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Author Topic: Question on star trails, muiltple time exposures, and photoshop overlay [Locked]
Manesero
Posts: 32
Registered: 2001-12-21 13:39:15
http://www.flickr.com/photos/37565608@N06/3528812235/

I think your right on the noise. This photo merge was done with the overlay feature "lighten" rather than the overlay feature of "screen"


All the stars are a little blurry, but I know that my focus was set an infinity, any reasons why?

 

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kashani  1 star
Title: A Country Boy Can Survive
Posts: 162
Registered: 2003-11-12 09:36:30
The earth is revolving, and anytime you are using long shutter speeds, the slightest movement causes blur.
Thats why people have a hard time understanding that to photograph the moon correctly, you don't use slow shutter speeds or open apertures, but tighter apertures and faster shutter speeds.

 

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