Main features, Built-in motor drive – Canon T 90 User Manual
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Main Features
1. BUILT-IN MOTOR DRIVE
A high film winding speed requires a high power-
source voltage, which in the past has meant a lot
Df batteries. Unfortunately a lot of batteries make
a camera heavy and very inconvenient to carry.
The “realization of both low voltage and high film
winding speed" has therefore long been a
jream of camera makers. But Canon challenged
he inconsistency of a low voltage (i.e., a few bat-
eries), high film winding speed camera, and
:ame up with the *3-motor system of the T90.
This camera has a built-in motor drive capable
)f a maximum of 4.5 frames/sec, using only 4
;ize-AA batteries.
There are three possible film winding speeds;
,HIGH (4.5 f.p.s.), LOW (2 f.p.s.), and SINGLE,
‘ilso, the automatic film winding speed change-
ver function will change the film winding speed
om HIGH to LOW mode when battery power
rops below a prescribed voltage, so more pic-
res can be taken with the same batteries.
* There are three motors, for mechanism
charge, film transport system and film
rewind, respectively, inside the camera.
Each motor is designed to best serve its
specific function, and the overall efficien
cy of carnera operation has thus been im
proved.
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