Originally Posted by
DPReview
Continuous Shooting and Buffering
The SLT-A65 has three continuous shooting modes, 'Lo','Hi' and 'Continuous Advance Priority AE'. In continuous 'Lo' mode the A65's nominal frame rate is 3fps, which increases to 8fps in 'Hi' and 10fps in 'Continuous Advance Priority AE' mode.
The 'AE' in Continuous Advance Priority AE mode stands for 'automatic exposure'. Unlike continuous Lo and Hi, Continuous Advance Priority AE can only be accessed via the exposure mode dial. As we saw in the A55, which offered a maximum frame rate of 10fps in the same mode, there are some downsides to this maximum capture rate. The A65 can still autofocus continuously, but in order to be able to do this, aperture is either fixed wide open, or limited to f/3.5 if the maximum aperture allows it. You can take full control over aperture in Continuous Advance Priority AE mode, but only if you select AF-A or manual focus. The reason for this limitation is the same reason why you cannot combine AF with manual aperture control in movie mode - at apertures smaller than f/5.6 the A65's AF system receives essentially no light, so cannot function.