What seems to happen is that when the light is emitted from the flash, this leaks through the chassis to the sensor, which results in inconsistencies in the photos. This, of course, is a problem that users who have an Xperia Z1 Compact do not like. The fact is that it seems that the pink and lime models are more affected than, for example, those with the black housing.
This has been made known in some forums, such as German Android-Hilfe, where for now the response in one of its affected user threads already exceeds 180. show pictures in which you can see the effects that appear when using the flash (even with this covered), such as those that we leave below and that are an obvious sample of what these users say happens to them with their Xperia Z1 Compact:
The effects that can be seen in the images are not exactly unknown, since they are very similar to those that occur when an object, such as a finger, is placed right in front of the flash on a mobile device when taking a shot. Thus, you have to be cautious about it and let the company decide if it considers it necessary (the affected users indicate that this is not the problem since they have taken the shots with their fingers on the edges of the terminal).
It will be necessary to see if what the users of the first forum that we have indicated say really happens and, in addition, it must be taken into account that also in the Sony official forum It has started to see users who have the same problem. Therefore, it will be necessary to be attentive to know what is really happening, since it would not be exactly good news if this were confirmed.
Source: Sony Mobile Talk