Sony A900 - Manual (Page 90)

90
When you want to activate only the Optical preview function
Set [Preview Function] to [Optical Preview] in the
Custom menu
(page 117).
Notes
• The image in the viewfinder will be darker during the Optical preview.
• The auto focus does not function during an Optical preview. Focus on the subject
beforehand.
• The Intelligent preview feature cannot be used during BULB shooting.
• The Intelligent preview feature cannot be used when the buffer memory of the
camera is full.