Thanks for your kind words. Don't surprise with that 300 mm. Because the lens is from sigma apo dg series (not only apo), so i have an option to use extra macro mode only work at between 200-300 mm. (actual distance from the dragonfly was more or less 80 cm.) About the harsh light, you're normally right, hard to manage, but i guess if one use the correct point of view, able to have this result. The sun lightning should touch straight to the subject from the correct angle and not from above. if i took this picture from the opposite side, the result was dull colours and no details (actually i had taken some of them). If i take this photo from right or left side result would be better than the opposite but still harsh light could be caught and the clearity still in question. i didn't use any diffusor, i'm a short-tempered guy and a bit lazy too for that kind of work! :-)
i'm still in practice time in photography, what i wrote here is just a new stuff for me which i got from this experience.
plain profile (16)