I’ve used a Canon point & shoot for years with great success. Never had an issue with depth either, taking it down to 130’ on several occassions. When choosing a camera make sure that the model you consider has an "underwater" mode, to compensate for the lack of color at depth. When I went shopping this past Xmas I noticed only half of the cameras seemed to have this feature. Plus make sure there is a housing available before you buy the camera. I found everything I need on Amazon.com. These days you can get a top of the line camera (I suggest at least 8-10MP) for $120, and the housing for about the same. I would start with that, and then later add a strobe to really help your photos pop. Have fun. It’s a great hobbby!