12. FEATURES OF THE CAMERA SECTION

12-2 IRIS (Brightness) Adjustment

 

12. FEATURES OF THE CAMERA SECTION

12-3

Adjusting the Shutter Speed

ADJUSTMENT OF LENS IRIS

The lens iris can be adjusted using any of the

Adjust the shutter speed to obtain special effects or when shooting scenes with slow-moving subjects.

Iris ring

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

POWER VTR

Setting

Set the SHUTTER item on the CAMERA OPERATION menu screen.

STEP

: The shutter speed is changed in fixed steps.

VARIABLE: The shutter speed is changed with variable scan.

 

This setting is used for shooting the screen

 

image on a computer monitor, etc.

Operation

RET

M

 

A

W T

Temporary auto iris button

Iris mode switch

is activated only while this temporary auto iris 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 method.

Setting the AUTO IRIS LEVEL switch of the camera See “SWITCH FUNCTIONS” on page 84.

 

SHUTTER

STA

 

 

SHUT-

 

 

 

TER

 

 

 

dial

 

MENU

 

CAMERA OPERATION menu screen

––– CAMERA OPERATION –––

SHUTTER

 

STEP

FAW

 

 

NONE

GAIN

L

 

0dB

GAIN

M

 

6dB

GAIN

H

 

9dB

1. Rotate the SHUTTER dial while the normal screen is shown. (when menu screens are not displayed). (If “SHUTTER OFF” is displayed, press the SHUTTER dial.)

The current shutter speed is shown on the LCD monitor or in the viewfinder for approximately 3 seconds.

2. Rotate the SHUTTER dial while the shutter speed is shown. Rotating the dial downward makes the shutter slower, and rotating it upward makes it faster.

3. Stop rotating the SHUTTER dial when the desired shutter speed is indicated. The set shutter speed value is displayed for about 3 seconds on the LCD monitor or in the viewfinder. Setting range STEP: 1/7.5, 1/15, 1/30, 1/60, 1/100, 1/250, 1/500, 1/1000, 1/2000, 1/4000, 1/10000 VARIABLE: 1/60.1 Hz to 1/2084.6 Hz

ZEBRA PATTERN DISPLAY DURING MANUAL ADJUSTMENT

LOLUX GAIN

 

30dB

SMOOTH TRANS

 

OFF

SPOT L/BACK

L

MIDDLE

ASPECT RATIO

 

4:3

PAGE BACK

 

 

To return the shutter speed to the initial setting, press

the SHUTTER dial.

OFF ZEBRA

ON

SKIN

AUTO

AREA

WHITE

 

 

 

ACCU

 

 

FOCUS

 

VTR

AUDIO

 

 

LEVELE CH-1

 

 

5

By setting the switch to ON, oblique stripes (zebra pattern) can be imposed on the viewfinder or LCD areas having luminance levels in accordance with the menu settings made for the video signal. The zebra pattern can be used as a reference for manual iris adjustment.

The initial setting is 70 to 80%. However, using the ZEBRA setting on the LCD/VF (1/2) menu screen, zebra patterns can be displayed in the sections with a luminance level of 85 to 95%, over 95% and over 100%.

See “LCD/VF Menu Screen” on page 73.

Initial setting: OFF (“SHUTTER OFF” is indicated on the

screen.)

SHUTTER 1/1000

ZEBRA switch

Shutter speed indication

SHUTTER OFF

Indication of initial shutter speed value

80

81

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Image 42
JVC GY-DV5000 Iris Brightness Adjustment, Adjusting the Shutter Speed, Lens iris can be adjusted using any, Operation