- underexposure
- Underexposure is the result of too little light being absorbed by a film due to very low light conditions or human error. Underexposed prints and slides look dark with muddy colours. This can also happen when you use a flash to light a subject that is too far away. The opposite of underexposure is overexposure.
- underwater cameras
- Purpose-built underwater cameras have specially designed rugged bodies to cope with water pressure. Like a child's toy they have big switches and dials to make them easy to use when diving. They are not the same as waterproof and weatherproof cameras.
- Unsharp Masking
- is a process where by the perceived sharpness of an image is enhanced by increasing the contrast along the edges where different tones meet.
- Upload
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\viewkind4\uc1\pard\lang1033\f0\fs16 Th\lang2057\f1 e\lang1033\f0 process \lang2057\f1 of moving your photos from your own computer to Fotopic \lang1033\f0 is known as \lang2057\f1 an \lang1033\f0 upload.
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- UV filter
- Daylight is a mixture of visible and invisible light (such as ultraviolet). Colour film is sensitive to UV light which can cause your prints and slides to look hazy with less-intense colours if it is not filtered out. Use a UV filter over your camera lens for richer colour prints.
