| 13. FEATURES OF THE CAMERA SECTION |
| IRIS (Brightness) Adjustment |
13. FEATURES OF THE CAMERA SECTION
ADJUSTMENT OF LENS IRIS
Iris ring
RET | M |
| A |
W T
Temporary auto iris button
Iris mode switch
The lens iris can be adjusted using any of the following three methods.
•Automatic adjustment
Set the iris mode switch to "A" (Auto). The iris is adjusted automatically according to the brightness of the object.
•Manual adjustment
Set the iris mode switch to "M" (Manual). The iris can be adjusted manually by rotating the iris ring.
•Temporary auto iris adjustment
During manual iris adjustment, the auto iris adjustment mode is activated only while this button is held depressed.
Changing the auto iris adjustment setup
Under special lighting conditions such as backlight, it is often appropriate to change the value set by the auto iris adjustment.
This can be done by the following methods.
•Setting the AUTO IRIS LEVEL switch of the camera ☞ See "SWITCH FUNCTIONS" on page 90.
Band
Video monitor
| NG | OPERATE |
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SHUTTER dial |
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- | - - | OPERAT | I ON |
| - - | - | |
SCENE | F I L E | A |
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ASPECT | RAT I O |
| : | 4 | : 3 |
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SHUT TER |
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| : VAR I ABL E | |||
Outline
The following operation allows the alignment of the shutter speed of the camera with the variable scanning rate of a computer monitor or display. When a computer monitor screen or display is shot with the camera, a bright horizontal line indicating excessive exposure is displayed in cases when the scanning rate of the monitor is faster than the shutter speed of the camera. A dark horizontal line indicating insufficient exposure is displayed in cases when the monitor's scanning rate is slower than the camera's shutter speed. The scanning frequency of a monitor varies due to various reasons during the computer operation. Adjust the scanning rate to obtain a stable image while observing the image in the viewfinder.
Variable Scan [V.SCAN]
•Basic operation
Set the SHUTTER item on the OPERATION MENU screen to VARIABLE. Then move the SHUTTER knob upwards or downwards to change the shutter speed.
(The speed is displayed on the viewfinder screen.)
•Compatible frequencies
The variable scan function is compatible with scanning frequencies in the following range.
60.1 Hz to 2084.6 Hz (U MODEL)
50.1 Hz to 2067.8 Hz (E MODEL)
ZEBRA PATTERN DISPLAY DURING MANUAL ADJUSTMENT
FAW |
| : NONE |
GA I N | L | : 0 dB |
GA I N | M | : 9 d B |
GA I N | H | : 1 8 d B |
SMOOTH TRANS | : OFF | |
CAUTION:
This function is not compatible with
PUSH
OFF ZEBRA
ON | SKIN |
| AUTO |
AREA |
| WHITE | |
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| ACCU |
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| FOCUS |
| VTR | AUDIO | TAKE |
| LEVEL | ||
ZEBRA switch
By setting the ZEBRA switch to ON, oblique stripes (zebra pattern) can be displayed in the sections with a luminance level of 70% to 80% or sections with levels over 100% in the viewfinder. The zebra pattern can be used as a reference for manual iris adjustment. When adjusting the iris manually, adjust it so that the zebra patterns are displayed in the section that you want to stress in the subject.
•When CHARACTER of the Camera SETUP Menu screen is set to ON, the zebra pattern will also appear in the MONITOR OUT connector video.
•The zebra pattern will also appear during color bar output when the ZEBRA switch is set to ON.
•The initial setting is 70 to 80%. However, using the "ZEBRA" setting on the VF DISPLAY MENU, zebra patterns can be displayed in the sections with a luminance level of 85% to 95%, over 95% and over 100%.
☞See "VF DISPLAY MENU Screen" on page 78.
SPOT | L / BACK | L | : M I DDL E |
PAGE | BACK |
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OPERATION MENU screen
87 | 88 |