Can you use a Canon Speedlite flash with a Sony A7? Yes! Here's how!
Built-in 2.4GHz X Wireless Radio System, when used with Godox X series TTL flash trigger, it can realize remote control, high speed sync and more
Godox TT600S Thinklite Flash 2.4G Wireless Speedlight Master/Slave for Sony A7 A7R A7S Mark II III A6500 A6300 A6000 RX100 DSLR Camera
Using the Canon 40mm Pancake Lens with a Sony A7
Mini Camera Flash Speedlite for Canon Nikon Pentax Olympus Sony A7 A7R A7S A7II NEX-6 A6000 A6300
Pixel TF-334 Hot Shoe Adapter For Converting Sony Mi A7 A7S A7SII A7R A7RII A7II Camera To Canon Nikon Yongnuo Flash Speedlite - AliExpress
Yongnuo YN685EX-RF 2.4GHz Wireless Flash Speedlite YN685EX-RF
TF-334 Mi Hot Shoes Adapter Converting For Sony A7 A7S A7SII A7R A7RII A7II Camera for Canon Nikon Yongnuo Flash Speedlite - AliExpress
Sony a7 III Mirrorless Camera with Flashpoint Zoom Li-ion R2 Speedlight ILCE7M3/B FL
Canon 600 EX-RT Speedlites with Sony A7 Cameras? Yongnuo to the Rescue - Photofocus
Opteka TTL Auto-Focus Dedicated Flash Speedlite (IF-500) for Sony a7r