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ponelli

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  1. Like
    au8ust
    ponelli got a reaction from au8ust in Ways to avoid white Vignetting?   
    hello everyone -
    i would like to share some informations with you:
    i´ve got an isco pre36 lens. and i always had problems with these "undefined" flairs in case of straight spotlight into the lens.
    the isco is based on a 35 mm nikon lens (aps-c sensor). i found a way to eleminate theses "false flairs", like hans punk described it:
    i cut out masks with differnt innercircle sizes: from 17-30 mm (see photo) and found out that 21mm inner circle diametre is the perfect compromise between getting rid of the problem and not loosing to much light on the sensor.
    here is a little trick: i found out that the old arriflex-lenscap from the bajonett mount (backside of the lens) fits perfectly on the pre 36. i screwed a hole with a diametre of 21 mm in ....here is the result:
     
     
  2. Like
    Tito Ferradans
    ponelli got a reaction from Tito Ferradans in Ways to avoid white Vignetting?   
    hello everyone -
    i would like to share some informations with you:
    i´ve got an isco pre36 lens. and i always had problems with these "undefined" flairs in case of straight spotlight into the lens.
    the isco is based on a 35 mm nikon lens (aps-c sensor). i found a way to eleminate theses "false flairs", like hans punk described it:
    i cut out masks with differnt innercircle sizes: from 17-30 mm (see photo) and found out that 21mm inner circle diametre is the perfect compromise between getting rid of the problem and not loosing to much light on the sensor.
    here is a little trick: i found out that the old arriflex-lenscap from the bajonett mount (backside of the lens) fits perfectly on the pre 36. i screwed a hole with a diametre of 21 mm in ....here is the result:
     
     
  3. Like
    heart0less
    ponelli got a reaction from heart0less in Ways to avoid white Vignetting?   
    hello everyone -
    i would like to share some informations with you:
    i´ve got an isco pre36 lens. and i always had problems with these "undefined" flairs in case of straight spotlight into the lens.
    the isco is based on a 35 mm nikon lens (aps-c sensor). i found a way to eleminate theses "false flairs", like hans punk described it:
    i cut out masks with differnt innercircle sizes: from 17-30 mm (see photo) and found out that 21mm inner circle diametre is the perfect compromise between getting rid of the problem and not loosing to much light on the sensor.
    here is a little trick: i found out that the old arriflex-lenscap from the bajonett mount (backside of the lens) fits perfectly on the pre 36. i screwed a hole with a diametre of 21 mm in ....here is the result:
     
     
  4. Like
    Timotheus
    ponelli got a reaction from Timotheus in Ways to avoid white Vignetting?   
    hello everyone -
    i would like to share some informations with you:
    i´ve got an isco pre36 lens. and i always had problems with these "undefined" flairs in case of straight spotlight into the lens.
    the isco is based on a 35 mm nikon lens (aps-c sensor). i found a way to eleminate theses "false flairs", like hans punk described it:
    i cut out masks with differnt innercircle sizes: from 17-30 mm (see photo) and found out that 21mm inner circle diametre is the perfect compromise between getting rid of the problem and not loosing to much light on the sensor.
    here is a little trick: i found out that the old arriflex-lenscap from the bajonett mount (backside of the lens) fits perfectly on the pre 36. i screwed a hole with a diametre of 21 mm in ....here is the result:
     
     
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