a5100 + 50mm oss settle..

not necessary pics of heads with blurry background, depends on far you stand n what aperture u set. but if you do need some bokeh food or gf pics that stands out from the rest for your instagram n fb posts (i assume most photography in modern days are for that purposes) then you're covered. if you want take landscape pic or group photo just use ur phone la, most people wont notice the different in social media.