Controlling image capture
PIKE Technical Manual
V5.0.0
198
Example: Pike F-032
register value x time base = exposure time
100 x 20 µs + 17 µs = 2017 µs exposure time
The minimum adjustable exposure time set by register is 1 µs.
The real
minimum exposure time of
Pike F-032
is then:
1 µs + 17 µs = 18 µs
Extended shutter
The exposure time for long-term integration of up to 67 seconds can be
extended via the advanced register: EXTENDED_SHUTTER
The longest exposure time, 3FFFFFFh, corresponds to 67.11 sec.
The lowest possible value of
ExpTime
is camera-specific (see
era-specific minimum exposure time
Pike F-505
1 µs
1 µs + 26 µs =
27
µs
Pike F-1100
1 µs
1 µs + 128 µs =
129
µs
Pike F-1600
1 µs
1 µs + 635 µs =
636
µs
Camera
Register value
Time base (default)
Pike F-032
100
20 µs
Table 66: Register value and time base for
Pike F-032
Register
Name
Field
Bit
Description
0xF100020C
EXTD_SHUTTER
Presence_Inq
[0]
Indicates presence of this feature (read
only)
---
[1.. 5]
ExpTime
[6..31]
Exposure time in µs
Table 67: Advanced register:
Extended
shutter
Camera model
Minimum exposure time
Effective min. exp. time
= Min. exp. time + offset
Table 65: Camera-specific minimum exposure time