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View Full Version : filter for the "star" light effect?



neoserenity333
11-27-2007, 07:40 AM
sorry if this is a stupid question, but do you need a special filter to achieve the effect of the star-like rays of light (seen on the bridge) in this photo?
http://www.flickr.com/photo_zoom.gne?id=2068183236&size=l

thank you!

VTEC_EATER
11-27-2007, 07:49 AM
No, you do not.

Those "star" effects on the lights comes from a small aperture (F/16 or F/22 for example) and long exposure. All lenses will do this, however, some lenses will provide a more appealing "star" than others. Some lenses with 6 aperture blades may only produce a 6 sided star, but a lens with a 9 bladed design may produce 9 or 13 sided "stars."

I happen to like more sides than less because it looks more evenly distributed and doesn't distract me from the rest of the photo.

In other words, I wouldn't spend the money on a "star" filter.

JLV
11-27-2007, 06:53 PM
Another method I remember reading about 40 years ago, is to hold a piece of window screen in front of the lens. Two pieces held diagonally to each other will give a greater effect.

neoserenity333
11-29-2007, 04:01 PM
thank you both!

fred333
12-14-2007, 09:26 AM
Never knew that about the window screen. Great tip.