I think u misunderstood liao. TS said the types of those photos nto the mode built in the camera..

For me, i prefer to use M mode anytime others than event.

For potrait - If wan bokeh, set the aperture to f2.8 shutter as fast as possible but still maintain the exposure u want. Try to avoid f1.8 as some part of the face will OOF.

If dun wan bokeh, u can lower down ur aperture so can include the background.

Scenery - Use lower aperture to increase the DOF, like f8 or f11. Wide or not wide focal length depends on ur style. Shutter as fast as possible to match the exposure. Unless u want those shot that freeze out somethings.

Nighshot - For me, use lowest ISO, if landscape, use f8 or f11, and set super long shutter, like 15 or 30sec to match the exposure.

Macro - Use f8 or f11 to increas the DOF and use flash.

I'm still newbie though