Refer to the instructions provided with each photomicrographic equrpment for detailed procedure. This paragraph
is grven to explain the photomicrographic problems pertaining to the IMT-2.
0 Illumination
Accurate illumination is more important for photomicrography than
for observation since flawless pictures cannot be taken without it.
In order to avoid uneven illumination, especially with high contrast film,
adjust the illumination, following the observation procedure accuracy.
@ Radiant
Heat from the Light Source
Even optimum intensity of illumination light generates considerable
radiant heat for observation or photomicrography, especially in case
of Nomarski interference contrast. Living specimens are subject to
damage due to radiant heat. Therefore;
l
Reduce light intensity as much as possible.
l
Use additional heat filters.
l
For time-lapse photography, synchronize the light source to ex-
posure (synch. mode).
0 Filters and Lamp Voltage
Select the filter and bulb voltage according to the film
Daylrght type color film
45.LBD-2N 8V
Tungsten type color film
45-LBT 8V
B & W film
43-l F550-W45 6V and up
* To match your preference in color rendition, it is recommended to
make test exposure for the determination of optimum bulb voltage.
0 Focusing
\/
x - //\
Fig. 44
1) Looking through the finder eyepiece, adjust the diopter ring so
that the double cross lines can be clearly observed as two distinctly
separate lines. (Fig. 44)
2) Bring the specimen into focus, rotating the coarse and fine adjust-
ment knobs.
* Since the focusing reticle and the film plane are in precise align-
ment, the image focused through the focusing magnifier and the
image in the film plane are in focus at the same time. Therefore,
unless the adjustment just described is perfect, blurred pictures
will result.
* When using the multi-tube unit IMT-2-MTU is used, out of focus-
ing or framing may cause, since the optical path length is long.
* Please be sure to use the focusing magnifier @ built-in the
photographic attachment for focusing or framing.
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