WolfVision VZ-35 - Manual (Page 16)

16
Other settings that can be changed:
CCD IRIS
Set CCD IRIS to OFF if the monitor picture is flickering. This can occur with a light, working with a
different frequency. In such case, set CCD IRIS to OFF and shutter speed to FL (see next page).
Also set CCD IRIS to OFF if you work with fluorescent light. As this may cause slow variations in color
to the picture.
SHUTTER (electronic shutter)
The electronic shutter allows you to obtain blur-free pictures of a fast moving subject, and if used
together with a frame memory device, adequately bright pictures of low-illuminated subjects.
Note that the SHUTTER function is effective only when CCD IRIS is set to OFF.
OFF: for inactivating the electronic shutter
STEP: for setting the shutter speed to one of the following eight: FL, 1/125, 1/250, 1/500, 1/1000,
1/2000, 1/4000 and 1/10000 sec.
FL gives flickerless pictures. even under fluorescent light.
MANU: for adjusting the shutter speed in units of frame or horizontal scan cycle time (H) in the
following range:
In units of frame:FLD mode (see page 17): 255 to 001
FRM mode (see page 17): 256 to 002
In units of H:310/625 to 1/625 (PAL) or 260/525 to 1/525 (NTSC)
Note: When SHUTTER is set to MANU do not use the AGC function or the white balancing function.
Adjusting the shutter speed in units of frame:
For example if the setting is 050 (equivalent of about 1.7 seconds in NTSC or 2 seconds in PAL) the whole
amount of video signal accumulated during this set time will be output in the form of one complete picture
(or one still frame) at intervals of about 1.7 seconds or 2 seconds depending on the television standard.
These pictures, which contain 50 frames of video information are much brighter than normal one-frame
pictures. Therefore this mode of setting the shutter speed is very useful for shooting a low-illuminance
subject in a dark place.
Scanning computer monitors or another TV standard
Adjusting the shutter speed in units of H (1 H = 64.0
m
sec in PAL or 63.56
m
sec in NTSC):
This function reduces a noise which appears as horizontal stripes when shooting computer screen displays
for example (Clear Scan function). While checking the image on the monitor screen, you can make
adjustment using the Data up and Data down keys to obtain a picture showing the least possible horizontal
stripe noise. This function can also be used to scan a PAL monitor with a NTSC Visualizer or to scan
a NTSC monitor with a PAL Visualizer without horizontal stripe noise.
Visualizer Computer
For this just place the computer monitor (or TV
monitor) in front of the Visualizer (as shown in
the drawing), switch off the light with the Light
off key (#23), tilt the reflector head and zoom in
on the monitor.
The following adjustments have to be made (see page 14 for how to change the camera adjustments):
- CCD Iris: off
- Shutter: manu
- Step: FL
- Manu: (adjustment according to the type of scanned monitor - try the best setting)