Canon EOS-1Ds Instruction Manual

166

Dedicated, high-performance power pack with a rated
voltage of 12 V. It can be recharged up to 500 times. When
fully charged, it enables the camera to take up to about
600 shots at normal temperature.

Quick charger dedicated to the Ni-MH Pack NP-E3. It
takes about 120 minutes to recharge one pack, and
excess recharging is prevented. Two packs can be
attached to it at one time. The discharge function takes
about 8.5 hours to cancel  the pack’s memory effect. It
runs on 100 - 240 VAC.

Flash photography with an EX-series Speedlite is as easy
as normal auto exposure shooting without flash. All EX-
series Speedlites enable E-TTL autoflash, high-speed
sync (FP flash), and FE lock. With the 550EX, an easy-to-
use, wireless E-TTL autoflash system is possible with
multiple Speedlites.

The EX-series Macro Ring Lites are ideal for macro flash
photography.
You can fire only one or both flash tubes and control the
flash ratio to easily obtain sophisticated lighting effects
with E-TTL autoflash. Also, high-speed sync (FP flash), FE
lock, and a multi-Speedlite, wireless system (with 550EX
as a slave) are possible to achieve various macro flash
effects.