Individual Operations; Adjusting The Brightness Of A Diascopic Image; Adjustment With The Dia-Illumination Brightness Control Knob; Adjustment With Nd Filters - Nikon Eclipse Ci-E Instruction Manual

2

Individual Operations

1

Adjusting the Brightness of a Diascopic Image

The brightness of a diascopic image can be adjusted by turning the dia-illumination brightness control knob or by
removing/inserting ND filters from or into the optical path.
1.1

Adjustment with the Dia-illumination Brightness Control Knob

Turning the dia-illumination brightness control knob to change the
brightness of an LED allows you to adjust the brightness of a
diascopic image. The brightness control knob can be used with
click-less operability.
The brightness control knob can be turned without limit, but the
brightness of the dia-illumination LED can only be adjusted within
the set range. The brightness can be adjusted from minimum to
maximum with approximately two rotations of the control knob.
Brightness Control Knob Rotation and Brightness of the
Brightness control knob
Clockwise rotation
Counterclockwise rotation

Adjustment with ND Filters

1.2
ND filters are used to adjust light intensity. Higher filter numbers
correspond to lower transmittance (i.e., darker images). The color
balance of the image will not change.
You can adjust the brightness of a diascopic image by adding an
ND filter, either by placing the ND filter over the field lens, or by
setting the ND filter in the filter cassette holder mounted on the
field lens part.
The filter cassette holder can house up to three φ45 mm filters
with a thickness of up to 3 mm. Pushing in the filter IN/OUT lever
inserts the ND filters into the optical path. In addition, one filter
can be placed on the filter cassette holder.
The filter cassette holder cannot be used with a simple polarizer,
polarizer unit for first-order red compensation, or the spacer for
the nosepiece.
Image
Image brightness
Brighter
Darker
Darker
Dia-illumination brightness
control knob
Brightness control of dia-illumination
0.9
0.8
0.5
0.4
0.3 0.2
0.1
Filter
IN/OUT lever
Adjusting the brightness with ND filters
39
0. 1
0. 2
0. 5
0.6
0.7
0.9 0.8
Brighter
PO WER
Filter cassette
holder
Chap. 2