This DIY camera attachment to hold 2 camera lenses together in the wrong direction. This either gives my zoom a 0.2X or 5.12X multiplication. (0.43X and 2.2X for $10 each) : r/functionalprint
Building a telescope from a telephoto camera lens - ATM, Optics and DIY Forum - Cloudy Nights
Build a Super Telephoto Lenses w/o Using a Camera Lens: DIY and Photo Experiments Forum: Digital Photography Review
Turn a Telephoto Lens Into a Spotting Scope or Telescope | Spotting scope, Lens, Scope
DIY Telephoto lens support – Part II – Filip Ghinea | Photography Chronicles
Build a Super Telephoto Lenses w/o Using a Camera Lens: DIY and Photo Experiments Forum: Digital Photography Review
Converting A Manual Camera Lens To Use Motorized Zoom And Focus | Hackaday
General Use F290 Diy Projector Glass Lens For 10-12 Inch Projector/projection Diy Home Cinema Rd-806 Lens - Accessories - AliExpress
Homemade Telephoto Lenses: The Basics | Homemade Lens | Flickr
How to Make a Telephoto Camera Lens Out of an Empty Pringles Can | PetaPixel
Markus Keinath - Homemade Fast Lenses
DIY Telephoto lens support – Part II – Filip Ghinea | Photography Chronicles
DIY Telephoto lens to Telescope! - ATM, Optics and DIY Forum - Cloudy Nights
Under $2 Telephoto Lens Tripod Mount : 4 Steps - Instructables
How to Build a Cheap and Easy Optical Zoom Lens for Your Smartphone « Photography :: WonderHowTo
How to Make a Lens from Scratch (Like, Literally Rocks and Sand)
Diy 3mp 1/2.5" 3.6mm 90 Degrees Angle View Cctv Fixed Ir Board Camera Lens M12 Mtv Lens Mount Screws For Analog Ip Camera Module - Cctv Lens - AliExpress
How to Hack a ZOOM Lens on a Camera? | DIY Camera Hack | - dArtofScience - YouTube
DIY: Making a Very Wide Angle Webcam on the Cheap - Scott Hanselman's Blog
A Zoom Lens For Your Webcam | Hackaday
DIY camera lens tutorial | Homemade Lens | Flickr
Video: How to make a DIY telephoto pinhole camera with a Pringles can: Digital Photography Review
How to Make a Lens from Scratch (Like, Literally Rocks and Sand)