Nd Filters Of The Epi-Fl Attachment - Nikon ECLIPSE 50i Instructions Manual

ND filters of the Epi-fl attachment

3.16.7
Push in the ND filter attach/detach lever to move
ND filters into the optical path and darken the
fluorescent image.
ND filters are used to adjust light intensity. Higher
filter numbers correspond to lower transmission
rates (i.e., darker images). ND filters do not affect
color balance.
ND4: Reduces light intensity to 1/4.
ND8: Reduces light intensity to 1/8.
ND16: Reduces light intensity to 1/16.
As shown below, you can combine these three
filters to achieve various levels of brightness.
Brightness
1
1/4
1/8
1/16
1/32
1/64
1/128
1/512
Chapter 3 Individual Operations
3.16 Fluorescence Observation
ND4 ND8
- -
-
○
-
○
- -
○ ○
-
○
- ○
○ ○
(-: Outside optical path, ○: In optical path)
53
ND filter attach/detach lever
ND16
-
-
-
○
-
○
○
○
3