Zeiss 35 mm SLR Camera, Руководство по эксплуатации

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OPERATION Photomicrography with
Carl Zeiss Selection of color temperature/film 35 mm SLR cameras
3-4 B 40-046 e 03/99
3.2.2 Setting the Color Temperature to 3200 K and Setting the Image Brightness
When using color reversal films for artificial light (3200 K), it is recommended to set the illuminator to
the color temperature 3200 K (approx. maximum lamp voltage in the case of halogen lamps). Image
brightness is very high. In brightfield and with high film speeds in particular, the resulting exposure times
are very short, and are therefore beyond the range permitting unblurred exposures. The image
brightness must be attenuated by using color-neutral gray filters.
☞ also see section 3.2.8,1, avoiding blur.
3.2.3 Selecting the Film
In photomicrography, reversal films (slide films) are used for color exposures. In general, reversal films for
artificial light (3200 K) are recommended. If daylight film is used, a conversion filter 3200 - 5500 K is
required.
Conversion filter 3200 - 5500 K d = 32 mm
467847-0000-000
d = 25 mm
447825-000-000
d = 18 mm
467854-0000-000
Films labeled Professional feature closer tolerances for speed and color balance, i.e. exposure and color
are more homogenous.
DX -coded films should always be used in their original cartridge.
Use of bulk film ;
We would not recommend the use of bulk film because light leak and scratches or dirt on the film may
lead to complications or problems with film advance if the cartridges are damaged.
If you want to use bulk film nevertheless, please note the following:
☞
Only use film cartridges conforming to DIN 4335 or ISO 1007-1977. Ensure that the maximum
dimensions given in these standards are not exceeded.
Film cartridges are not suitable for continuous operation! They must be scrapped after approx.
10 refills.