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Thank you for purchasing the [pro]master 200ST-R.
The ProMaster 200ST-R speedlight is a high performance, feature-rich
unit designed to work with your camera's automatic and advanced
functions. It can work as your primary on-camera flash or slave unit in
a wireless, multiple flash setup (ProMaster ST1C required as master).
Here are some of the 200ST-R's features:
E-TTL lI Mode
In a Canon flash system, monitor pre-flashes are fired at all times. The
subject is correctly exposed and the overall exposure is less affected
by challenging ambient light conditions.
Manual Mode
By setting the camera’s aperture and the speedlight output level, you
can manually control exposure. 22 levels of light control are available
in manual mode.
Repeating Flash Mode (RPT)
The 200ST-R fires repeatedly to create stroboscopic multiple-
exposure effects in RPT Mode. This is useful when shooting a fast-
moving subject for a creative effect.
Flash Exposure Lock
Flash exposure Lock, or "FEL" controls the amount of flash exposure
for a subject .Using FELock with a compatible camera you can lock in the
appropriate flash exposure for the main subject . This flash exposure is
locked in, even if you change the aperture or composition, or zoom the
lens in and out.
HSS High-Speed Sync
High-Speed flash synchronization at the compatible camera's highest
shutter speed is possible. This is useful when you want to use a wider
aperture to achieve shallow depth of field to blur the background or
create a "stop-motion" effect in your photograph while shooting in
conditions with bright ambient light.
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