With great interest I read this discussion started by Pat in San Jose. Man, what a expertise and knowledge on this forum, really outstanding.
In the beginning Pat stated:
That's just where I'm facing problems. I bought on my Nikon D7000 a Nikkor 105mm Micro. I faced the problem of using the right aperture when I made a macro of a Green Lacewing. Here a 100% crop of his head:In the part of the tutorial I did follow, it is approximately true (except for macro shots) that for equivalent fields of view, to maintain the same depth of field requires an f-number inversely proportional to the sensor width.
Groene gaasvlieg (Goudoogje) \ Green Lacewing (Chrysoperla carnea) by PjerryT, on Flickr
With smaller apertures I couldn't get the matrix in the eyes clear (diffraction). But now, as you can see the DOF is too small to get the total insect sharp all the way. Further backwards is no real option, because the insect will be too small on the picture (and that's not the reason why I bought the lens ).
I'm facing the problem with close-ups from flowers, macro's from insects, a.s.o.
Did I bought the wrong lens or is their a simple work-around? Apply for a macro lens also the DOF rules? I'm really interested in your answers.
I hope my English is good enough to clarify my problem.