Affect the normal exposure ten factors

The correct exposure is to guarantee the jvc gr-d70u battery success of photos, the actual shooting key, despite the metering, but for beginners to watch for the photographer, still can often not met the right questions film exposure. This is because the photography is very complex, the factors affect the normal exposure is...

The correct exposure is to guarantee the success of photos, the actual shooting key, despite the metering, but for beginners to watch for the photographer, still can often not met the right questions film exposure. This is because the photography is very complicated, affect the normal exposure on a number of factors, a bit not note, you will make mistakes. Here are ten, affect the normal exposure factor:

1, paid no attention to the influence of environment on photography. In the same weather conditions, the shooting JVC GR-DVF21U Battery environment different, exposure to the demand to change. For instance, on permanents snow fields, or in the vast sea, due to the environmental generated intense, so the reflected light exposure should than in the environment in general about a shooting reduce.

2, the use of special mode after the film, have no in time fixed exposure value. We usually used photographic jvc gr-df550us battery film are 1 S0100. In the other film, such as mode IS0200, IS0400 must promptly corresponding exposure, will be modified to narrow or aperture will shutter speed increase.

3, the result of a light background. If the sky through a large outdoor background photographed people should be used as auxiliary light to improving the character's brightness, make the person and the gap between the sky and shorter. If do not, exposure to bright background if as a basis for the characters, exposure can produce underexposed phenomenon.

4, fall easily failure rate. Sometimes the JVC GY-HM100U Battery film emulsion accept intensity of illumination is too big or too small, and exposure time is too long or too short, the same exposure does not produce the same effect of photography.

For example, in the intensity of illumination for 1000 meter, exposure for 1 second, illuminance meter, for 1 than exposure time produced during the 1000 seconds of silver shadow density. So when we were making small aperture, slow speed exposure (slower than 1/2 seconds), should consider the factors, appropriately increase exposure.

5, range of more than limit. Some people think that cameras equipped with flash, and has to be automatic metering device, so exposure, in some darker environment filming, often not bian, let a jvc gy-hd110u battery bright flash finishs STH, but the results are often not ideal. This is because a fool on the camera flash index is very small, the effective range only in 3 meters away, if the characters within 3 meters from, can appear the shortage of exposure.

6, using a flash for the lighting source, not according to the index to correctly calculate light exposure value.

7, filming, lens combined with colored light filters, but without a corresponding increase exposure value, the result will be caused by inadequate exposure of the consequences.

8, do not consider the seasonal factors. All the year round the sun, the earth by the strength of the degree differs. Summer, sunshine point-blank ground, the brightness of the strongest; Winter, the sunlight slanted ground, the brightness of the weak. In autumn and spring, by light, its brightness between between winter and summer. Therefore, the same scene, in different season, the exposure value used should be different. During the spring and autumn; Exposure than summer should be jvc gy-hd111 battery increased a; In winter, the exposure will need to increase than summer two gears.

9, didn't pay attention to regional situation. Because the object to be adjusted in different light, the strength of the region will also have a difference. The location near the equator, distance by strong light; Far away from the equator, by weak light. So, usually the latitudes each additional 15 degrees, exposure should be increased and a half gear.

In China, it is in the same condition, the southern region shot than northern region should reduce level 1 aperture. Direct object in the altitude of high and low exposure may also be affected. The higher the altitude, the rarer the air, and the sun was atmospheric absorption, the less the brighter the light. Therefore, altitude 3000 m each rise, exposure should reduce a.

10 and the surface quality of the subject group and a smooth, color and luster of rough deep and shallow, will influence the objects absorb the light and reflects the light of ability. So, is in the same light, also should seriously consider scene reflects the JVC Camcorder Battery light of ability. For example, the water, the sand beach and snow scenery, reflective performance is strong, photographic quantity are properly reduce than normal scenery; Taking the rough surface, tonal deep black object, like bushes, such as coal, photographic quantity are better than ordinary objects to increase appropriately.