Lens; Lens Selection - Hitachi HV-D30 Operation Manual

Lens

CAUTION:
Observe the dimensions
mounting selection as illustrated at the
left.
If the dimensions are not observed, do not
use such a lens, because the lens and the
camera will be damaged.

Lens selection

1) Optical characteristics
The proper lens is vital for obtaining full performance from the camera. The exit pupil
distance is particularly important for a 3 CCD type camera. If too short, vertical color
shading can appear in the picture.
Also, as the lens iris approaches fully open, problems such as loss of resolution, shading
and flare (overall image "white-out") can detract from picture quality. When using in
applications that call for open iris, the lenses for 3 CCD are recommended. If another
lens is contemplated, check the performance beforehand.
2) Auto iris lens
Main types are Video (with self contained iris amplifier) and DC (DC voltage applied to
open lens iris) and manual over-ride (e.g., Cosmicar). Lenses without self-contained
iris amplifier are not compatible.
Camera settings differ according to the auto iris lens type (see page 20).
Note: The HV-D30 uses lens connector wiring prescribed by the EIAJ (Electronic Industries
Association of Japan). Refer to page 47
6
of the lens
Flang surface of lens
4.3mm or less