Films and Screens Review

Question 1

Increasing FILM speed causes?

Answer 1

more radiographic density per unit of exposure, therefore less mAs needed to create film density

faster films are not able to produce as much detail as slow films

Question 2

increasing SCREEN speed causes

Answer 2

more image density per unit exposure therefore less mAs needed

faster screens are not able to produce as much detail as slower screens

Question 3

Too much or too little density does what?

Answer 3

masks the true scale of contrast. when film density is suboptimal we are not able to determine wheather contrat is too high too low or perfect

Question 4

Fog may be caused by what?

Answer 4

-secondary raidiation
-accidental radiation exposure
-too much or not enough time temperature or titration
-darkroom chemical fumes
safelights for too long
light leaks in darkroom
excessive film age
too much high film storage temp or pressure