Notch code

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A notch code is a set of notches or recesses cut into the edge of a piece of sheet film to provide a tactile way to identify the film brand, type, and processing chemistry (e.g. black and white, color negative, or color reversal) in the dark. It enables photographers to identify the emulsion side of the film when loading sheet film holders, and helps processing lab technicians avoid placing sheets in the wrong processor. After processing the notches serve as a permanent visual record of the same information. When the film is oriented vertically (portrait format), the notches are in the top edge near the upper right corner when the emulsion faces the viewer.

Code notches and ISO speeds for Kodak sheet films[edit]

Type Code Daylight ISO Tungsten ISO
Commercial 6127, 4127
__________  __    _____
          \/  |__|
20/14 8/10
Contrast Process Pan 4155
______  _  ___  _  ____
      \/ \/   \/ \/
100/21 80/20
Contrast Process Ortho 4154
______  _  ___    _____
      \/ \/   |__|
100/21 50/18
Ektapan 4162
____________  _     ___
            \/ |___|
100/22 100/22
Fine Grain Positive 7302
_______________     ___
               |___|
40/17 10/11
Kodalith Ortho 2556, Type 3 Unnotched 10/15 6/9
Kodalith Pan 2568
_______  _  ___  _____
       \/ \/   \/
40/17 36/16
Plus-X Pan Professional 4147
____  _  _  ___     __
    \/ \/ \/   |___|
125/22 125/22
Tri-X Pan Professional 4164
_________  _  _  _____
         \/ \/ \/
320/26 320/26
Tri-X 320 (TXP)
_______      _    ___
       \/\/\/ |__|
320/26 320/26
Super-XX Pan 4142
____________  _  _____
            \/ \/
200/24 200/24
Tri-X Ortho 4163
__  _  ____    _    __
  \/ \/    \__/ \__/
320/26 200/24
Royal-X Pan 4166
___  _  _  ___     ___
   \/ \/ \/   |___|
1250/32 1250/32
Royal Pan 4141
____________  ___  ___
            \/   \/
400/27 400/27
T-Max 100 Professional 5052
_____  ________  _____
     \/        \/
100/21 100/21
T-Max 100 (100TMX)
_________        ____
         \/\/\/\/
100/21 100/21
T-Max 400 Professional 5053
_______  _  _     ____
       \/ \/ |___|
400/27 400/27
T-Max 400 (400TMY)
_________    _    ___
         \/\/ |__|
400/27 400/27
Professional Copy 4125
__  ____  _    _    __
  \/    \/ \__/ \__/
25/15 12/12
Pan Masking Film 4570
__  __________  __  __
  \/          \/  \/
Matrix Film 4150
_  _  _    ____    ___
 \/ \/ \__/    \__/
Pan Matrix 4149
__  ____  ____  ______
  \/    \/    \/
Separation Negative 4131, Type 1
____  _    _    ______
    \/ \__/ \__/
Separation Negative 4133, Type 2
_______    __    _____
       \__/  \__/
High Speed Infrared 4143
____  __  __  __     ___
    \/  \/  \/  |___|
Ektachrome 64 Professional 6117
___________      _  __
           ╰----╯ \/
64/19 16/13 (with 80A)
Ektachrome 100 Professional 6122
_____  _      _  _  __
     \/ ╰----╯ \/ \/
100/21 25/15 (with 80A)
Ektachrome 100 Plus Professional 6105
________      _  _  __
        ╰----╯ \/ \/
100/21 25/15 (with 80A)
Ektachrome 200 Professional 6176
__  _  _      _  _  __
  \/ \/ ╰----╯ \/ \/
200/24 50/18 (with 80A)
Ektachrome 64T Professional 6118
________  _      _  __
        \/ ╰----╯ \/
40/17 (with 85B) 64/19
Ektachrome Duplicating 6121
_____  _  _      _  __
     \/ \/ ╰----╯ \/

Code notches and ISO speeds for Ilford sheet films[edit]

Type Code Daylight ISO Tungsten ISO
Ortho Plus
_______________  _____
               ╰╯
80/20 40/17
FP4 Plus (New)
__   ___  ______   ___ 
  ╰-╯ ╰╯     ╰-╯
125/22
FP4 Plus (Old)
________  _______  ___
        ╰╯     ╰╯
125/22
HP5 Plus (New)
__   ______  ___   ___
  ╰-╯    ╰╯  ╰-╯
400/27
HP5 Plus (Old)
___  ___  _______  ___
   ╰╯ ╰╯      ╰╯
400/27
Delta 100 Professional
_   __  _  ___   _____
 ╰-╯╰╯╰╯  ╰-╯
100/21
Delta 400 Professional (New)
_   ____  _  _   _____
 ╰-╯  ╰╯╰╯╰-╯
400/27
Delta 400 Professional (Old)
__________  _  __  ___
          ╰╯╰╯╰╯
400/27
XP2 Super (New)
_   __  _  _  __   ___
 ╰-╯╰╯╰╯╰╯╰-╯
400/27
XP2 Super (Old)
____  _  __  _  ______
    ╰╯╰╯╰╯╰╯
400/27

Code notches and ISO speeds for Fuji sheet films[edit]

Type Code Daylight ISO Tungsten ISO
Fujichrome Velvia
__________    ________
         ╰---╯           
50/18 16/13
Fujichrome Velvia 100
_  ______     ________
 ╰╯    ╰---╯
100/21 32/16
Fujichrome Velvia 100F
__  __  __    ________
  ╰╯╰╯╰---╯     
100/21 32/16
Fujichrome Astia 100F
_  _  ____    ________
╰╯╰╯  ╰---╯     
100/21 32/16
Fujichrome Provia 100F
_______  _     _  ____
      ╰╯╰---╯╰╯
100/21 32/16
Fujichrome T64
_______  _     _  __ _
      ╰╯╰---╯╰╯╰╯
64/19 32/16
Fujicolor Pro 160S
________       ___  __
        \_____/   ╰╯
                     O
160/23 50/18
Fujicolor Pro 160C
__  _____      _______
  ╰╯   \_____/
                     O
160/23 50/18
Fujicolor NPL 160
__  _  __      ___  __
 ╰╯╰╯ \____/   ╰╯ 
                     0
100/21 160/23
Fujichrome Duplicating Film CDU Type II
__________    ____  __
         ╰---╯  ╰╯     
Fujicolor Internegative Film
__________      _   ___
          \____/ ╰-╯ 
                      0

Historic Notch Codes[edit]

An extensive listing of sheet film notch codes, mainly Kodak, including many discontinued types, can be found at the end of the University of Louisville Ekstrom Library's Acetate Negative Survey [1].

Sources[edit]