User Guide

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4.0 Introduction to the IQ2 Series Digital Back
System Overview
The Phase One IQ2 Series Digital Back is designed to t on the Phase
One 645DF+ as well as several other brands or models of medium
format cameras.
The IQ2 Series include four different models; the IQ280, IQ260 and
the IQ260 Achromatic, and the new IQ250. The backs incorporate 80
and 60-megapixel CCD sensors for the IQ280 and two IQ260 models
repectively, and a newly developed 50-megapixel CMOS sensor for
the IQ250. They also feature USB3.0 and FireWire 800 connections
facilitating the fastest possible tethered image transfers speeds.
All four models have a 3.2 inch touch display that features 1.15
megapixel resolution. The wide format display allows for a full 4:3
aspect ratio VGA resolution image next to histogram, highlight warning,
focus mask, File Info, and touch controls. This touch screen display is
complemented by Phase One’s intuitive 4-button navigation.
Phase One’s patent-pending Sensor+ technology, built into the Phase
One IQ2 Series models, supports a variety of shooting conditions.
Images can be captured at full resolution or, using Sensor+ mode,
switch instantly to capture images with 20 megapixels* resolution at 4
times higher sensitivity, up to ISO 3200. Please note the IQ250 does not
adopt Sensor+ technology.
The following section deals with generic features that are available in all
four IQ2 Series digital back models.
* The IQ280 produces 20 megapixel resolution and both the IQ260 and IQ260 Achro-
matic produce 15 megapixel resolution when the Sensor + mode is activated.
Warning: This is a class A product. In a domestic environment this product may cause radio interference in
which case the user may be required to take adequate measures.