SOLVED
Hello, I'm getting very poor quality of images when flash is used in camera. White tint affects images. i'm using Xperia M(15.1.c.117). I have uploaded sample images. Thank You.
Dear SONY! 
Camera module needs serious upgrade in flash and focus processing...This 4.1\4.2 stock module could be by practical comparison, the worst camera module ever on a Sony smart\phone from your whole experience with camera modules. It does not look lika a Sony quality camera, but a very cheap module maker!
Flash is still burning the photos in macro lowlight shots...and almost on a quarter of the image, corner's blurr is ruining most of the daylight shots, not to mention very low details in viewfinder and photos (same as previous samples on this topic)!
Take note for M's 4.3 upgrade to change the camera module, it's a shame on your great experience, and a sad choice for the ones who bought it for camera usage!
With great hope for a good job done with the upcoming upgrade,
Very deep hearted Thank You's, to all involved fixing this issue!
Alexander 
also , it has bad quality in indoor normal light (or low light ) in compare with other HD 5MP phones and alot of focuses in recording that can't turn off 
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