Adjusting The Lens; Iris Adjustments - Sony DSR-300 Service Manual

Iris Adjustments

Iris ring
Instant automatic
iris button
Iris selector
There are three ways of adjusting the iris:
automatically, manually, and with the instant
automatic iris adjustment function.
Iris adjustment
Adjustment method Operation
Automatic adjustment mode Set the iris selector
to the A position.
The iris is adjusted automatically to
adapt to changes in the brightness of
the subject. This is the mode for
normal shooting.
Manual adjustment mode Set the iris selector
to the M position
Use this mode in the following cases:
and turn the iris ring
• For special effects
as required.
• When filming a person with a very
bright sky background
• When shooting a subject with
extreme contrast
The zebra pattern can be used as a
guideline for iris adjustment.
Instant automatic adjustment With the iris selector
function in the M position,
While in manual adjustment mode, hold down the
instant automatic iris
this function makes a temporary
button for as long as
automatic adjustment.
necessary.
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Chapter 5 Adjustments and Settings
ZEBRA button
A.IRIS MODE switch
To make the image lighter when shooting
against the light
In the automatic iris adjustment mode, set the A.IRIS
MODE switch to BACK L, turning the indicator on.
To make the image clearer when shooting a
subject lit by a spotlight
In the automatic iris adjustment mode, set the A.IRIS
MODE switch to SPOT L, turning the indicator on.
Using the zebra pattern in manual
adjustment mode
To use the zebra pattern as a guideline for iris
adjustment in manual adjustment mode, press the
ZEBRA button to set it on.
Select the zebra pattern to be displayed in advanced
menu page 4 (see page 86).
• When the subject is a person
Adjust the iris manually so that the zebra pattern
appears on the highlights of the subject's face.
• For other subjects
Adjust the iris manually so that the zebra pattern
appears on the most important parts of the subject.

Adjusting the Lens

Adjusting the Iris Sensitivity
You usually need not adjust the iris sensitivity because
lenses are equipped with iris sensitivity adjustment
function.
In auto iris mode, if hunting or response delay
happens, adjust the iris sensitivity using the iris
sensitivity trimmer.
Iris sensitivity trimmer (S
or IRIS GAIN is indicated.)
You can see the iris sensitivity trimmer when
removing the gum cap on the front of the lens driving
unit. Use a mini-screwdriver to turn the trimmer. If
you turn it clockwise, the sensitivity increases, and if
you turn it counterclockwise, the sensitivity decreases.
It is recommended that you confirm the iris sensitivity
after replacing the lens.
For more information, refer to the operating instructions for
the lens (or consult the lens maker).
Macrophotography
Use the macro function when the subject is less than
about 1.1 m (4 feet) (for the VCL-714BXA) from the
front of the lens. It is possible to shoot close-ups down
to a range of 10 mm (wide angle, f = 7.5 mm).
2 3
1
4
ZOOM
M
1
Bring the lens up to the subject so that the image is
the required size.
2
Move the focusing ring to the closest focus
position.
3
Slide the MACRO button toward the rear of the
camcorder, and turn the MACRO ring fully in the
direction shown by the arrow.
4
Move the ZOOM selector to the M position, and
turn the manual zoom control to focus the image.
Ending close-up shooting
Return the MACRO ring to its original position (turn
fully in the opposite direction to the arrow in the
figure).
Reducing the size of the image
After completing steps 1 to 4 above, if you wish to
reduce the size of the image, turn the MACRO ring
back slightly, then use the manual zoom control again
to focus the image.
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Chapter 5 Adjustments and Settings