Originally posted by justtakingpics Then I don't understand what the problem is if AF points won't help.
You need to understand what an AF point is. First all cameras have them. Most cameras have more than one. I don't know how many your camera has, but chances are, it has no fewer than any other camera in its price range or age. The only difference is that some camera *show* you the different focus points in the viewfinder and others don't.
But seeing the focus points in the viewfinder wouldn't help one bit here, for several reasons.
For one thing, no matter how many focus points your camera has, when using an MF lens, the center focus point is the only one the camera uses. So you don't need a light in the viewfinder to tell you the camera is using the center point - you know that the moment you mount the lens.
Second, the hexagon is already telling you when the center point thinks it is in focus. Seeing a light in the middle of the viewfinder adds no new information.
Third, the light that appears in some cameras to show you which focus point is active doesn't tell you *exactly* where focus was achieved. You'd get a light in the middle saying, "focus is somewhere around here". But if you're taking a full body shot picture of a person, then "somewhere around here" could just as easily be the face as the shirt, or a tree right behind the person. The focus "point" doesn't know what object near the center you care about, so it happily report success (green hexagon) if *any* of those things are in focus.
AF can fail too for the same reason. But I'm guessing none of your AF lenses have as shallow a DOF as your M42 lenses can, so slightly discrepancies are more likely to go unnoticed.