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JVC GY-HD Series Camera Systems
GY-HD 100 & 200 series ProHD HDV camcorders & decks.


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Old December 19th, 2006, 08:29 PM   #1
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Filter For Stock Lens Ca?

Is there any screw on filter one can apply to the stock lens in order to limit that annoying purple green chromatic abberation that so often happens with the stock lens for the hd100?
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Old December 21st, 2006, 01:43 PM   #2
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Just avoid using the iris fully opened. If you apply a filter you lose light anyway...
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Old December 21st, 2006, 02:12 PM   #3
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Originally Posted by Diogo Athouguia
Just avoid using the iris fully opened. If you apply a filter you lose light anyway...
Hi Diogo,

Is there a "sweet spot" iris setting in your opinion? I'm a newbie. Thanks.
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Old December 21st, 2006, 02:22 PM   #4
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Originally Posted by Chris Rentzel
Hi Diogo,

Is there a "sweet spot" iris setting in your opinion? I'm a newbie. Thanks.
Somewere between fully opened and f2. Just point to a white wall on a low light room and close the iris until you find that spot. You can make the CA almost disapear without losing much light.
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Old December 21st, 2006, 02:40 PM   #5
 
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CA on the 16x5.5 fujinon lens is a function, mostly, of zoom position. CA is worst when zoomed fully in. While stopping down may mitigate the CA problem, it won't eliminate it at full zoom. I've just learned not to use that last bit of zoom. No filter, short of a magical one, can make optics better than they were designed. There's a plugin available for VirtualDub that helps with the CA problem, but, it's use is somewhat problemattic.
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