A ball head is a very useful tool for photographers. Ball heads are used to mount a camera onto a tripod. Once mounted, the ball head allows the photographer to pan a shot, or move the camera's viewfinder while maintaining steady balance.
Your camera lens would be set for the distance from you to the mirror plus 2 meters if you wanted the image of your sister to be in focus. If she wanted to take a picture of her own image with the camera she is holding next to her head, her lens would be set to 4 meters.
The horizontal parts of a window are the sill on the bottom, and the head on the top. On the sides, running vertically, are the jambs.
Look at the base plate of your camera. There should be a threaded socket there. Your tripod will be equipped with a corresponding screw in its head plate. The industry has standardized on a screw-and-socket arrangement (it's called 1/4" x 20 if you care). All tripods and all cameras should fit one another. Many camera sockets, and some tripod screws, are now plastic or nylon so you need to be more than usually careful not to "cross thread" and "strip" the threads in either the socket or the screw. Underneath the tripod head the screw usually has some sort of knurled handle or grip for turning it, plus a wheel. You're not going to use the wheel yet. Using the knurled grip, back the tripod screw down until it just shows above the head plate. Position the camera's socket over the screw and gently start the screw into the socket by turning the knurled handle. If you feel resistance, back it out and try again. Any serious resistance may mean the screw is cross threaded and if you continue you risk stripping. When you have the screw well into the socket (about 1/4" will do it), the camera will now be attached to the tripod but you'll probably notice that it "flops." This is where the wheel on the screw under the tripod head comes in. By turning the wheel up the screw under the head you tighten the base plate of the camera against the head plate of the tripod until the camera and the tripod are a single unit. Just as you must be cautious about cross threading, you don't want to over tighten the camera to the head plate. Most of these things are relatively delicate and can be damaged or ruined by too much enthusiasm. You just don't want the camera to move independently of the tripod. A couple of tips: you can defeat the purpose of a tripod if you touch the camera while tripping the shutter for a long exposure. Use a cable release or electronic release. Don't have a cable or the camera won't accept one? Try using the camera's self timer so you're not touching it when it trips. If your camera lacks a threaded socket, you can still support it on the tripod head by hand. It's not as good as attaching it, but it's better than no support at all for a longish exposure. On that subject, you can also steady any camera for any exposure that might otherwise "smear" by bracing or resting it on a chair, a table, a car roof, a handy railing, or whatever you can find. Bracing your elbows on anything handy may help as well. Tripods aren't always necessary: See the related questions on tripod use referenced below.
I think it depends on the quality of the tripod head, but some use silicone fluid (the chemical name is too much for me) made by Dow Corning.
Jeanne D. Keller has written: 'Basics of head and neck film interpretation' -- subject(s): Anatomy, Head, Neck, Radiography
The opposite of tail is head!
the head is on the opposite side cause he was against slavery
Anatomically, depending on the usage, it could be foot, feet, or tail. There is no direct opposite of the "head" (leader) of a company or group. But a general opposite would be "underling." The metaphorical opposite of the head (thought, reason) would be the "heart" (feelings).
The opposite of caudal (toward the tail) is cephalad (toward the head).
The opposite of caudal (toward the tail) is cephalad (toward the head).
Subject
Emily Rayner is the redhead with the camera
You should have your head opposite from his/hers
on opposite sides of it's head.
barebutt
You can find cheap, good head cameras at Walmart and Best Buy. GoPro offers excellent head cameras.