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Forum: Troubleshooting and Beginner Help 01-04-2018, 01:38 AM  
DFA 28-105 can't reach infinity focus at 28mm
Posted By antiguru
Replies: 7
Views: 1,144
I'm mostly convinced I found the reason for the behavior, although I don't fully understand the logic behind it. I have a clear filter attached to the lens that had a tiny amount of dust on it. Cleaning the dust allowed the camera to focus to infinity at the 28mm-end. It seems the combination of the lens with a filter on the K-1 together with even a little amount of dust confuses the AF on the wide end... Alas, I'm happy the lens actually works fine.
Forum: Troubleshooting and Beginner Help 11-20-2017, 02:44 AM  
DFA 28-105 can't reach infinity focus at 28mm
Posted By antiguru
Replies: 7
Views: 1,144
Following up to the problem, I tested the lens on a different camera (K-50) and there it's able to focus just fine at infinity. Does anyone have a suggestion on what the reason could be?
Forum: Troubleshooting and Beginner Help 11-14-2017, 12:14 PM  
DFA 28-105 can't reach infinity focus at 28mm
Posted By antiguru
Replies: 7
Views: 1,144
Same problem here, but unfortunately my lens doesn't have warranty left. I'll play with the fine adjustment and report back (if I don't forget). It's very annoying...
Forum: Pentax K-1 11-17-2016, 03:13 PM  
WiFi analysis
Posted By antiguru
Replies: 9
Views: 1,499
Hi,
I did a quick analysis of the WiFi functionality of the Pentax K-1. Feel free to have a look at articles:pentax_k-1_wifi [wiki.antiguru.de]. Although just a dump of information it might give some clues on how the communication actually works.

Cheers
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