Red Dot Finder : The LED illuminates a pin-hole at the focus of the lens. The eye sees an image of the pinhole at infinity. You use the finder with both eyes open, one eye looking into the lens, the other looking at the sky. Your brain...
Red Dot Finder : The LED illuminates a pin-hole at the focus of the lens. The eye sees an image of the pinhole at infinity. You use the finder with both eyes open, one eye looking into the lens, the other looking at the sky. Your brain...
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