9. #9

    Default Re: What does it mean by 0.45x for lens on G11?

    Quote Originally Posted by night86mare View Post
    it is my suggestion that you look at better brands.

    maybe a raynox....? not sure about those though.

    personally, i would steer clear of that sort of thing. if want wider, get a cheap dslr and a 10-20.
    So long u bought the right thing, it is ok. I am very happy with the fisheye converter I have for my camera. Extremely good image quality, but made my camera extremely heavy as well.

  10. #10

    Default Re: What does it mean by 0.45x for lens on G11?

    Quote Originally Posted by soons View Post
    So long u bought the right thing, it is ok. I am very happy with the fisheye converter I have for my camera. Extremely good image quality, but made my camera extremely heavy as well.
    ah, i see.

    i would suspect that good converters do not come cheap - take for example the raynox macro one, that costs a load more than most other equivalents, and it is *generally* superior.

  11. #11

    Default Re: What does it mean by 0.45x for lens on G11?

    Quote Originally Posted by night86mare View Post
    ah, i see.

    i would suspect that good converters do not come cheap - take for example the raynox macro one, that costs a load more than most other equivalents, and it is *generally* superior.
    Yeah, my fisheye RRP is $800... so...

    "Lens more expensive than body"

  12. #12

    Default Re: What does it mean by 0.45x for lens on G11?

    Quote Originally Posted by soons View Post
    Did you even bother to click that link?
    So long mounting thread is the same size, they can be used.
    Ic cos i saw it was for G9.

  13. #13

    Default Re: What does it mean by 0.45x for lens on G11?

    Quote Originally Posted by night86mare View Post
    it is my suggestion that you look at better brands.

    maybe a raynox....? not sure about those though.

    personally, i would steer clear of that sort of thing. if want wider, get a cheap dslr and a 10-20.
    Actually I am considering btw a DSLR and prosumer cam. Tts y I am checking the versatity of adding lens to G11.

  14. #14

    Default Re: What does it mean by 0.45x for lens on G11?

    Quote Originally Posted by krisietong View Post
    Actually I am considering btw a DSLR and prosumer cam. Tts y I am checking the versatity of adding lens to G11.
    I am using Powershot S5 IS btw.


    If u r buying a camera for bokeh, I suggest going straight to DSLR. Anyway, DSLR UWA or Fisheye lens gonna cost near $1K also. :/

  15. #15

    Default Re: What does it mean by 0.45x for lens on G11?

    Quote Originally Posted by soons View Post
    I am using Powershot S5 IS btw.


    If u r buying a camera for bokeh, I suggest going straight to DSLR. Anyway, DSLR UWA or Fisheye lens gonna cost near $1K also. :/
    Aiyo.. I would like to take landscape pixs. Let me go look ard den decide.
    Thanks everyone for the advice.
    Btw, wats Bokeh?
    Last edited by krisietong; 1st March 2010 at 02:49 PM.

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