![Amazon.com : NEEWER Upgraded NW645II-C TTL Flash Speedlite, GN58 HSS Optical Slave Rear Curtain Sync Compatible with Canon EOS R6 R5 R3 R M6 850D 800D 760D 750D 650D 600D 7D Mark Amazon.com : NEEWER Upgraded NW645II-C TTL Flash Speedlite, GN58 HSS Optical Slave Rear Curtain Sync Compatible with Canon EOS R6 R5 R3 R M6 850D 800D 760D 750D 650D 600D 7D Mark](https://m.media-amazon.com/images/I/71gisGu-rbL._AC_UF350,350_QL80_.jpg)
Amazon.com : NEEWER Upgraded NW645II-C TTL Flash Speedlite, GN58 HSS Optical Slave Rear Curtain Sync Compatible with Canon EOS R6 R5 R3 R M6 850D 800D 760D 750D 650D 600D 7D Mark
![Using 2nd-Curtain (Rear Curtain) Flash Sync with Studio Strobes and Canon Cameras — PhotoJoseph Studios Using 2nd-Curtain (Rear Curtain) Flash Sync with Studio Strobes and Canon Cameras — PhotoJoseph Studios](https://images.squarespace-cdn.com/content/v1/508f0a16e4b044ecf46ec222/1389238090578-Y4NUIOM0NA9YZGFVU9FD/PhotoJoseph_IMG_0429.jpg)
Using 2nd-Curtain (Rear Curtain) Flash Sync with Studio Strobes and Canon Cameras — PhotoJoseph Studios
![Amazon.com : NEEWER Upgraded NW645II-C TTL Flash Speedlite, GN58 HSS Optical Slave Rear Curtain Sync Compatible with Canon EOS R6 R5 R3 R M6 850D 800D 760D 750D 650D 600D 7D Mark Amazon.com : NEEWER Upgraded NW645II-C TTL Flash Speedlite, GN58 HSS Optical Slave Rear Curtain Sync Compatible with Canon EOS R6 R5 R3 R M6 850D 800D 760D 750D 650D 600D 7D Mark](https://m.media-amazon.com/images/I/61EDiy1i3QL._AC_UF350,350_QL80_.jpg)
Amazon.com : NEEWER Upgraded NW645II-C TTL Flash Speedlite, GN58 HSS Optical Slave Rear Curtain Sync Compatible with Canon EOS R6 R5 R3 R M6 850D 800D 760D 750D 650D 600D 7D Mark
![Setting Rear Curtain Sync on Canon 5d Mark IV: I'm trying to learn more about flash photography and want to set my camera to 2nd curtain sync, but I can't figure out Setting Rear Curtain Sync on Canon 5d Mark IV: I'm trying to learn more about flash photography and want to set my camera to 2nd curtain sync, but I can't figure out](https://static.uglyhedgehog.com/upload/2019/7/21/t1-447526-shutter_synchronization.jpg)