Canon ST-E2 Instruction Manual

Pages 19

Year 1998

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of 19

Canon ST-E2 Specification

The Canon ST-E2 is a sophisticated wireless speedlite transmitter designed to enhance the capabilities of Canon EOS cameras by providing reliable and precise control over off-camera flash units. The device operates on an infrared signaling system, enabling seamless communication with compatible Canon Speedlites, making it ideal for creative lighting setups in both studio and outdoor environments. The ST-E2 supports E-TTL and E-TTL II autoflash systems, ensuring accurate and consistent exposure in a variety of lighting conditions. It can control multiple flash units across two distinct groups, allowing photographers to experiment with different lighting ratios for dynamic and nuanced image captures.

The unit offers a transmission range of approximately 10-15 meters indoors and 6-10 meters outdoors, depending on ambient lighting conditions and line of sight. With a compact and lightweight design, the ST-E2 is highly portable, fitting easily into most camera bags. Its user-friendly interface includes intuitive controls for adjusting flash settings, making it accessible to both novice and professional photographers. The device is powered by a 2CR5 lithium battery, providing efficient energy consumption and extended operational periods.

Additionally, the Canon ST-E2 features an AF-assist beam that aids in low-light focusing, enhancing the camera's autofocus performance in challenging conditions. The unit is compatible with a range of Canon EOS cameras and is designed to integrate seamlessly with existing Canon flash systems, offering a dependable solution for photographers seeking enhanced lighting control without sacrificing mobility.

Canon ST-E2 F.A.Q.

How do I set up the Canon ST-E2 for wireless flash control?

To set up the Canon ST-E2 for wireless flash control, attach the ST-E2 to your camera's hot shoe. Ensure that both the ST-E2 and the compatible Speedlite flashes are set to the same channel. Press the mode button on the ST-E2 until the wireless symbol appears. Adjust the flash ratio as desired using the ratio button.

What should I do if my Canon ST-E2 is not firing the remote flash?

Check that both the ST-E2 and the remote flash are set to the same channel. Verify that the remote flash is within the optical line of sight of the ST-E2 and that there are no obstructions. Ensure that the remote flash is powered on and has fresh batteries.

Can the Canon ST-E2 control multiple flashes simultaneously?

Yes, the Canon ST-E2 can control multiple Speedlite flashes that are set to the same channel. The ST-E2 can also adjust the flash output ratio between groups A and B to achieve the desired lighting effect.

How do I replace the battery in the Canon ST-E2?

To replace the battery in the Canon ST-E2, open the battery compartment by sliding the cover in the direction of the arrow. Remove the old 2CR5 lithium battery and insert a new one, ensuring the correct polarity. Close the battery compartment securely.

Why is the autofocus assist beam not working on my Canon ST-E2?

Ensure that the ST-E2 is securely attached to the camera's hot shoe. Check that the autofocus assist beam feature is enabled on your camera. If the beam still does not work, verify that the ST-E2 has sufficient battery power.

What is the effective range of the Canon ST-E2's wireless transmission?

The effective range of the Canon ST-E2's wireless transmission is approximately 10 to 15 meters (32 to 49 feet) indoors. The range may be affected by ambient light conditions and obstacles.

How can I improve the accuracy of the Canon ST-E2 in bright conditions?

To improve accuracy in bright conditions, try to position the ST-E2 closer to the remote flash units or adjust the angle to ensure a clear line of sight. Using a lens hood on the remote flash units can also help reduce interference from ambient light.

Is the Canon ST-E2 compatible with all Canon Speedlite models?

The Canon ST-E2 is compatible with many older Canon Speedlite models, such as the 550EX and 580EX. However, newer models may use different wireless technologies, so compatibility should be verified in the respective flash manuals.

How do I adjust flash ratios using the Canon ST-E2?

To adjust flash ratios with the Canon ST-E2, press the ratio button to toggle between the different ratio settings. The available options are 1:8, 1:4, 1:2, 1:1, 2:1, 4:1, and 8:1. Select the ratio that best suits your lighting needs.

What maintenance does the Canon ST-E2 require?

The Canon ST-E2 requires minimal maintenance. Keep the unit clean by wiping it with a soft, dry cloth. Avoid exposing it to extreme temperatures, moisture, or dust. Regularly check the battery compartment for corrosion and replace the battery as needed.