Fotodiox Pro Arca Swiss 4x5 Right Angle View Finder Hood - Collapsible Focusing Monocular, Reflex Hood & Groundglass Cover with Magnifying Eyepiece Viewer for Arca Swiss 4x5 Large Format View Camera –
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Amazon.com : Opteka Voyeur Right Angle Spy Lens for Canon EOS Digital SLR Cameras (Attaches to 52mm and 58mm Threaded Lenses) : Camera Lenses : Electronics
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Amazon.com : Opteka Voyeur Right Angle Spy Lens for Canon EOS Digital SLR Cameras (Attaches to 52mm and 58mm Threaded Lenses) : Camera Lenses : Electronics
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Polaroid HD Right Angle Mirror (Spy) Lens 58mm 52mm Screw-In PLSPYLENS58 | eBay