2006-11-15 01:00:41 · 4 answers · asked by Anonymous in Arts & Humanities ➔ Visual Arts ➔ Photography
Each source of light has its own colour.
The sunlight is white, and so is a photographic flash.
A bulb is a bit yellowish-reddish, and fluorescent tubes turn to be slightly green. The difference from natural light is small - we cannot see it, but the film or the digital camera can.
If you are working digital, you can change the picture afterwards. The easier way is to use a FL filter from the beginning. This will help you also if you work with film. Since there are 2 kinds of fluorescent tubes, there are also 2 types of FL filters.
2006-11-15 01:30:15 · answer #1 · answered by corleone 6 · 4⤊ 0⤋
Well, since no one has answered this question correctly up to now, I respectfully submit the following.
The problem is the color temperature of the lighting which is measured on the Kelvin Scale. I.e. if you use daylight color film inside with only incandescent lighting, your picture will have a reddish coloration. That is because the color temperature of the incandescent lighting is about 3200 degrees Kelvin, whereas daylight film is balanced for about 5500 degrees Kelvin. You need to look up the various color temperatures of the lighting, or use a meter to measure the color temperature and get the approrpiate filters to rule that out.
Fluorescent lighting is available in many different color temperatures, so you would have to figure out which tube are being used and use a compensating filter. The same is true with incandescent lighting. Your best bet is to obtain a flash unit that can be adjusted in strength, i.e. mine is 1/8/1/4,1/2,3/4 and full brightness. Use just enough flash to override the ambient color and you will get it right. So you can do it and make sure that you get a good picture, bracket your pictures - taking 4 or 5 of the same picture but using different lighting strengths.
2006-11-15 14:56:21 · answer #2 · answered by Polyhistor 7 · 0⤊ 1⤋
Because flourescent tubes don't give a steady beam like incandescents. They actually produce an intermittent "flash" of light that happens so quickly we *percieve* it as steady light, 55 cycles a second. The film is sensitive enough to show the gradation of light and shadow produced.
2006-11-15 09:05:41 · answer #3 · answered by anna 7 · 1⤊ 0⤋
the pictures could be under exposed
2006-11-15 09:08:23 · answer #4 · answered by samantha 2 · 0⤊ 2⤋