Head Room: The space between the top of a subject’s head and the top of the frame. Headroom must be carefully apportioned so that there is not too much or too little, especially if shooting for transfer to video or for blowup, where the frame will be cropped in a little on the top and sides.
Macro: It’s basically close-up photography where the image projected on the camera sensor is relatively the same size as your subject. Super Macro allowa people to see more; what this means is that, your sensor sees closer than the human eye which leads to some unusual photography.
White Balance
Why would you need to get the colour right in your shots?
White balance (WB) is the process of removing unrealistic colour casts, so that objects which appear white in person are rendered white in your photo. Proper camera white balance has to take into account the "colour temperature" of a light source, which refers to the relative warmth or coolness of white light. Our eyes are very good at judging what is white under different light sources, but digital cameras often have great difficulty with auto white balance (AWB) — and can create unsightly blue, orange, or even green colour casts. Understanding digital white balance can help you avoid these colour casts, thereby improving your photos under a wider range of lighting conditions.
When using a camera there are symbols that indicate to illustrate what effect you intend to use in your picture or when filming.
The picture above is the difference between when white balance is applied and when its not!!!
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