>>4110280With 50mm at f1.8 depth of field (range around focus distance where things are is more or less sharp) is rather shallow at f1.8. Closer you focus the the shallower it get. Suggest you shoot daytime until you are comfortable with manual focusing. Film era lenses tend to be sharpest around f8 so use that if you have enough light and do not seek shallow focus.
(SMC Pentax-M 50mm f1.4 vintage lens wide open on crop digital. I use magnified live view to focus.)
