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FilmSensiLab - M&P Workshop Film Sensitometry/Plotting Name...

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M&P Workshop Film Sensitometry/Plotting ( p 96-103, 108-115) Name Nicole Formisano Section 4 Lab Partners Dina Yang Objective To plot a family of D-Log curve for black-and-white negative films exposed in a sensitometer and developed for different times. Required 1. Calculator Part I - Determine the maximum Log H Use the following procedure to determine the maximum log exposure received by the film in the sensitometer. The information for #1, 2, 5and 7 can be found on the data sheet provided on Page 2 1. Illuminance at the film plane of the sensitometer with nothing in the light path ____ 1700 _____ lux 2. Exposure time ____0.2 ____ second 3. Exposure (H) note (E x T = H) ______ 340 _____ lux-sec 4. Log exposure (log H) (Convert lux-seconds to log) _______ 2.53 ___ log (lux-sec) 5. Density of the ND filtration ____2.0_ N.D. filter 6. Log exposure (log H) at the step tablet (Subtract the density of the ND filter from log H) ____.53_ __ log (lux-sec) 7. Step tablet minimum density (at step 21) ___0.10____ 8. Maximum log exposure at the film plane (Subtract minimum density of step 21 from log H) ______.43__ log (lux-sec) 1 of 6
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