I had a couple of questions about this head, and can find almost no information about it on the internet. There is only one stock photo I can find on the internet:
1. What are the differences between the Davis & Sanford ballhead models BHQ11 and BH11?
2. Could someone possibly point me to a link to user's manuals for these products?
3. In the picture above I see the following knobs: main (ball) lock, quick-release lock, and a third knob which is probably pan lock. Is there another knob in back for tension control which is not pictured? Does anyone have additional pictures which may illuminate the situation?