I haven't done macro for a long time, and all I have are AI or modified pre AI lenses. Lens looks ok for sharpness, looks like focus point was on fore most part, maybe a trifle of shake from mirror slap or shutter release.

That said, one way to know your macro capabilities with your lens is to set up a yard stick or ruler at a 45 degree angle and focus on it at different apertures so you will know how much you have for a depth of field at that aperture. If you use a remote trigger, this will also let you know how much mirror slap will figure in. There are more sophisticated was of doing this, but it will get you in the ball park to know what you want in focus and how sharp you lens is.

Ron

I personally don't use a 105mm I use a 180mm macro Sigma on a 7200 and generally do not shot without the use of a tripod with the system because it is quite heavy. When shooting manually the tripod gives me an extra hand which I use to fire remotely or check my LCD for focus. When I am shooting without the tripod I try to find a way to position my body or arms to help me hold the camera steady. I don't really think about my controls that much as I try to set my ISO and then work the dials as needed and that will come naturally the more you use the camera.