I thought I would post this for anyone who is having focusing problems with their KR and considering sending it to be adjusted. I bought my KR in March and noticed that focus seemed a little off. I’m not sure if it was exclusive to the tungsten FF issue, although it was more evident indoors. This may have been because outdoors I was using a higher aperture and in turn giving a greater depth of field that hid the focus being off.
I contacted Pentax customer service, and one of their suggestions was to use the Tim Jackson focus chart before sending the camera for repairs. I know everyone has seen a slew of these chart tests, but I think unless you happen to have a home optical lab, this may be the only way for a consumer to check the focus.
I set the chart up and followed the instructions. Camera on tripod at 45%, Center focus point, and used a shutter remote. I had the white balance set to AWB, and had the most recent firmware installed on the camera (1.01). I also did the exact same test using my Pentax DL.
Here are the results.
Pentax KR with DA 40mm @ 2.8 - AWB Pentax DL with DA 40mm @ 2.8 - AWB
I decided to send the camera along with lens to CRIS repair. It took about a month to get the camera back, and the return process was rather easy. The CRIS website lets you check the progress of the repair online.
At CRIS they adjusted the camera to manufactures specifications. The repair invoice also noted updating the firmware, but when I checked it was the still 1.01. Maybe they just reinstalled it to get the factory defaults?
Here are the results of the repairs using the same test. Also I did the test using the tungsten white balance workaround suggested by pentax.
After Repair Pentax KR with DA 40mm @ 2.8 - AWB After Repair Pentax KR with DA 40mm @ 2.8 - Tungsten white balance
The focus using tungsten white balance although not totally perfect is good enough for me. If I wanted to get it spot on I could set the AF adjustment menu to -3/-4.
After Repair Pentax KR with DA 40mm @ 2.8 - Tungsten wb -3 AF adjust