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Thread: Close-up Filters/Lenses or Diopters

  1. #1
    Member tehcbing's Avatar
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    Default Close-up Filters/Lenses or Diopters

    Hi all, needed help on these. What are the no.1,2,3 or 4 meant for close-up lenses?? Thinking of getting one but dunno what should i look for.
    So needed some enlightenment from fellow CSers.
    Shoot first, think later

  2. #2
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    Default Re: Close-up Filters/Lenses or Diopters

    But a proper 1:1 macro lens is a better choice than those close-up glass.
    Enjoy your every moment with our nature and friends

  3. #3
    Senior Member sinned79's Avatar
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    Default Re: Close-up Filters/Lenses or Diopters

    http://photography.timtrott.co.uk/cl...vs-macro-lens/

    just get a dedicated macro lens instead.

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    Default Re: Close-up Filters/Lenses or Diopters

    Quote Originally Posted by sinned79 View Post
    http://photography.timtrott.co.uk/cl...vs-macro-lens/

    just get a dedicated macro lens instead.
    After using Raynox 250, I have to agree with going with a dedicated macro lens....
    Too many great equipments but too little quality photos. [My Flickr] | [My Blog]

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    Member tehcbing's Avatar
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    Default Re: Close-up Filters/Lenses or Diopters

    This is great help.. Thanx Stanycjw, Sinned and SkyStrike!! Appreciate it
    Shoot first, think later

  6. #6
    Senior Member luckyorange's Avatar
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    Default Re: Close-up Filters/Lenses or Diopters

    hmm get a used tamron90mm =)
    Lousy de My Flickr

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    Member tehcbing's Avatar
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    Default Re: Close-up Filters/Lenses or Diopters

    Quote Originally Posted by luckyorange View Post
    hmm get a used tamron90mm =)
    I had the Tammy 90mm.. But was kinda curious what result would those close-ups lenses produce..
    Shoot first, think later

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    Default Re: Close-up Filters/Lenses or Diopters

    Quote Originally Posted by tehcbing View Post
    I had the Tammy 90mm.. But was kinda curious what result would those close-ups lenses produce..
    (IIRC) If you use the close up filters on a real macro lens, you will get a bigger magnification (2:1 or possibly more). But most of the time, people are quite satisfied with what 1:1 gives them.

    *btw, I've yet to really dump $ into a macro lens yet....all these are just based on readings*
    Too many great equipments but too little quality photos. [My Flickr] | [My Blog]

  9. #9
    Member tehcbing's Avatar
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    Default Re: Close-up Filters/Lenses or Diopters

    Quote Originally Posted by SkyStrike View Post
    (IIRC) If you use the close up filters on a real macro lens, you will get a bigger magnification (2:1 or possibly more). But most of the time, people are quite satisfied with what 1:1 gives them.

    *btw, I've yet to really dump $ into a macro lens yet....all these are just based on readings*
    No worries SkyStrike.. The more we talk and discuss, the more we gain..
    The Tammy 90mm is a good and sharp lens. The only blip is that its AF a bit slow and the motor quite noisy.
    Shoot first, think later

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    Default Re: Close-up Filters/Lenses or Diopters

    Quote Originally Posted by tehcbing View Post
    No worries SkyStrike.. The more we talk and discuss, the more we gain..
    The Tammy 90mm is a good and sharp lens. The only blip is that its AF a bit slow and the motor quite noisy.
    I scared the temptation to get a macro lens is just BBB..Thou I have a tendency to shoot flora. For now, Raynox 250 on my 18-55 matches quite well for flora close up (still can AF quite well). but Raynox 250 on 55-250 is much much tougher with that kind of magnification (also have to MF all the time, AF can't get a lock on).
    Too many great equipments but too little quality photos. [My Flickr] | [My Blog]

  11. #11

    Default Re: Close-up Filters/Lenses or Diopters

    Here is a thread I did some time ago on this :
    http://www.clubsnap.com/forums/threa...nd-performance

    personally, I like extension tubes more than close up filters

  12. #12
    Member tehcbing's Avatar
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    Default Re: Close-up Filters/Lenses or Diopters

    Quote Originally Posted by pinholecam View Post
    Here is a thread I did some time ago on this :
    http://www.clubsnap.com/forums/threa...nd-performance

    personally, I like extension tubes more than close up filters
    Thanx for the details Pinholecam. Dats great work..
    Shoot first, think later

  13. #13
    Moderator ziploc's Avatar
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    Default Re: Close-up Filters/Lenses or Diopters

    Quote Originally Posted by tehcbing View Post
    Hi all, needed help on these. What are the no.1,2,3 or 4 meant for close-up lenses?? Thinking of getting one but dunno what should i look for.
    So needed some enlightenment from fellow CSers.
    Those numbers are the diopter strength of the closeup filters/lens, and affects both the magnification and working distance.

    Working distance = 1000mm / diopter strength, (measured from the "optical center" of your lens)

    So a weaker closeup filter (those with lower diopter number, e.g. +2 or +3) will give you more working distance.

    E.g. with the Raynox 250 (+8 diopter), the working distance = 1000 / 8 = 125mm, whereas with the Raynox 150 (4.8 diopter) the working distance becomes longer at 1000 / 4.8 = 208.3mm.

    The focal length of your lens and the diopter strength of the close-up lens affects the magnification you get. To calculate magnification from diopter strength,

    Magnification = (diopter strength x lens focal length) / 1000

    So, for example you put the Raynox 250 on the 50mm lens,

    Magnification = (8 x 50) / 1000 = 0.4x, or 1:2.5 life-size ratio (smaller then life size).

    If you now use the Raynox 250 on the 200mm lens,

    Magnification = (8 x 200) / 1000 = 1.6x, or 1:0.625 life-size ratio (larger then life size).

  14. #14
    Moderator ziploc's Avatar
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    Default Re: Close-up Filters/Lenses or Diopters

    Quote Originally Posted by pinholecam View Post
    Here is a thread I did some time ago on this :
    http://www.clubsnap.com/forums/threa...nd-performance

    personally, I like extension tubes more than close up filters
    Hoya closeup filters are cmi. There are better ones e.g. the Canon 250D/500D.

    Btw, can I seek your permission to store your above article in the article section? I will leave a permanent link in the Pentax subforum.

  15. #15

    Default Re: Close-up Filters/Lenses or Diopters

    Quote Originally Posted by ziploc View Post
    Hoya closeup filters are cmi. There are better ones e.g. the Canon 250D/500D.

    Btw, can I seek your permission to store your above article in the article section? I will leave a permanent link in the Pentax subforum.
    Sure thing. I'd be glad if its helpful to those looking at the same question again. Thanks


    Yeah, the Hoya close-up filter CMI, Raynox is much better. Heard good things about the Canon ones as well.

  16. #16
    Moderator ziploc's Avatar
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    Default Re: Close-up Filters/Lenses or Diopters

    Thanks, it's done.

  17. #17
    Member tehcbing's Avatar
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    Default Re: Close-up Filters/Lenses or Diopters

    Quote Originally Posted by ziploc View Post
    Those numbers are the diopter strength of the closeup filters/lens, and affects both the magnification and working distance.

    Working distance = 1000mm / diopter strength, (measured from the "optical center" of your lens)

    So a weaker closeup filter (those with lower diopter number, e.g. +2 or +3) will give you more working distance.

    E.g. with the Raynox 250 (+8 diopter), the working distance = 1000 / 8 = 125mm, whereas with the Raynox 150 (4.8 diopter) the working distance becomes longer at 1000 / 4.8 = 208.3mm.

    The focal length of your lens and the diopter strength of the close-up lens affects the magnification you get. To calculate magnification from diopter strength,

    Magnification = (diopter strength x lens focal length) / 1000

    So, for example you put the Raynox 250 on the 50mm lens,

    Magnification = (8 x 50) / 1000 = 0.4x, or 1:2.5 life-size ratio (smaller then life size).

    If you now use the Raynox 250 on the 200mm lens,

    Magnification = (8 x 200) / 1000 = 1.6x, or 1:0.625 life-size ratio (larger then life size).
    Thanx for all the definitions and calculations (though it kinda gives me headache as i hated maths. haha.. jus kidding)
    Nonetheless, Im more enlightened and know what to get for myself..
    Thanx Ziploc!!!
    Shoot first, think later

  18. #18

    Default Re: Close-up Filters/Lenses or Diopters

    In SG where got sell canon 250D/500D?
    Love the life you live, live the life you love - DreamszPhoto

  19. #19
    Senior Member sinned79's Avatar
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    Default Re: Close-up Filters/Lenses or Diopters

    Quote Originally Posted by dreamsz View Post
    In SG where got sell canon 250D/500D?
    check with Canon?

  20. #20

    Default Re: Close-up Filters/Lenses or Diopters

    Quote Originally Posted by sinned79 View Post
    check with Canon?
    Ok lar sinned79.... :P
    Love the life you live, live the life you love - DreamszPhoto

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