Canon Speedlite 550EX Instruction Manual

Canon Speedlite 550EX manual cover
Pages 128
Year 1998
Language(s)
English en

Canon Speedlite 550EX Specification

The Canon Speedlite 550EX is a high-performance flash unit designed to complement and enhance Canon's EOS series cameras. It features advanced E-TTL (Evaluative Through-The-Lens) autoflash control, which ensures precise and consistent flash exposure by analyzing pre-flash data and ambient light. The unit boasts a powerful guide number of 180 feet (55 meters) at ISO 100, making it ideal for both professional and enthusiast photographers who require robust lighting solutions.

The 550EX offers versatile flash coverage, supporting a zoom range of 24mm to 105mm, and it automatically adjusts to match the camera's lens focal length, providing optimal illumination. It is compatible with Canon's wireless flash system, enabling it to function as both a master or slave unit in multi-flash setups, which is invaluable for complex lighting arrangements. The unit supports high-speed sync, allowing flash photography at shutter speeds exceeding the camera's normal sync speed, which is particularly useful for outdoor portraiture in bright conditions.

The flash head tilts and swivels, facilitating bounce flash techniques and reducing harsh shadows for more natural-looking images. The Canon Speedlite 550EX is powered by four AA batteries, offering a balance between portability and power efficiency. Its user interface is intuitive, featuring a backlit LCD screen that provides clear information on settings and modes. Custom functions are available for tailoring flash operation to specific shooting needs. In summary, the Canon Speedlite 550EX is a versatile and powerful tool, designed to meet the demands of photographers who require flexibility and reliability in their flash photography endeavors.

Canon Speedlite 550EX F.A.Q.

How do I set up the Canon Speedlite 550EX for wireless flash operation?

To set up the 550EX for wireless flash, switch the flash to 'slave' mode by sliding the wireless switch to 'SL'. Ensure the master flash is set to 'master', and both units are on the same channel.

What are the steps to update the firmware on the Canon Speedlite 550EX?

The Canon Speedlite 550EX does not support firmware updates as it is an older model. Ensure to check the manual for any specific feature settings or adjustments.

Why is my Canon Speedlite 550EX not firing?

If the 550EX is not firing, check the following: ensure the flash is securely attached to the camera, the power is turned on, batteries are charged, and the flash is not in a mode that prevents firing, such as 'slave' mode without a master flash.

How can I extend the battery life of my Canon Speedlite 550EX?

To extend battery life, use high-capacity NiMH rechargeable batteries, reduce flash power when possible, and turn off the flash when not in use. Consider using external battery packs for prolonged sessions.

What is the best way to clean and maintain the Canon Speedlite 550EX?

To clean the 550EX, use a soft, dry cloth to wipe the exterior. Avoid using cleaning solutions. Ensure the battery compartment is clean and dry, and store the flash in a cool, dry place.

How do I set the custom function settings on the Canon Speedlite 550EX?

To set custom functions, press and hold the 'Mode' button until 'C.Fn' appears on the LCD. Use the dial to select the desired function number, then press 'Set' to adjust the setting.

What should I do if the Canon Speedlite 550EX overheats?

If the 550EX overheats, turn it off and allow it to cool down. Avoid continuous high-speed firing, and ensure adequate ventilation around the flash unit.

Can the Canon Speedlite 550EX be used with other camera brands?

The 550EX is designed for Canon cameras with E-TTL metering. It can be used with other brands in manual mode, but automatic features may not work correctly.

How do I reset the Canon Speedlite 550EX to factory settings?

To reset the 550EX, turn off the flash, press and hold the 'Mode' and 'SEL' buttons simultaneously, and then turn the flash back on while holding these buttons.

What is the guide number of the Canon Speedlite 550EX and how does it affect flash photography?

The guide number of the Canon Speedlite 550EX is 55 meters at ISO 100. It determines the flash's power and the distance over which it can illuminate subjects. A higher guide number indicates greater flash range.