Originally posted by D1N0 I was hoping using manual lenses would become easier on the K-1 than it is on an aps-c camera because of the bigger OVF. Actually it has become much harder to get focus right. PDAF Focus confirmation is not reliable and cannot be calibrated for manual lenses so i don't use that.
The lower magnification of the viewfinder is almost certainly the main reason...
I'm surprised that there's no longer a way to adjust PDAF calibration for manual lenses. On the K-5, K-3, K-3II etc. this was possible using AF fine adjust. Of course, focus confirmation isn't a particularly accurate way to focus fast lenses, as there's too much leeway either side of the accurate focus distance. But AF fine adjustment certainly helped. Are you sure this has been removed from the K-1? It seems an odd and unnecessary omission...
If you want accurate manual focus, I think the best option is to use a magnifying LCD loupe. It's not very elegant-looking solution, and not as enjoyable as looking through the OVF - but it works very well indeed.