Make a LED light ring for macro photography with CircuitPython @sparkfun by @thingsrobmade « Adafruit Industries – Makers, hackers, artists, designers and engineers!
Sigma EM-140 DG Macro Ring Flash for Canon SLR Cameras - Walmart.com
Amazon.com : PLOTURE Flash Light with LCD Display Adapter Rings and Flash Diff-Users Works with Canon Nikon and Other DSLR Cameras : Electronics
Canon MR-14EX II Macro Ring Lite Flash at Acephoto.net
Amazon.com : Godox ML150II Macro Ring Flash on Camera Ring Flash Light GN12 CCT 5800K±200K for Fuji, for Canon, for Nikon, for Sony, for Olympus Camera : Electronics
Photo- Shoot : Ring Light and Macro Flowers | Stephen Haunts Photography
Nissin Flash - #NissinFlash MF18 Ring Light for Macro Photography | Facebook
Top 5 Best Ring Flashes For Macro, Portrait Photography & More! | TP