Mechanical Pencil: 0.3mm vs 0.5mm vs 0.7mm

This time I decided to post a comparison that I was looking for and couldn't find, between different sizes of mechanical pencil's lead.
I usually use the 0.5mm, which is the standard pencil around here. After trying out the  0.7mm, it seems to feel too "fat" for me to write with. The 0.3mm though, was a nice surprise. It is very accurate and comfortable to write with - although it is visibly lighter than the 0.5mm lead.

Left to right: 0.3mm,0.5mm and 0.7mm.

This one had strong lighting, so the colors seem a bit light.