Macro-mode shots in Canon Powershot A80

Here are some of the macro-mode shots I took with my Canon Powershot A80. Since I am totally new new to these, I chose not to fiddle with the manual controls. All these pictures were taken in Portrait setting, with Macro-Mode on.

Click on the picture to see it in 1024 x 768.


Some more details:

Horizontal/Vertical Resoultion: 180/180 (dpi)
Bit Depth : 24
sRGB color representation
Shutter speed: 1/40sec
Lens Aperture: F/2.8
Focal: 8mm
Metering mode: Pattern (If I change this to Center weighted average, will I get more clear pics?)
Exposure compensation: 0 step.