Mainly the best selling photos online are photographs of work and commercial activities, persons performing their work in the office, warehouse, etc ...
These photos, when they show recognizable persons must submit an authorization in order to be exposed for sale.

Look at a magazine, book, look at the type of ads and photos of artwork, such pictures are the most popular, use their imagination to compose and shoot ideas, concepts, objects of all kinds: food, tools .. .

Travel photos are also in high demand, pictures of places, monuments of all countries, pictures of the cuisine of each country.
Logos, icons, pictures of everyday life, family, sports, music concerts, fashion, beauty, seniors, fairs, conventions, store.

Regardless of the type of photos that are always in demand, there are times in the year are required concrete pictures, pictures of beaches in summer, snow in winter, when Christmas approaches photos related to such parties, equally with all other events holidays, Carnival, Halloween, etc ...
If you are close to the Olympics or the World Cup, surely will demand sports photos related to such events.

Note that the pictures you choose to submit to the agencies must be accurate, clearly showing the subject wanted to capture. Do not send all photos of a session, send only the best.

And also note that although it has captured the moment is unique and unrepeatable if the picture is not technically perfect agencies do not accept it.

In December, these are some of the best-selling photos on the website of Fotolia.