So for those who are interested to find out more you are welcome to view my up;oads in flickr.
Thank you for all the kind comments.
#1 & 2 was when I was trying out the 100mm Macro lens handheld. The 150 was too heavy for me then to hand held and the DoF was simply too shallow.
#3 was challenging coz it was pretty breezy that day and have to resort to handheld and slight forward and backward movement and instinct as well as trusting your eye and calibration, fps burst and fingers crossed. Simply put............"Luck"
#4 was out birding and just couldn't resist the wild Orchid and nice light, So was taken with a 100-400 and again blah blah blah ........."Luck* and fingers crossed.