I do more close-up photography than I do rolling landscapes. Thus depth of field, hereinafter called DOF, is of concern - but the calculation, or even just guessing is a pain and often results in re-takes. And, if the bird has flown, not quite so easy to re-shoot
Witness this shot, a failure as regards DOF:
The needed DOF for the nearer cicada husk is between 25-30mm. Going back indoors and using a DOF calculator told me I was too close (surprise) for the f-number I had selected. I could have gone back and forth a few more times but, although taking the time is no problem for a geezer, it was 98F and I do lack patience.
Enter the mighty Panasonic micro 4/3" camera with it's live view and focus-by-wire lenses. By going to manual focus, a 10X live image of the subject is shown on the LCD or the EVF - whichever you're using. It has just occurred to me that all I needed to do was move the camera and then check the sharpness of all parts of the cicada husk in manual focus mode. 'Cos it's live view, ennit? A little awkward on a tripod but not impossible.
It's all done right there in real time, with a high probability of success. Haven't tried it yet.
Is this something that "everybody knows", making this post a waste of your valuable time? Any comments welcome!
BTW, I don't intend to get into focus stacking, mostly the shots are for cataloging and/or web viewing.