50

1

2

3

1 0 1 5 f

OPERATIONS ADVANCED

22 16

8 4

4 8

16 22

A 22 16 11 8 5.6

Using the Bulb Exposure Mode

Purpose

This mode is useful for the long exposures required for shooting night scenes and fireworks. The shutter remains open as long as the shutter release button is held down.

How to

1.Set the lens aperture ring to the desired f-stop other than [ A ] while holding down the aper- ture-A lock button.

•Do not set the lens aperture ring to [ A ]. If doing so, the aperture will always closed to the maxi- mum position.

2.Set the shutter speed dial to [ B ].

3.An appropriate aperture will be displayed in the viewfinder when the shutter release but- ton is depressed halfway.

•Set the shutter speed dial to the [ B ] position. Turn the shutter speed dial while holding down the shutter speed dial lock button.

•The approximate aperture indication appears in the viewfinder. It may not the same indication as you select the lens aperture ring especially when the A645 150mm f/3.5 or A 645 45-85mm Zoom f/4.5 is attached.