New answers tagged focus
Elvey's hint with the water-drop works! But only for small QR-Codes. The bigger codes don't fit on the screen. I solved the problem with my cheap Huawei Y3 by using the front-camera, which uses a shorter focus.
It appears that Open Camera (net.sourceforge.opencamera) does contain a feature where the focus could be manually set to auto, infinity, macro, manual (locked-on-touch) and continuous. It does appear to mostly work on a non-rooted Nexus 5 — changing the setting to infinity does remove the extra focusing delay prior to taking each picture (...
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