Select either Eligible (Main) or Exhibition gallery, depending on the image that you are posting. Images taken during the Challenge period with a Pentax dSLR camera can be posted into the Main gallery. Images taken at any time period with any camera can be posted to the Exhibition gallery. Remember that the winner of the Eligible gallery will host the next to next challenge.
(NOTE: since Challenge #13 there are 2 galleries in each challenge: "Main" and "Exhibition")