50.0X Optical Zoom 50.0X Optical Zoom of Sony HX400V will give you a lot of flexibility considering this will be your only camera during the day.
Medium size Body With relatively smaller body compared to DSLRs and better ergonomics compared to Compacts,Sony HX400Vis a good compromise between size and functionality.
660g Carrying this weight all day may not be very comfortable for you.
Body Thickness 103mm With a thickness of 103mm,Sony HX400V is not a pocketable camera for sure.
Small 1/2.3" (6.17 x 4.55 mm) sensor Sony HX400V's small sensor struggles in low light situations compared to larger sensor.
No RAW shooting capability RAW files contains much more color information compared to JPEGs, and gives you more room for post processing without significant quality loss. They provide wider dynamic range and option to recover shadow and highlight clipping to some degree.