Pentax K-5 Operating Manual page 205

Setting the RAW File Format
You can select PEF or DNG format in [RAW
File Format] of the [A Rec. Mode 3] menu
(p.90) when capturing images in RAW
format.
PENTAX's original RAW file format (default setting)
PEF
General-purpose, publicly available RAW file format designed by
DNG
Adobe Systems
Temporarily Changing the File Format using the
|/Y Button
When [One Push File Format] is assigned to the |/Y button, you can
temporarily change the file format.
1
Select [Button Customization] in the [A Rec. Mode 5]
menu and press the four-way controller (5).
The [Button Customization] screen appears.
2
Use the four-way controller (23) to select [|/Y
Button] and press the four-way controller (5).
The [|/Y Button] screen appears.
3
Press the four-way controller (5).
4
Use the four-way controller (23)
to select [One Push File Format]
and press the 4 button.
1 2 3 4 5
D-Range Setting
ISO AUTO Setting
High-ISO NR
Slow Shutter Speed NR
Program Line
Color Space
RAW File Format
MENU Cancel
RAW/Fx Button
One Push File Format
RAW
Exposure Bracketing
Digital Preview
Electronic Level
Composition Adjust.
MENU Cancel
203
ISO
AUTO
NR
AUTO
NR
PEF sRGB
DNG
OK OK
6
OK OK