User manual CANON A1

[. . . ] Not For Resale ­ Free Download at http://www. joe-chan. com/manuals Not For Resale ­ Free Download at http://www. joe-chan. com/manuals INTRODUCTION Congratulations!You are now the owner of the most exciting and advanced camera on the market. Canon has good reason to have unbounded confidence and pride in the A-1. Embodied in this camera are the qualities of the finest SLR cameras and into it went the most sophisticated electronics technology available in the world today. [. . . ] Accordingly, in rapidly varying light conditions, the changes in aperture or shutter speed will be indicated slightly behind time. This is a concession to the adjustment limitations of the human eye which in no way affects exposure timing. Cancelling the Viewfinder Display With the A-1, you have the option of turning off the viewfinder display altogether. This can be done simply by turning the viewfinder display lever to the white dot. Metering is taking place and the shutter can be released for a correctly exposed image even when the display is switched off, but it saves battery power and gives you absolute freedom to focus and compose the image undisturbed. ­53­ Not For Resale ­ Free Download at http://www. joe-chan. com/manuals Numerals and Characters Composing Digital Readout in Viewfinder Up to the first four digits from the left in the digital readout show shutter speed data ranging from 1/1000 sec. and faster will be displayed as a whole number as they are on the AT dial so that an indicated shutter speed of 500 in the digital readout stands for a shutter speed of 1/500 sec. and slower will be displayed as a whole number followed by a second mark ( ") so that an indicated shutter speed of 8 " in the digital readout stands for a real shutter speed of 8 sec. When you are in 4 sec. W 1/4 sec. W The next two digits following the first four from the left for shutter speed data are reserved for aperture data. The possible apertures to be displayed in the digital readout range from f/1. 2 to f/32 even though the minimum aperture it is possible to set on the AT dial is only f/22. The aperture data in the digital readout is displayed in 1/2 f/stop increments, giving numerical values standing for the dots on the aperture scale of the AT dial. An indicated aperture of 9. 5, for instance, in the viewfinder stands for the dot between f/8 and f/11 on the AT dial aperture scale. These half f/stops are approximations which are not always exactly halfway between the full f/stops. f/9. 5W Although both shutter speed and aperture are indicated in the viewfinder in each 1/2 step increment, they are actually controlled by the camera steplessly for greatest possible precision. There are other possible displays, including M, buLb, F, bu F, and a flashing EEEE EE. "F" or "bu F" supplements or replaces the shutter speed data in the digital readout when the camera ­54­ aperture priority AE and the camera is calculating the shutter speed, it is possible for intermediate shutter speeds that are not on the AT dial to show up in the viewfinder. In this case, you may see such shutter speeds as 750 (1/750 sec. ) or 0" 7 (0. 7 sec. ) displayed in the viewfinder. 1/750 sec. W 0. 7 sec. W Not For Resale ­ Free Download at http://www. joe-chan. com/manuals is set for flash photography while "buLb" replaces the shutter speed data when the AT dial shutter speed scale is set to "B". The flashing "EEEE EE" appears to warn of error in the stopping-down process and will be explained in more detail later in this instruction booklet. When switching from one priority to another under the same exposure conditions, it is possible that the new camera-selected variable will differ a half step from the corresponding previously manually-selected value. This is due to the fact that the camera-selected value is rounded off to half steps in the display. However, since the camera actually controls its variable steplessly, this seeming discrepancy will have no effect upon exposure. Incorrect Exposure Warnings The types of incorrect exposure warnings depend on what AE mode you are using. In shutter priority AE mode When exposure is incorrect, the LED digital readout for aperture flashes on and off. [. . . ] Stoppingdown an FD lens is possible only when aperture ring is disengaged from "A" mark. Manual Override: Possible by disengaging FD lens from "A" mark and setting AE mode selector to Tv. Aperture manually controlled with aperture ring, shutter speed with AT dial. Shutter Speed Scale: B, 30, 15, 8, 4, 2, 1, 2, 4, 8, 15, 30, 60, 125, 250, 500, 1000 plus P (with the AE mode selector at Tv). [. . . ]