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Thread: Question abt Filters and Stepping Rings

  1. #1
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    Default Question abt Filters and Stepping Rings

    hi,

    am looking to get some filters soon. IRs, GND, ND etc.

    what i wanna find out is..

    i have several lenses of different threads. 52mm,62mm,77mm and maybe a 82mm soon.

    do i:

    1. Buy a filter according to the size of the largest thread ie. 82mm or 77mm and STEP DOWN

    or

    2. Buy a filter of maybe 52mm or 62mm(cheaper) and STEP UP?


    i was told that its better to get a larger filter and step down instead of the other way round because of vignetting and CA issues?

    also, cheapo filters will cause more refraction as compared to the B+W class of filters is it? is it due to the thickness of the filters, would this be even more apparent when stacking filters?

    if not stacking, would a cheapo tokina/hoya UV filter distort the images much?

    thanks

  2. #2
    Senior Member jnet6's Avatar
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    Quote Originally Posted by wainism
    i have several lenses of different threads. 52mm,62mm,77mm and maybe a 82mm soon.

    1. Buy a filter according to the size of the largest thread ie. 82mm or 77mm and STEP DOWN
    )
    using a bigger filter to "step down" is better, due to if u are using wide angle.
    may have/don't have little vignet.
    So the main thing is wide angle lens, need more space at the side.

    if u compare "good" filters side by side with normal 1...
    eg. B+W and Hoya. try looking then at different angle, see which will give u more reflections.
    Would u like to have a "glass" blocking u??? the coating is so gd that at certain angle, it cuts off the reflection.
    correct me if i am wrong...
    Last edited by jnet6; 21st April 2005 at 11:36 PM.

  3. #3

    Default

    Quote Originally Posted by wainism
    hi,

    am looking to get some filters soon. IRs, GND, ND etc.

    what i wanna find out is..

    i have several lenses of different threads. 52mm,62mm,77mm and maybe a 82mm soon.

    do i:

    1. Buy a filter according to the size of the largest thread ie. 82mm or 77mm and STEP DOWN

    or

    2. Buy a filter of maybe 52mm or 62mm(cheaper) and STEP UP?


    i was told that its better to get a larger filter and step down instead of the other way round because of vignetting and CA issues?

    also, cheapo filters will cause more refraction as compared to the B+W class of filters is it? is it due to the thickness of the filters, would this be even more apparent when stacking filters?

    if not stacking, would a cheapo tokina/hoya UV filter distort the images much?

    thanks
    I agree with jnet6. Buy the largest size filter and STEP-DOWN.

  4. #4

    Default querie i=on filter

    hi just a question ... if now i am outdoor and i am shooting landscape ... and i wnat to get a blue blue sky ... what kind of filters should i buy ...cos i have been trying but dont seems to get it even the sky is blue . thanks for you advise ... will be gretly appreciated ...

  5. #5
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    On a Bright Sunny Day...

    do u use a ND filter or do u use a Cir Polariser?

    what does a GND do?
    is it for...

    a strong back light(eg. sun behind subject,be it person or building) and i wanna correctly expose both? ie. the subject in the foreground is rightly exposed yet the sky is not washed out(over exposed)
    currently i have no NDs yet, so i always meter the person's face, in the end the sky is washed out!

  6. #6
    Senior Member jnet6's Avatar
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    blue sky. use a CPL.

    ND is to cut off the light, like taking the waterfalls, slow down the time by 2stops(depending on wat u need).

    GND is same function. just onli have half side with ND.. that all..

  7. #7
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    Quote Originally Posted by wainism
    On a Bright Sunny Day...

    do u use a ND filter or do u use a Cir Polariser?

    what does a GND do?
    is it for...

    a strong back light(eg. sun behind subject,be it person or building) and i wanna correctly expose both? ie. the subject in the foreground is rightly exposed yet the sky is not washed out(over exposed)
    currently i have no NDs yet, so i always meter the person's face, in the end the sky is washed out!
    Strong backlight will not be solve by filters, you'll need either fill-in flash or reflector to brighten up the face.

  8. #8
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    then for buidlings? how to use flash to illuminate the building?!

  9. #9

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    Wait for lightning.

    Make me wonder will lighting trigger slave flash.

  10. #10
    Senior Member jnet6's Avatar
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    yes...(i hope the light enough)
    i tried using touch light and shine on the "receiving" sensor... it does trigger the flash on.

  11. #11
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    jnet6... care to share this torch light triggering technique?!?!

  12. #12
    Senior Member jnet6's Avatar
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    nothing "new".
    i just use a powerful touch like mag lite... shine at the receiving sensor.
    flash just trigger on.
    works esp, in a dark room with a mag lite suddenly on.......

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