13S 



HANDBOOK OF PHOTOGRAPHY 



indicated in Fig. 11. Each manufacturer uses a different notching code, so the user 

 must take care not to confuse them. 



SUPERSENSITIVE PLENACHROME PORTRAIT- NITRATE 

 S^ V 



X-F PANCHROMATIC-NITRATE 

 fNON-HALATION BACK) 



Wl 



COMMERCIAL ORTHOC HROM ATIC 



w^^ 



SUPER PLENACHROME PRESS 



v^v-wi 



SUPERPAN PORTRAIT 



PORTRAIT-SAFETY 



wv 



P0RTRA1T-H6S 



HIGHLY GREEN SENSITIVE . 



(MADE IN SAFETY BASEONLYj 



-^ 



SUPERSENSITIVE PANCHROMATIC 



urui 



UUVJl 



COMMERCIAL PANCHROMATIC 



i_n_n_n_ri 



SUPERPAN PRESS 



COMMERCIAL- 



(MADE IN SAFETY BASE ONLY) 

 (NON-HALATION BACK) 



V V 



PENTAGON , 



(MADE IN SAFETY BASE ONLY) 

 (NON-HALATION BACK) 



■V" 



"V^ 



COMMERCIAL 



FINE GRAIN PANCHROMATIC 

 (MADE IN SAFETY BASE ONLY) 

 (NON-HALATION BACK) 



V LTV 



LTU 



X-F PANCHROMATIC- SAFETY 

 (NON-HALATION BACK) 



V: LTU 



PROCESS 



(MADE IN SAFETY BASE ONLY) 

 (NON- HALATION; NON-ABRASION) 



V w 1 



PANCHROMATIC PROCESS 

 (MADE IN SAFETY BASE ONLY)^ 

 ( NON- HALATION; NON-ABRASION) 



s/ — i_rw 



X-FORTHOCHROMATIC 

 fMADE IN SAFETY BASE ONLY) 

 (NON- HALATION BACK) 



X-F ORTHO PRESS 



(MADE IN SAFETY BASE ONLY) 



(NON-HALATION BACK) 



^^r><^ 



(a) 



PORTRAIT- PAR SPEED 



— ^-n 



X-F PAN PRESS 

 (MADE IN SAFETY BASE ONLY) 

 (NON-HALATION BACK) 



"u 1 



■N/^ 



(b) 



SUPER ORTHO PRESS 



COMMERCIAL PAN 



PROCESS PAN 





KODACHROME PROFESSIONAL 

 FILM- DAYLIGHT TYPE 



FESSIONAL 

 TYPE 



KODACHROME PROFESSIONAL 

 FILM- TYPE B 



■v>^^^ 



Fig. 11. — Reference notches cut into cut film for purposes of identification. When 

 the emulsion side faces the photographer, the notches are in the top-right corner, (a) 

 Agfa Ansco film. (6) DuPont film, (c) Eastman film. 



Positive Materials. — The positive emulsions used for photographic prints differ 

 considerably among themselves but, in general, have much finer grain and are much 

 slower than the negative emulsions and have somewhat higher contrast. Positives 

 are made both on transparent supports for viewing by transmitted light, either directly 

 or by projection, and on opaque supports for viewing by reflection. The differences in 

 the optical conditions in these two cases so change the apparent properties that it is 

 necessary to consider them separately. 



Transparencies. — The principal positive materials which are viewed by transmitted 

 light are motion-picture positive films and lantern-slide plates, which are both nor- 

 mally used for projection of the image on a screen. 



