Mounting And Adjusting The Lens - Sony PXW-X400KF Operating Instructions Manual

000 26
2. Preparation

Mounting and Adjusting the Lens

[Note]
When connecting or disconnecting the lens cable to this
connector, power off the camcorder first.
Attaching a Lens
This section describes how to attach the lens
supplied with the PXW-X400KF as an example.
1
Push the lens locking lever up and remove the
lens mount cap from the lens mount.
2
Align the center pin on the lens with the
center slot in the lens mount, and insert the
lens into the mount.
2
1
3
Holding the lens in place, push the lens
locking lever down to lock the lens.
[Caution]
If the lens is not firmly locked, it may come off
while the camcorder is being used. This could
cause a serious accident. Make sure the lens is
firmly locked. It is recommended that the lens
mount securing rubber be put on the lens
locking lever as illustrated below.
Lens mount securing rubber
4
Connect the lens cable to the LENS connector.
5
Secure the lens cable with the cable clamp.
If an aberration correction lens is attached
The aberration correction function is activated
automatically. Starting the camcorder with an
1)
aberration correction lens may require more time
than normal because of data loading at start-up.
The lens supplied with the PXW-X400 is an
1
aberration correction lens. Contact a Sony sales or
service representative for information about other
aberration correction lenses.
1) The aberration correction function does not operate if
Maintenance >Camera Config >ALAC in the setup menu
is set to Off.
Adjusting the Flange Focal Length
If the lens does not stay in focus properly as you
zoom from telephoto to wide angle, adjust the
flange focal length (the distance from the plane
of the lens mounting flange to the imaging plane,
also called flange-back).
Make this adjustment just one time after mounting
or changing the lens.
When carrying out the adjustment, use a flange
focal length adjustment chart as the subject.
3
[Notes]
ˎ If you use a subject with insufficient contrast, or move the
ˎ
camcorder or subject during adjustment, this will cause
an adjustment error.
ˎ Place the subject (the flange focal length adjustment ˎ
chart) so that it appears at the center of the screen at the
telephoto end. Arrange it so that no nearby object (no
object closer to the camera than the chart) enters the
screen at the wide-angle end.
Adjusting the flange focal length on the lens
supplied with the PXW-X400KC
1
Place a subject (Siemens star chart, for
example) 3 m (10 ft) in front of the camera.
2
Open the iris.
The depth-of-field is reduced when the iris is
open, making adjustment easier.
3
Set the lens zoom to T (telephoto).
4
Adjust the focus on the subject.
5
Set the lens zoom to W (wide angle).
6
Loosen the F.B. lock screw on the lens, and
turn the F.B. adjustment ring to adjust the
focus.
7
3
Repeat steps
achieved at both ends of the zoom ring.
8
When the optimum position of the F.B.
adjustment ring is achieved, tighten the F.B.
lock screw.
Adjusting the flange focal length on the lens
Approx. 3 m (10 ft.)
supplied with the PXW-X400KF
With an auto focus lens, zoom and focus
operations automatically adjust the flange focal
length.
1
Place the supplied focal length adjustment
chart about 3m (10 ft) in front of the camera.
2
Open the iris.
The depth-of-field is reduced when the iris is
open, making adjustment easier.
3
Set the ZOOM switch to SERVO (power zoom
mode).
4
Hold down the flange focal length adjustment
button for 3 seconds.
The following message appears on the
viewfinder screen.
Auto FB Adjust
Executing...
After successful adjustment, the message on
the viewfinder screen changes to the following.
Auto FB Adjust
OK
If the flange focal length adjustment is not
successful
Check the subject and lighting conditions, and
repeat the adjustment.
6
to until the proper focus is