Quote: ....they appear to be not very good focus and have noise........i had continuous shooting mode . .. . . .
When you cay continuous shooting do you mean the frame drive (which allows the taking of several frames per second) or continuous auto focus which allows the focus to follow a moving target?
If it's the latter that may explain focus issues. With most AF SLRs when in single shot mode the shutter is locked until the camera has achieved focus. When in continuous AF mode though this "safety" lock is disabled and the shutter can be released even if the subject is not in focus. Dependent on the model some systems are even sensitive enough to react to a bit of motion in the photographer not the subject. Also using the camera with all AF points active in this mode can confuse it somewhat if there are to many potential focus points of equal contrast in the 'finder and the AF tends to hunt somewhat.
With continuous AF I generally find sticking with one, preferably the centre, AF point is preferable - and even then a percentage of the pix will be off-focus because the AF has lost tracking somewhat...
Not sure about noise though, even at high ISO bright conditions like those in your sample pic tend to mean noise is minimised. I've certainly used my EOS D30, not a particularly noise free camera, at ISO800 in good light without major noise issues - while my 20D can easily go to 1600 under the same conditions.
PS don't pixel peep........ noise always looks awful at actual pixel level (100%), try viewing at 50% or 'print' size (if using print size check the output resolution under Image Size is set to something sensible like 240 or 300dpi - many cameras output JPEG images to PhotoShop at monitor resolution, usually 72dpi...).
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