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    Re: Daytime Venus Rising Dip Short
    From: Bill B
    Date: 2012 May 09, 00:13 -0400

    On 5/3/2012 6:20 PM, Greg Rudzinski wrote:
    > I used an older 10 MP Canon Rebel with an adaptor to take a 1970's era
    > 200mm prime Pentax lens. The filter for the first photo had astronomy
    > mylar film over the lens (didn't work that good). The second image used
    > a pair of polarizers then the settings were at F22, ISO 100, and
    > 1/4000s. In iPhoto the image was cropped then adjusted for contrast,
    > exposure, etc.
    
    Were you using "old school" linear polarizing filters? (I am not clear
    if circular polarizing filters can be "crossed" to reduce light
    throughput.)
    
    There is a concern that linear filters can interfere with exposure and
    auto focus on digital cameras. Have you had experienced any exposure or
    focus problems?
    
    Bill B
    
    
    
    

       
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