91
Viewed with a 10x eyepiece, this intermediate
image of 0.1x gives a total magnification of 1x in
the microscope eyepiece (0.1 x 10 = 1x).
The total magnification of the film plane of a
camera is derived from multiplying the inter-
mediate image magnification M1 by the
magnifications of the photo eyepiece and
camera attachment, e.g.:
intermediate image magnification 0.1x
photo projection lens 10x
camera factor 35 mm 0.32x
0.1 x10x1.32= 0.32x
The total magnification at the 35 mm camera of
the ORTHOMAT® E is therefore 0.32x.
Fig.␣74␣
Slide overlay on the FSA 25 PE tube (with tube adapter)
1 Tube flange, 2 Coupling ring of reflection optics, 3 Reflection
optics, 4 Coupling ring of slide overlay device, 5 Knurled
focusing ring, 6 5 x 5 cm slide holder, 7 Filter slot, 8 Illumina-
tion adapter of lamphousing Fig.␣75␣ ␣ Transformer
1 3 8
2 4 6
7
5
The total magnification in the microscope, the
reproduction ratio on the photograph or TV
image can be quickly and easily measured with
a scale and calculated.
n.b.: For normal viewing without the macro
mirrorhousing or macrodual zoom, put on the
cover to avoid disturbing overlay effects.
The mirror housing (73.11) can be rotated
through 360°, for example to alter the angle at
which the photograph is taken. This is done by
loosening the Allen screw.
The intermediate image magnification M1 of the
macro object can be worked out from the
eyepiece field of view and the diameter of the
object field (measured with a graduated ruler)
as follows:
M1 = field of view Ø z.B. 10x/20 eyepiece
M1 = –––––––––––– e. g. –––––––––––––––––– M = 0.1
M1 = object field Ø M1 = object field = 200 mm