2007-10-05 05:50:46 · 7 answers · asked by Anonymous in Arts & Humanities ➔ Visual Arts ➔ Photography
Light is measured in order to determine the correct rxposure . The light needed is determined by they "speed" of the film in use. For instance, a 400 speed film needs less light than a two hundred speed film.
Light is measured either as the incident light (the light falling on the subject) or reflected light (the light bouncing off the subject.
Light is measured using a light meter which is a device that utillizes the sensitivity of certain substances (selenium, cadmium sulfide, silicon) which detect the intensity of the light and convert it to an electrical signal which is displayed on a metering device. In the old days, this meter was usually just that. I Iimagine that today the meters automatically calculate the exposure, but i still use an old cadmium manual light meter.
Todays's automated cameras do all the work for you and make fine "pictures". But for art, commercial, modeling, and portraiture, you need to do your own light measurements and use a manual camera to achieve the effect you desire, which is often quite different than the interpretation imposed by the souless eye of the automatic.
Check out Ansel Adams , the great photographer to see how light can be used to wonderful effect.
2007-10-05 06:47:58 · answer #1 · answered by Charlie S 6 · 0⤊ 0⤋
Only amateurs will inform that you just don't want a gentle meter while each digital camera has one. They simply do not recognize so much approximately publicity atmosphere. In the studio, with strobes, you without doubt want a flash meter. A consistent gentle meter does no longer learn strobe gentle. Some folks will inform you you'll be able to chimp, modify, chimp, modify, until blissful. If your paintings isn't major, sure, that's some way of doing it. If your paintings is major you employ a flash meter. Chimping will by no means get you the outcome of the flash meter. I have 25+ years of enjoy within the studio and I nonetheless use a meter every day.
2016-09-05 18:48:28 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Why is to save on guess work when setting exposure. Helps the photogapher narrow down the range in which he will work, minimizes the number of unsuitible shots.
The how is with a meter that measures the light reflecting off of the subject, either, with a handheld meter, or one built into the camera.
2007-10-05 08:25:51 · answer #3 · answered by Vince M 7 · 0⤊ 0⤋
Whether you are shooting film or digital you always want the correct exposure. But this can also determine the way that you manipulate your images. you can have a perfect exposure but it may not mean your image is great understanding how to manipulate your light exposure can be the difference in a good photo or a great photo. so understand good exposure first and then play around with it to see what you can find. But always understand the basics light is EVERYTHING in the land of photography.
2007-10-05 07:52:13 · answer #4 · answered by mcdollyla 2 · 0⤊ 0⤋
Because photography is all about using light. If you don't use it correctly, then you won't be able to take a decent photograph.
2007-10-05 06:18:31 · answer #5 · answered by rdenig_male 7 · 1⤊ 0⤋
to get the correct exposure. with your camera or a hand held meter
2007-10-05 06:00:49 · answer #6 · answered by ☆miss☆ 3 · 2⤊ 0⤋
So that you can clearly see all parts of the subject. You would not want one area to be so light that you can't distinguish details or so dark that you can hardly see it.
2007-10-05 06:12:15 · answer #7 · answered by amberleigh 1 · 0⤊ 0⤋