If you enjoy photography and normally use an SLR, then that's what you should take. There are many things you cannot do with a small point and shoot, including control depth of field. If you click the link below, Kyushu, Yakushima and Rural Honshu are all biking trips where I took my heavy Canon 5d. And biking in Japan means constant mountains.
http://www.waddo.net/Indexpages/mainphotoindex.htm
Also, I think very nice travel videos can be made if you take the time to learn. The link below has several biking videos. Perhaps the nicest one is the last one at the bottom of the page, Shikoku, as I also used a GoPro along with a regular video camera.
Keith Waddo Waddington travel videos
All in all, I say if you do real photography or videography on regular holidays and enjoy it, then you should do the same whilst bike touring.
Just my 2 cents worth.
Waddo