Canon Command Back 70/80/90 Posted 9-14-03 This camera manual library is for reference and historical purposes, all rights reserved. This page is copyright © by mike@butkus.org M. Butkus, NJ. This page may not be sold or distributed without the expressed permission of the producer I have no connection with any camera company On-line camera manual library This is the full text and images from the manual. This may take 3 full minutes for all images to appear. If they do not all appear.
www.orphancameras.com Designed exclusively for the Canon T70, T80 and T90 respectively, the Canon Command Back 70, Command Back 80 and Command Back 90 are special data backs which open up an amazing variety of automatic operations. As their names indicate, the Command Backs are equipped with command functions to control the camera in various timer modes, as well functions which allow you to record certain types of data automatically on the film. Features: 1.
Table of of Contents 1. Nomenclature P. 3 2. Basic Functions of Control Buttons ..P. 4 3. Function Displays P. 6 9. Setting Each Mode of the Timer Control Function P.22 4. Attaching the Command Back to the Camera P. 7 (1) Setting the Self-timer P.22 (2) Setting the Interval Timer P.24 5. Setting the Film Speed P. 8 (3) Setting the Long Release Timer P.26 · Command Back 70 and 80 (4) Setting the Frame Counter P.28 · Command Back 90 (5) Multiple Exposures: for the Command Back 90 only P.30 6.
www.orphancameras.com 2. Basic Functions of Control Buttons The basic functions of the Command Back's various control buttons are as follows: 1. Mode Selector--Selects the modes in either the data recording function or the timer control function. www.4.butkus.org 2. Position Selector--Selects the digit to be set or reset when changing numbers in the various modes. 3. Number Set Button--Sets the desired numbers. 4.
3. Function Displays - 4.
www.orphancameras.com Be sure that there is no film in the camera before attaching the Command Back. Other wise, the film will be exposed when the regular camera back is opened. 1) Open the back cover of the camera and push the hinge release pin down to remove the back cover. 2) To attach the Command Back, insert its lower hinge into the lower socket first. Then depress the hinge release pin, align it with the upper socket and let go of the hinge release pin to lock it on.
It is unnecessary to set the film speed on the Command Back 90, since the DX data of the film is automatically transmitted from the T90. The light intensity is varied automatically according to the film speed. Notes: · The film speed is not displayed on the LCD panel. www.4.butkus.org · To compensate the light intensity of data recording, press the exposure level adjust button. Every time this button is pressed, the data recording exposure becomes one step brighter up to three steps.
www.orphancameras.com 1. Switching between the data recording function and timer control function Operation is switched between the data recording function and the timer control function each time the data/timer selector is pressed. You can confirm which function the camera is in by looking at the " " " mark on the LCD panel. 2. Mode Setting in Data Recording Function The mode display of the data recording function changes each time the mode selector is pressed.
Month and Day -> 1 Hour -> 0 Minute, Second, and other numerals -> 00 Command Back 90 Year -> '85 Month and Day -> 1 Hour -> 0 Minute, Second, and other numerals -> 00 8. Setting Each Mode of the Data Recording Function 1. The data are automatically recorded upon shutter release. 2. The data are recorded in the lower right hand corner of the picture. 3. If the data have been recorded correctly, a " " mark will appear in the upper right hand corner of the LCD panel and light up for about 1.5 - 2 sees.
www.orphancameras.com Any of three formats (year/month/day, day/month/ year, and month/day/year) may be selected in the date mode. The year/month/day display is initially set. If you want to change that order, follow these steps: 3. While pressing the number set button, press the mode selector. Each time the mode selector is pressed, the display rotates in the sequence: year/ month/ day, day/month/year, and month/day/ . year. Select one of those three displays. www.4.butkus.
3. When the position selector is pressed,'85 (year) will start flashing. 4. Press the number set button while '85 is flashing until '88 appears. 5. Correct 1 (month) to 5 and then 3 (day) to 11 following the same procedures as in steps 3 and 4. 6. Press the position selector once more to stop the flashing. (2) Setting the time To set the precise time, for example, to 12:00 noon, 00 seconds, follow these steps: 1. Select the data recording function by pressing the data/timer selector. 2.
www.orphancameras.com 3. When the position selector is pressed once, the colon will start flashing. When it is pressed again, 30 (minute) will start flashing. 4. Press the number set button while 30 is flashing until 45 appears. 5. Correct 10 (hour) to 17 following the same procedures as in steps 3 and 4. 6. Press the position selector once again to stop the flashing. (3) Setting the Arbitrary 6 digit Code.
3. When the position selector is pressed once, the "00" on the right will start flashing. 4. Press the number set button while the "00" is flashing until 34 appears. 5. Correct the 00 in the middle to 12 and then the 00 on the left to b following the same procedures as in steps 3 and 4. 6. Press the position selector once again to stop the flashing. (4) Setting the 4-digit Frame Counter Number You can record the frame counter number from Fc 00 01 up to Fc 99 99 on the film in sequence. EXAMPLE 1.
www.orphancameras.com 4. Press the number set button once while the 00 is flashing to set 01. 5. Press and release the position selector twice to stop the flashing. The frame counter reading automatically advances with the frame counter of the camera, as each exposure is made. Notes: · If you want to start the frame counter reading from Fc 00 01 again on the second roll of your film, reset to Fc 00 01 again.
4. To set the timer control function with the Command Back 90, set the T90 for continuous shooting. 5. Do not set the self-timer on the camera itself when the timer control function is used. 6. Be sure to check that "OFF" is set in the data recording function if you do not want to record any data. 7. If you want to take a picture manually during timer control function operation, it is possible to shoot by pressing the camera's shutter button.
www.orphancameras.com (2) Setting the Interval Timer The interval timer can be set in 1-sec. units to any value from 1 sec. to 23 hrs., 59 mine., 59 sees. EXAMPLE When you want to release the shutter every 5 mine., 30 sees. 1. Select the timer control function by pressing the data/timer selector. 2. Select the interval timer mode by pressing and releasing the mode selector. 3. When the position selector is pressed, the 00 on the right will start flashing. 4.
When you want to keep the shutter open for 4 hrs., and 15 min. 1. Set the camera to "bulb." 2. Select the timer control function by pressing the data/timer selector. 3. Select the long release timer mode by pressing and releasing the mode selector. 4. When the position selector is pressed twice, the 00 in the middle will start flashing. (The 00 on the right should remain the same.) 5. Press the number set button while the 00 is flashing until 15 appears 6.
www.orphancameras.com 5. Press the position selector once again to stop the flashing. 6. To start taking pictures, press the start/stop/ clear button once. After the camera has finished taking the twelve pictures, operation will automatically stop. Note: If the frame counter of the Command Back is set to 00, shooting is impossible even when the start/ stop/clear button is pressed.
combinations in 3). This is excluding the case of the OFF mode and regarding all three displays of the date mode as one mode. In the case of the Command Back 80, however, there are 4 possible combinations in 1), 12 combinations in 2) and 16 complex combinations in 3). This is because the long release timer mode can not be used when AC lenses are mounted on the T80. Refer to the table below on the type of exposure made with each combination.
www.orphancameras.com 2. When the timer control function is combined with the data recording function, the LCD panel display will appear as follows: 1) The LCD panel automatically switches to the data recording function display as soon as the start/stop/ clear button is pressed. The mode which will be recorded is displayed. The timer control function is indicated by the "***" mark pointing to the mode in operation.
EXAMPLE 1 When you want to use the interval timer mode set at 4 hrs., 15 mine., and the long release timer mode set at 10 sees. 1. Set the camera to "bulb." 2. Select the timer control function by pressing the data/timer selector. 3. Select the interval timer mode and set it to 04:15 00. 4. Select the long release timer mode and set it to 00:00 10 5. Press the start/stop/clear button to start operation. www.4.butkus.org EXAMPLE 2 When you want to use the self-timer mode set at a delay of 45 mine.
www.orphancameras.com 1. Set the camera to "bulb." 2. Select the data recording function by pressing the data/timer selector. 3. Select the 4-digit frame counter mode and set it to Fc 00 01. 4. Select the timer control function by pressing the data/timer selector. 5. Select the self-timer mode and set it to 00:45 00. 6.
7. Select the long release timer mode and set it to 00:00 20 8. Select the frame counter setting mode and set it to 07 9. Press the start/stop/clear button to start operation. Note: Be sure the camera is set to BULB. 11. Replacing the Battery When the " " mark appears to the right of "BATTERY" on the Command Back 70 or 80, the battery has become exhausted. With the Command Back 90, the " " mark will appear to the right of the " " mark. At this time, replace the battery promptly as instructed below.
www.orphancameras.com 3) Insert the tip of the screwdriver into the chamber and then push the battery to the left. The battery will pop up (illus. A). 4) Wait for at least 15 seconds after removing the old battery and then load the new battery with the " + " side facing up as indicated on the outside of the battery chamber cover (illus. B). 5) To load the new battery, first insert one side into the chamber and then press it to the left with your finger until it will go no further (illus. C).
e) OFF (non-recording) 2) External display of data: Using a 7-segment, 6-digit LCD display that shows what is recorded on the film. (OFF is displayed on the monitor panel only.) 3) Position and size of data: Recorded in the bottom right corner of horizontal frame and is horizontally arrayed. Character height on negative is approx. 0.7 mm. www.4.butkus.org 4) Recording system: Projected onto the film through a transmissive type LCD.
www.orphancameras.com Timer control and data recording functions in combination: Can be used in combination. Data set prior to the selection of the timer mode is coupled to exposure and is automatically recorded on the film. Display of exposure data on the monitor display panel is resumed when timer control function operation begins.
