Canon CN-E15.5-47mm T2.8 L SSP - Manual (Page 20)

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Names of Parts
Focus drive gear
Number of teeth: 133
Module: 0.8 metric module
P.C.D.: 106.4 mm
Angular rotation: 300°
Zoom drive gear
Number of teeth: 111
Module: 0.8 metric module
P.C.D.: 88.8 mm
Angular rotation: 93.5°
Iris drive gear
Number of teeth: 111
Module: 0.8 metric module
P.C.D.: 88.8 mm
Angular rotation: 55°
Lens holder
Attachment holder
F.B. adjuster
cover
EF mount (S type)
Zoom/focus levers PL mount (SP type)