Yong Nuo designed a new Speedlite transmitter compared to Original ST-E2, we improved and increased some new functions as below:
1, Ultra-AF: Improves the assist focus function, the max. focus distance can reach 25 meters.
| Indoor ( Meter ) |
| Speedlite Transmitter | 1 Flash | 2 Flashes | 3 Flashes |
NO.1 | NO.2 | NO.3 | NO.1 | NO.2 | NO.3 |
| 580EX | 580EX | 580EX | +NO.2 | +NO.3 | +NO1 | 　 |
| Yongnuo ST-E2 | 41.85 | 45.2 | 40.45 | 42.5 | 43.6 | 39.4 | 41.8 |
| Canon ST-E2 | 24.9 | 25.35 | 24.3 | 24.35 | 23.9 | 23.65 | 20 |
| | | | | | | | |
| | | | | | | | |
| Outdoor ( Meter) |
| Speedlite Transmitter | 1 Flash | 2 Flashes | 3 Flashes |
| NO.1 | NO.2 | NO.3 | NO.1 | NO.2 | NO.3 |
| 580EX | 580EX | 580EX | +NO.2 | +NO.3 | +NO1 | 　 |
| Yongnuo ST-E2 | 30 | 31.7 | 32.3 | 26.6 | 26.7 | 25 | 10.7 |
| Canon ST-E2 | 15.5 | 16.7 | 15.4 | 16.5 | 15 | 16.3 | 4.7 |
2, Access to Camera menu: You can set the relevant parameter of speedlite through access to the camera menu.
3, Support Exposure compensation: You can adjust the power output of the speedlite by using the flash and exposure compensation to make the photography effect meet your requirement.
4, Support Exposure Bracketing ( FEB ): Access to the camera menu to set the exposure bracketing function, it can help you to improve the success rate of photography.
5, Support Group C Flash: You can set the parameters of Group C flash via your camera's menu. ( Please kindly note that not all cameras provide this menu)
6, Modeling Flash: When the button of depth of field on the camera is pressed, it can control the speedlite to send out the modeling flash.
7, Rotatable: You can control the angle scope of the slave unit through rotaing the camera body ( left and right 135 degree ). This makes it easy to serve the slave unit and mett your multi-angle creative need.
8, Overheating Protection: If the controller is used too frequently, it's overheating protection function will be triggered, the ETTL and HSS indicator will blink alternatively, and the controller will be locked.
9, Power saving function: If the controller keep sidle for 2 minutes and then it will step into the dormancy state in order to save power, it will automatically shutdown after keeping idle for 15 minutes.Compatible Camera: Canon 1000D 550D 500D 450D 400D 350D 50D 40D
Compatible Flash
- Canon 550EX, 430EX, 430EX II, 580EX, 580EX II
- Nissin Di622, 622 Mark II, 866 (Canon shoe)
