Calculating The Display Magnification For Microscopic Observation - Nikon DS-L4 Instructions Manual

7.3

Calculating the Display Magnification for Microscopic Observation

Pixel sizes of image pickup device on microscope cameras
The table below shows the pixel size (the maximum number of pixels stored) of image pickup device and the
effective area (area for the effective number of pixels stored) of each camera.
Camera
DS-Fi3
Use the following formula for calculating the magnification of the subject on the display panel.
 Magnification on the display panel
Optical magnification (objective lens magnification x relay lens magnification) x
=
*1: The dot pitch of the LCD panel of the DS-L4 is 0.1128 mm/pixel. In normal cases (if no external display is connected),
the number of vertical pixels is 1,180. Therefore, the height of the display area is 0.1128 x 1,180 = 133.1 mm. If an
external display is connected, the number of vertical pixels is 1,060. Therefore, the height of the display area is
0.1128 x 1,060 = 119.6 mm.
Camera
DS-Fi3
Chapter 7
Tips on Photographing
Pixel size (m) Recorded pixel count
Width Height Width
2.4 2.4 2880
height of display
Height of effective area for image pickup device
Magnification of
optical device Magnification of the subject on the DS-L4 display panel
(example)
In normal cases:
Objective: 40x
40 x 0.55 x 133.1 mm / 4.92 mm
Relay lens: 0.55x
If an external display is connected:
(Electronic zoom: 1x)
40 x 0.55 x 119.6 mm / 4.92 mm
Height Width
2048 6.91
*1
= approximately 600
= approximately 530
50
Effective area (mm)
Height Diagonal
4.92 8.48