some complain for my unit

A few days back, I check out the cam on the .253 firmware
the setup.
1. White paper with an A written in blue ink
2. The phone is suspended above the paper ~ 80-100 mm
3. Several type setting used
the results:
On .253 FW, Normal mode, HDR ON, ISO 100
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On .253 FW, Superior Auto, HDR OFF, ISO auto
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back then I though I have no idea for the second banding problem
the first one with the ghosting is because of fake HDR on the Z
where it will take 2/3 frames and stitch it together
some how on the white paper the algorithm mess up
And I retest on the .307 FW hopping improvement
the results:
.307 FW, HDR ON, ISO 400
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.307 FW, HDR OFF, ISO 800
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.307 FW, HDR OFF, ISO 1600
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.307 FW, HDR OFF, ISO 200 or 100
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bear in mind all this test was done under fluorescent lighting
gonna try out under sunlight
This is shocking ! I tried it out indoors with fluorescent lighting around my room and got the same results uzing my ZL with 253 f/w