Adjusting The Lens - Ikegami UHL-43 Operation Manual

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Auto Setup Function List
ontro tem
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Reference
- INT (internal reference) REF is the factory setting value by software.
- EXT (external reference) REF is the value set by the reference set function.
- The items for the G channel with a black square only works when it is set with a diascope (lens option). When you use an external
chart, set the G manually.

4.4 Adjusting the Lens

Adjusting the Lens Flange Back (Back
Focus)
Broadcast lenses are designed to maintain focus throughout
the zoom range when the distance from the lens to the subject
does not change. The Flange Back (Back Focus) adjustment
on the lens is used to optimize this function. Once the lens
until the lens is replaced with another one.
An example of adjustment method is shown below.
1
Set the IRIS mode switch of zoom lens to "M"
(manual).
2
Open the Iris fully.
The depth-of-focus becomes narrow and most critical
with the iris fully open. Adjust the Flange Back
under this condition.
Note
- Lock at the MONITOR output screen and shoot a subject
white). A subject with detailed patterns is easier to adjust
the focus.
uto Setu
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- If a subject is too bright and saturated, employ the shutter
- Siemens star chart is recommended for a subject. The
center part has detailed patterns, so it is easy to adjust the
focus. (Refer to the next page.)
3
Shoot a subject about 5 m away.
4
Press the zoom rocker switch for a tight shot
of the subject, and optimize the focus using
the standard lens focus ring.
5
Press the zoom rocker switch for a wide shot
of the subject. Do not readjust the lens focus
ring.
6
Loosen the flange back lock, and turn it to
adjust the focus.
7
Repeat the procedures 4 - 6, and tighten the
flange back lock with "T" and "W" both in
focus.
UHL-43 2005 VER1 (E)
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4 Operation
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