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Photography Question 
John W. Oliver
 

Quartenary and Star Filters


Every picture I try to take using these filters creates hundreds of lines across the image, I cannot seem to get the cross or stars to be as "tight", as opposed to extending across the entire screen? How does one do this?


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12/19/2006 5:34:21 PM

 
Mike Rubin
BetterPhoto Member Since: 10/15/2004
  I think a lot has to do with the focal length/your distance from the light and the size of the light. The filters also come in different "points" such as cross, 4 point, etc..


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12/19/2006 5:38:31 PM

 
John W. Oliver  
 
  Crosses
Crosses
© John W. Oliver
Fuji FinePix S5200...
 
 
Here is an example of what I am talking about


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12/19/2006 5:41:56 PM

 
Mike Rubin
BetterPhoto Member Since: 10/15/2004
  I think that the red and green lights may be acting that way becaus of the type of lighting? I hope others respond to this.


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12/19/2006 6:04:46 PM

 
Bob Fately   Mike is correct, John - the reason you're not getting the star effect is because the neon lights are not point sources. Try a shot of cars approaching at night from a distance (the headlights effectively become point light sources) or perhaps a Christmas tree lit up at night.

When you have relatively large light sources, the star filter effect is lost.


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12/19/2006 10:40:19 PM

 
Bob Cammarata
BetterPhoto Member Since: 7/17/2003
  With those star filters, a wider aperture/shorter timed shutter speed will isolate the effect to the area surrounding only the pin-points of bright light.

You can also shoot filter-free with a very small aperature (f-22) and a long shutter and get a similar effect that's more natural looking.


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12/20/2006 3:02:59 AM

 
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