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CHARACTERISTICS
Lucky black-and-white film professional 120 can be widely used in the field of professional photography. It has the following characters:
1. Be retouched. It can be retouched because there is a new kind of anti-halation layer on the back.
2. Rsisting adhesion. It is easier to be storied and trans-portted in high temperature and in high humidity because there are matting agent on the surface.
3. Wide exposure latitude.
4. Moderate contrast.
Characteristic Curve
Exposure: Daylight
Process: Lucky HB-12 or D-76
Densitomery: Visual diffusion density
Spectral: Equals to the reciproeal of the exposure(mj/m2) required to produce the given density |
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Contrast Index Curve:
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Process: Lucky HB-17 or D-76
Fixing: Fixer F-5 for 5 minutes in room temperature
Densitometry: Visual diffusion density
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Photographic properties
Speed |
ISO100/21°
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RMS granularity
Measurement aperture: 48μm
Net density: 1.0
Magnification: 12×
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9
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Resolving power
Test-Object Contrast: 1000:1
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160c/mm
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Safelight
Total darkness. Take care of the fluoreseent action, it would cause the film sensitized. Be sure no existing light when film is being handled.
Processing
This film is well compatible with regular black and white negative chemicals. Using Lucky HB-17 or D-76 developer, at temperature 20 ℃, developing for 5 minutes, stirring for 10 seconds and then stop stirring for on minute. Fixer F-5, for 5-10 minutes, a satisfactory result would be obtained. In special case or for special purpose, by extending or shortening the developing time, by raising or lowing the stirring strenght, an expected result can be obtained.
Storage
Should be stored in a dry, cool, shde, clean place. the recommended sotrage temperature is below 21℃, humilityis no highter than 65%R.H.
Points for Attention
The film stored at low temperature should be conditioned at room temperature (20℃) for 1 to 2 hours before opening the package for shooting in order to prevent condensation on film surface and degradation of the film; Load and unload the camera should be in subdued light, prevent from direct sunlight;
The photographic properties of film may be changed due to aging; therefore, the film should be used in DEV. BEFORE date. Exposed film loaded in camera in time. the exposed film should be processed as soon as possible.
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