I am looking for deep DOF. I have only zoom-telephoto lenses, and at 300mm I am able to use an f29 aperture. At a shooting distance of 2m, I get a theoretical depth of field of 6 cm. In reality I’m getting a bit less (unless I do focus stacking, which is a pain). Of course, as I stand back further I get more DOF but illumination becomes a bigger problem.
In theory I can push it to ISO 25600, but since it’s not a D3 I’m of course seeing some noise. I’d love to shoot at ISO 100 but my (poor) lighting forces me to shoot around 1200. Not my first choice, but better than nothing.