A significant motive for starting a tumblr was to better interact with the people who maintain some really swell ones.  Jennybird29 is one, and I like this as much as its aesthetic as for what I can learn from it as an amateur photographer.  (To whit:  There is a place and a time for an enormous aperture, no sense buying any less, and yet still a place to stop it right down!)

(via jennybird29)