Hi all! Long time lurker, first time poster.
Went out for a walk this morning and PDAF has completely packed in, it seems. Live view focusing works fine, but when viewing through the viewfinder, the following happens:
With focus assist light on:
- The central AF point lights red
- The camera focuses the lens from wherever it is to infinity
- It then bumps back to about the 3m mark on my 50-200mm; with a 50mm prime on it bumps back a tiny way
- The focus-confirmation hexagon starts flashing along with the flash-needed notification on the left of the viewfinder
- No AF points light
With focus assist light off:
- The central AF point lights red
- The camera focuses the lens from wherever it is to infinity
- The camera focuses the lens from infinity to MFD
- It then bumps back to about the 3m mark on my 50-200mm; with a 50mm prime on it bumps back to near infinity
- The focus-confirmation hexagon starts flashing along with the flash-needed notification on the left of the viewfinder
- No AF points light
I get the same behaviour with SDM lenses.
After trying this, if I flip to live view, it hunts for a while, but then starts functioning perfectly. Unfortunately, live view is pretty inadequate for my needs!
I've tried air-blow the PDAF sensor area, factory reset + firmware update, four different lenses, and still have no idea.
The camera was a Christmas gift from a relative who's no longer with us and I've not been able to locate a receipt, so I'm a bit stuck for a shop to take it back to - consequently, any ideas before I try approaching Pentax UK (and inevitably get told where to go) appreciated!