There is a slide switch on the back of the camera, near the top right corner of the LCD screen.
You apparently have it setting on the icon that looks like a triangle. Slide it up to the icon that looks like a camera.
I borrowed a friends Canon A75 to take some pictures but the problem is that it doenst go to the camera mode: It always stays at the preview mode. This happens even when the knob is placed at the 'Camera' mode and not the 'Preview' mode. Any idea why it is such ?
I think the camera is some one year old.