User Manual

5
Fill-in ash
Instead of a primary light source, ash is often
used to supplement ambient light. One of
the most common uses of this approach is
brightening the harsh shadows created by
intense sunshine. Known as ‘ll-in ash’,
this technique is completely automated
by Canon’s E-TTL II ash metering. Flash
exposure compensation can be used to vary a
Speedlite’s brightness, thereby adjusting the
balance of ambient light to ash.
High-speed sync (FP)
When attempting ll-in ash, bright daylight
conditions can sometimes necessitate the
use of a shutter speed that is faster than the
camera’s maximum ash synchronisation
speed – i.e. the shortest shutter speed where
the shutter opens fully during the exposure.
With conventional ash this is problematic,
leading to dark bands across the frame, but
with Canon Speedlites and EOS cameras,
high-speed sync (FP) technology allows any
shutter speed to be used with ash, right up
to 1/8000sec.
Camera: Canon EOS 70D
Tv (Shutter Speed): 1/125 sec
Av (Aperture Value): f/16.0
ISO Speed: 100
Lens: EF 24-70mm f/2.8L USM
Focal length: 63.0 mm
Flash: Speedlite 600EX-RT