I agree with Stef word for word. Are they dead like Dave's ? Are they stacked? How do you get the little buggers to sit still?
Don't tease, tell us how....john
Thanks to all for the nice comments - I must remember the 5 limit Pat - thanks for reminding me.
They are neither dead subjects or stacked images but I do try to maximise what little DoF there is available by the angle of the shot.
You will notice that the majority are taken where the creature has its least depth - side on. If I'd taken a head-on shot much of the insect would be have been out of focus. As an example, the first shot is at a diagonal and I've had to sacrifice focus of the far wing.
I use the a900 in aperture priority with the Sony 100mm macro lens usually at about f10 but I do go as small as f18 at times even though it means a diffusion hit
I try to keep ISO at 400 but in poor lighting (I almost never use a flash) I'll go as fast as 2000.
I use centre spot focus and metering, always hand-held (there's no time to set up a tripod with these critters). With image stabilisation I'll use exposures as slow as 1/20th second but obviously prefer higher whenever possible.
I nearly always use autofocus and the trick here is speed. The shutter must be fired the instant the camera finds focus – almost simultaneously. The tiniest delay whilst hand-holding at these magnifications will guarantee you've moved and even the smallest amount means the shot will not be focussed correctly.
I always use raw and all processing is with The Gimp running in Linux OS. Many shots are quite heavy crops from the original.