XF Camera System Manual |
Phase One IQ Digital Backs are compatible with a wide range of technical
cameras with the relevant body mount or adaptor, and the Live View option
for focussing and composition makes it a compelling solution, particularly the
CMOS based IQ Digital Backs.
IQ Digital Back Latency and Mechanical Shutters
The IQ Digital Back is equipped with two shutter latency mode settings;
Normal and Zero latency. With the IQ Digital Back set to Zero latency (select
IQ menu > Shutter Latency > Zero), the back will sync with the mechanical
shutter on the first release. Connect a standard (one-shot) sync cable between
the flash-sync port on the lens’ mechanical shutter and the multi-connector
port on the IQ Digital Back. Please note the Zero latency mode consumes
more battery power, as the back’s power management features are overridden.
With the IQ Digital Back set to Normal latency, battery life is extended but the
mechanical shutter of the technical camera must be tripped twice within a
four-second time frame. This requires a special two-shot sync cable. The first
release of the shutter activates the IQ Digital Back with a wake up signal, and
the second initiates the exposure. If the time limit of four-seconds is exceeded,
the IQ Digital Back gives a warning ‘beep’ followed by a ‘two shoot error’
display on the screen.
There are several automatic, or semi-automatic, two-shot solutions
(sometimes referred to as wake-up cables) available from third party
manufacturers to use with a mechanical shutter. Please ask your dealer for
more information.
Typical two-shot release procedure
1. Connect a two-shot sync cable to the multi-pin port on the IQ Digital
Back, and connect the other end of the cable to the flash sync port of the
mechanical lens. If flash is required, connect a flash sync lead to the IQ
Digital Back.
2. Ensure Normal latency is selected on the IQ Digital Back.
3. Close, or stop-down, the lens to the taking aperture, if necessary.
4. Push the trigger down slowly on the shutter release cable. The two-shot
cable will ready (wake-up) the IQ Digital Back and take a shot when it is
pushed all the way down.
Electronic Shutters
Several vendors make automatic lens controls that are compatible with the IQ
Digital Backs – Please ask your dealer for more information.
More information is available by searching for specific camera names in the
Phase One Knowledge base at: support.phaseone.com
IQ Digital Backs and
Technical Cameras
Zero latency setting
Normal latency setting
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