Pentax K-7 Operating Manual page 17

• Records intheversatile JPEG formatorthehighquality andfully
editable RAW format. Y oucanalsoselect J PEG+RAW andrecordin
bothformats. P ictures takenin RAW formatcanbeeasilyprocessed
internally b ythecamera.
• Features C ustom Image andWhite Balance which allowyouto readjust
images shotinJPEG formatwithout a ffecting theimage quality.
• Supports t heoptional Battery GripD-BG4 withvertical shutter release
button. I f a battery (D-LI90) i s inserted inboththecamera andgrip,the
battery withmorepower is prioritized. Thisenables y outogetthebest
camera performance foranextended period. A menuitemalsoallows
youtoprioritize a battery anduseitsfullpower before switching t o the
otherbattery.
The captured area (view angle) wilt differ between the/_'-7 and 35 mm SLR
cameras even if the same tens is used because the format size for 35 mm film
and CMOS sensor are different.
Sizes for 35 mm film and CMOS sensor
35 mm film : 36x24 mm
/_-7 CMOS sensor : 23.4x15.6 mm
Angles of view being equal, the focal length of a lens used with a 35 mm camera
must be approximately 1.5 times longer than that of IC-7. To obtain an angle
of view framing the same area, divide the focal length of the 35 mm lens by 1.5.
Example) To capture the same image as a 150 mm lens attached to a 35 mm
camera
150+1.5=100
Use a 100 mm lens with the/C-7.
Inversely, multiply the focal length of the tens used with the /_-7 by 1.5 to
determine the focal length for 35 mm cameras.
Example) If 300 mm lens is used with the/C-7
300xl .5=450
Focal length is equivalent to a 450 mm lens on a 35 mm camera.
Shake Reduction (SR)
Shake Reduction (SR) on the/_'-7 features a PENTAX original system
which uses magnetic force to move the image sensor at high speeds,
compensating camera shake.
The camera may generate some operating noise when it is shaken, such
as when changing the composition of a picture. It is not a malfunction.