I never thought of incrementing it. Thanks for the tip! And I've been shooting in lowest aperture (5.6) and with manual focus.
There's not really a reason to use manual focus unless AF can't grab focus. Unless your camera has a focus aid. In Nikon cameras, the lower right half of the viewfinder will have a readout that looks like >O< except with only one shape lit up at a time. > means the subject (whatever is under the focus point) is back focused. O means the camera thinks that whatever is under the focus point is in focus. < means you're focused past the subject.
So, check it. I'm going to make you a table regarding when it's logical to use auto focus vs manual focus.
Autofocus: basically any/all times.
Manual focus:
- If the lens doesn't autofocus.
- Still life -shot from a tripod-. Zoom in on your LCD to make sure that the subject is in focus.
- Low light where your camera can't grab focus (but you should probably shoot from a tripod if you're shooting in this low of light).
- If for some reason your lens/AF system is malfunctioning and you have reason to believe your AF system is failing you.
I fairly regularly shoot with cameras that have to, by virtue of their design, be manually focused. It's a pain in the ass. There's no virtue or inherent value to using manual focus (except for in the above situations and maybe one or two I neglected). While there is virtue in using old technology for the processes, the experience, and the understanding it grants you to the general craft of photography, there's no reason to force yourself to use antiquated techniques on new equipment when those technologies afford you an easier, faster, and more accurate alternative.
I need to use a focusing loupe and a light meter when I'm shooting with a 4x5 view camera. Those have been replaced by an internal meter and AF system on my D700. So I use that.