Pentax K-r - Page 79

77420 - 78/107 -
[Caution]In histogram display, the peak position must be within following OK range.
If peak position is out of range (NG), confirm the setting or re-adjust BV and digital adjustment.

8-3.Shutter speed calculation
① Playback the image by histogram display and compare the peak position between standard data and
Tv4000. Then measure the difference (mm) on the monitor.
[Caution] Confirms it from the position of the front to the LCD monitor and do not make scratch on LCD
monitor.
 ≪Example≫

② Select the histogram zone (A~D) of the peak position of Tv 4000 from the below.
 * In the case of above, the histogram zone is B.
③ Obtain the shutter speed (ms) referring the conversion table.
 * In the case of above, difference of peak position is +1.0mm and histogram zone is B. Therefore,
the shutter speed is [0.263ms].
NG   OKNG   NG
Standard Tv
4000
+1.0mm
Standard
Tv250
(Tv500)
Tv4000
Playback (Histogram display)
(Y)0 64 128
64 80
104120
128
96 112
ABCD
(5/8)(7/8)
(0)(1/4)(1/2)(3/4)(1)
ABCD