I would recommend first searching out other successful Hubbers who post photography photos. I'm trying to build my followers gradually over time by only following and commenting on Hubs that I truly enjoy, and usually ones that are related to content I want to publish, too. It may take longer to build your numbers, but that way those who follow you are genuinely interested in the content you post and will have a reason to keep coming back, rather than simply hitting the follow button and never returning.
Another way you could promote your photography is to set up a Pinterest, Deviantart or Flickr account. Why not all three? You can link to your Hubpages account on your profiles, and if enough people are interested in your work, they can check it out over here. A diverse approach to promotion seems to work best for the photographers I know. Good luck!