User Guide

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4.2 General Hardware Setup
Powering up the IQ2 back
After an IQ2 back is connected to a camera body, insert a battery and it
will automatically turn on. The back is switched on/off by pressing the
power button located below the IQ2 back display.
ISO Settings
The IQ280 back has an ISO spectrum from ISO 35-800. The IQ260 has
a 50-800 spectrum and the Achromatic back has a ISO spectrum from
200-3200. The default ISO setting is 50 for IQ280 and IQ260 models
and 200 for the Achromatic. An ISO rating can be selected from the
menu system (when untethered) or in the Capture Tool in Capture One
Pro software (when tethered). Sensor+ technology, built into the Phase
One IQ Series models, expands the ISO range from 140 to 3200 at 20
megapixels resolution for the IQ280. The IQ260 models have a Sensor+
ISO range from 200 to 3200 at 15 megapixels resolution.
Power Management and Shutter Latency
The IQ2 back’s CCD needs to be constantly cleared of data from the
previous capture before the next exposure can be taken. This process
requires some power consumption. The default setting is Normal
Latency, which should remain unchanged under all ‘normal’ shooting
scenarios. Only change the setting to Zero Latency if you work on
technical cameras, large format cameras or certain manual cameras in
special situations.
Double Exposure Protection
It is not possible to accidentally double expose an image by capturing
one shot quickly after another when an IQ2 back is used on cameras
such as the Phase One 645DF+/DF/AF, Mamiya 645DF/AFDIII,
Hasselblad 555 ELD (DIG mode), Hasselblad H or Contax 645. The
electronic communication with the body ensures that the IQ2 back is
ready before allowing release of the next shot. However, users of other
camera bodies that do not use the electronic interface from the IQ2 will
have to wait for the ready beep signal before releasing the next shot.