Canon T90 - Accessories

Accessories

While the T90 does not support the vast range of accessories available for Canon's F-1, F-1n or New F-1, a number of significant accessories are available. The pentaprism is not interchangeable, but the focusing screen is; eight different screens are available for different applications. Standard is the New Split/Microprism screen, which offers three of the most common focusing aids simultaneously; the central circle is a split image prism, surrounded by a microprism ring; the rest of the screen is a laser matte.

Two optional data backs are available for the T90. The first, the Command Back 90, both allows date and data imprinting on the photographs and also allowed various forms of time-lapse photography. The second, sold by Canon only in certain markets, is the Data Memory Back 90, which stores 16 shot variables for up to 156 exposures, or six variables for up to 338 exposures. The computer interface to the Data Memory Back 90 supports only the MSX home computer standard. Third parties have adapted connectors to other computer systems.

A wired 60T3 remote control unit plugs into a socket fitted beneath the right handgrip, while an infrared remote control kit is also available as the LC-2. This unit also supports an Auto Sensing mode for completely unmanned photography. This trips the shutter whenever something blocked the path between transmitter and receiver—useful in wildlife photography, for example.