Ray, i would try to photograph these items in bright, but indirect daylight. In other words, not in direct sunlight, but perhaps on a sunny day in the shade. Do your best to focus correctly and make sharp pics. I don't know what kind of camera you are using so i can't give you too many more details.
If by keris you are referring to Indonesian keris then you should post pictures and questions on the keris forum. If these are Moro kris than this is the proper forum for posting. I look forward to seeing them soon.