PhaseOne XF - File Formats

47
IQ Digital Back Basic Settings
47XF Camera System Manual |
File Formats
Phase One has engineered a very clever RAW file format compression that we
named Intelligent Image Quality (IIQ). Two types of compression are used, a
completely losless format “IIQ L” and a near lossless compression “IIQ S”.
All IQ Digital Backs features output of the two RAW file formats IIQ L and IIQ
S.
The IQ3 100MP has an additional third IIQ L 16bit file format described below.
IIQ L and IIQ L 16bit are both completely lossless RAW formats designed for
the highest quality output (default).
The IIQ S option delivers a “Smart” compressed RAW file format, which with
its compression provides a faster capture rate and improved workflow.
However IIQ S is not completely lossless, but rather what we call near lossless.
Choose between formats by selecting Menu > Output File > File Format >IIQ L
16bit/ IIQ L / IIQ S.
Why IIQ L 16bit?
Both IIQ L and IIQ S are 16bit file formats when using CCD digital backs (IQ3
80MP/60MP, IQ280/260, IQ180/160/140).
The 50MP CMOS based digital backs (IQ3 50MP, IQ250 and IQ150) output
14bit data in IIQ L format.
The IQ3 100MP features a new and Improved CMOS file format “IIQ L 16bit”.
The IIQ L 16bit is, similar to the IIQ L, a completely lossless file format. It
handles output in full 16bit from the IQ3 100MP CMOS sensor which is a new
feature introduced with this special CMOS sensor.
While IIQ L 16bit provides the ultimate quality possible from the IQ3 100MP,
the file size is also larger and the capture rate slower when compared with the
IIQ L or IIQ S.
File Format
NOTE:
The IIQ S option can be used in almost all applications where it provides a completely
sucient quality – in fact the “Smart” compression is so good that it can be dicult to
see a dierence. However, there is a very small loss of data, and therefore Phase One does
not claim that IIQ S is completely lossless, but only what we call “near lossless”
IQ3 100MP IIQ L 16bit File Format