I’ve been working on my manual focus skills with the 50mm f/1.8 lens. I found that trusting the focus indicator light in the view finder is the key to proper focus. The subject will appear to be in focus across a range of settings, but it’s only in perfect focus when the indicator lights up. In order for it to work properly, it’s necessary for the subject to be in the proper focus area (which has a red indicator when you press the shutter halfway).
