Why don't you shoot M42 with a 500mm mirror lens?? This is why.: Astrophotography Talk Forum Forum: Digital Photography Review
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Amazon.com : Bower High-Power 500mm f/6.3 Telephoto Mirror Lens (SLY50063) : Digital Slr Camera Lenses : Electronics
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Has anyone tried the Samyang mirror lenses? - DSLR, Mirrorless & General-Purpose Digital Camera DSO Imaging - Cloudy Nights
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Has anyone tried the Samyang mirror lenses? - DSLR, Mirrorless & General-Purpose Digital Camera DSO Imaging - Cloudy Nights
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DSLR+500mm F/6.3 mirror lens - Page 2 - DSLR, Mirrorless & General-Purpose Digital Camera DSO Imaging - Cloudy Nights
Why don't you shoot M42 with a 500mm mirror lens?? This is why.: Astrophotography Talk Forum Forum: Digital Photography Review
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