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Im taking a photography course and I am stuck on a few questions that I can not find the answers to.? |
An incident light meter is usually pointed toward, a. the subject from the camera position b.the camera from the subject position c.the camera from the camera position d. the subject from the subject position Given a shutter setting of 1/250 sec, you would double exposure by setting the shutter at a.1/30 sec b.1/60 sec c.1/125 sec d.1/500 sec to reduce the effect of camera shake or camera movement, you should use an equivalent exposure combination of a.faster shutter and larger aperature b.slowere shutter and larger aperature c.faster shutter and smaller aperature d.slower shutter and smaller aperature given an aperture setting of f/8, you would cut the exposure in half by setting the aperature at a.f/16 b.f/5.6 c.f/11 d.f/4 As you stop down depth of feild ______ and light passing through the aperature ______ a.increases/increases b.decreases/increases c.increases/decreases d.decreases/decreases Thanks any help would be much appreciated. Well, so far everyone but wackywallwalker has missed the first one which is not surprising as few photographers use or are even familiar with an incident meter. Often you see cinematographers using incident meters. Description: "A meter capable of taking incident light readings features what looks like a half of a golf-ball-sized hemisphere, usually on a swiveling support. To take an exposure reading instead of pointing the meter at the subject, as one does with in-camera and reflected meters, you instead place the meter in the same light as the subject." Effectively you are placing the meter at the subject pointing at the light measuring the light falling on the subject rather than the light reflected from the subject. One reason for taking an incident light reading is for properly exposed b&w negs using the Zone System of exposure. 1/125 of a second is half as short as 1/250 which doubles the amount of light reaching the film. Think about 1 second vs. 1/2 second. a.faster shutter and larger aperature To "stop" motion you use a faster shutter speed which doesn't give as much time for the moving subject to move relative to the film thus minimizing blur. But, to maintain the same amount of light reaching the film you have to open up the lens by using a larger aperature. The following combinations all allow the same amount of light to reach the film: 1/30 @ f/16 1/60 @ f/11 1/125 @ f/8 1/250 @ f/5.6 f/11 cuts the exposure in half from f/8 Each of these are one full stop from the next: f/5.6, f/8, f/11, f/16, f/22, f/32 From left to right you are decreasing the light reaching the film by one half with each number. From right to left you are doubling the light reaching the film. As you stop the camera down (from f/8 to f/11 for example) the depth of field (also known as depth of focus) increases and the amount of light reaching the film (passing through the aperature) decreases. Source(s): 1) http://www.luminous-landscape.com/... d. the subject from the subject position c.1/125 sec a.faster shutter and larger aperature c.f/11 / 16 1 shuttle unit equals 1 aperture = f11 + 1/30 when faster movement f8 + 1/60 or when even faster movement F5.6 + 1/125. did u get it now? (a)The subject from the camera position (b) 1/60 sec (c) faster shutter and smaller aperture (d) f/16 (b) decrease and increase. 1. b. the camera from the subject position 2. d.1/500 sec 3. a.faster shutter and larger aperature 4. d.f/4 5. c.increases/decreases 1=b 2=c 3=a 4=c 5=c answers: B) camera from subject C) using shutter speed alone, you would double it with 1/125 from 1/250 A) fast shutter speed, large aperture A) from f/8, cutting the exposure in half would be f/16 because the aperture size is two stops smaller C) large aperture=shallow depth of field. Stoping down your aperture decreases the apertures actual size increasing the depth of field. A couple of these questions are worded really bad, but I think I've got the right ones. Good luck. |
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