User guide

Controlling image capture
STINGRAY Technical Manual V4.4.4
195
Example: Stingray F-033
register value x time base = exposure time
100 x 20 µs + 27 µs = 2027 µs exposure time
The minimum adjustable exposure time set by register is 4 µs.  The real
minimum exposure time of Stingray F-033 is then:
4 µs + 27 µs = 31 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 Table 66: Cam-
era-specific minimum exposure time on page 194).
Stingray F-201 4 µs 4 µs + 44 µs = 48 µs
Stingray F-504 4 µs 4 µs + 38 µs = 42 µs
Camera Register value Time base (default)
Stingray F-033 100 20 µs
Table 67: Register value and time base for Stingray F-033
Register Name Field Bit Description
0xF100020C EXTD_SHUTTER Presence_Inq [0] Indicates presence of this feature (read
only)
--- [1.. 5] Reserved
ExpTime [6..31] Exposure time in µs
Table 68: Advanced register: Extended shutter
Camera model Minimum exposure time Effective min. exp. time
= Min. exp. time + offset
Table 66: Camera-specific minimum exposure time