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stereoviewer

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Posted on Tuesday, December 14, 2004 - 4:26 pm:   Edit PostDelete PostView Post/Check IPPrint Post
Is there a difference between fresnel lenses and regular screen magnifyers when it comes to image quality?
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Anonymous

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Posted on Wednesday, December 15, 2004 - 9:06 pm:   Edit PostDelete PostView Post/Check IPPrint Post
Yes in general but it ofcourse comes down to the quality of the piece. A lousy fresnel might be worse than a really good magnifier. Check the grooves per inch. That will tell you something. 50 and higher is good.
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Anonymous

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Posted on Thursday, December 16, 2004 - 4:13 am:   Edit PostDelete PostView Post/Check IPPrint Post
A magnifier tends to bent the image in an hourglass shape. A good Fresnel will maintain the shape of the image being magnified.
John
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Anonymous

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Posted on Thursday, December 16, 2004 - 4:54 pm:   Edit PostDelete PostView Post/Check IPPrint Post
http://www.icetec-uk.com/icetec/
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