| Back to logs list
135141 2010 年 05 月 16 日 18:32 Reading (loading. ..) Comments (0) Category: Personal Diary
In fact, whether you are using a thousand dollars below the price of cheap DC or a few million of the DSLR, can not be guaranteed in all cases the value of accurate metering. Fundamental reason is that the metering of these cameras are the same way that the reflected light metering method. Reflected light is measured
is the principle way the camera light metering device to receive the subject is reflected light, and as a basis to determine the exposure. In layman's terms, the evaluation of the reflected light metering method is based on the object level of the reflected light intensity. This way but often can not meet all of the shooting meter
scene. Because the measurement of reflected light, after all, is a passive measurement method, the camera built-in reflective light meter will guide aperture and shutter combination produces 18% of the gray tone to this value is based on measurement of the exposure that most of the scenes photographed images of the normal parameters, but to the
Some few cases
to even make you feel headaches, such as high reflectivity of snow this type of white scenes, or evening illumination of the dark scenes of this kind, then strictly in accordance with the measurement of reflected light readings can not capture the desired photo.
metering techniques
complex skills under some of the metering
1 Do not forget the blue sky. Shooting sunrise, sunset, snow under sunny landscape,
new balance outlet, dusk night, dusk rose, with the central focus of the
or matrix metering to read the sky value, according to its exposure, you will be pleasantly surprised to find! Shooting sunrise, sunset biggest trouble is the sun in the picture to play the role of strong interference, so that the picture is underexposed. This time the camera lens at the sun next to the screen in not including the sun, read the values, that is it! Your exposure correct. If the snow is normal under the light is often the central focus of gray snow snow, no problem, read the blue sky value, you can easily get confused and exposure compensation. However, this law is taboo: cloudy. Do not go read the overcast sky, so you will die
badly.
2 digital photography to follow the general principle should be: do not underexpose portrait, landscape not too exposed. Portrait photography, the audience's eyes on the screen permeability
demanding, low tolerance for noise, not very concerned about the exposure of the background. Requirements of the main character this time not to have impurities in the face smooth,
new balance shoes, slightly overexposed
face a little bit of help to eliminate spots. Need to adjust the exposure, even after the late, as long as there is no high light whiten the face, reducing the noise exposure does not increase the face
. Landscape Photography stressed tone level,
new balance mens, the overall noise tolerance of the screen slightly, so as long as there is no high-light pre-washed, post-modified by adjusting
can get rich layers, bright colors, noise appropriate landscapes.
always look green trees
3. Encountered in the forest falls, the world field experience cloudy. Center-weighted metering mode the entire screen
framed green, read values, then do -2 / 3 file (plain green) to -1.3 file (dark green) of the compensation, that is the correct exposure value.
4 out your hand, it is your flesh gray board. When you're not sure when the exposure value, in the same light conditions, out of the palm, the palm of your hand
full or nearly full throughout the entire picture frame, with the center-weighted metering reads the data, then a +2 / 3 stop compensation (film machine), D70 a lot
file when compensation may be +1, that is,
Feminine, in the end what is taste, the exposure of your data.
cameras (digital and a variety of film) metering principles are not complicated, the most important for us to understand the camera's metering system (or light meter) is the
baseline on what to measure! More simply, the camera is a scene in the measurement of light, it is how to
Remember: all cameras in the metering process,
new balance sneakers, will
industry term called In other words, the camera's
, the exposure is intended to restore the right this gray.
Why is this particular
18% gray? Because 18% of the average reflectance of human skin gray and light (16 ~ 20%) of the same hue, but are we
most often the object of shooting. (The reflectivity of other objects, such as silver was 96%, 75% of white drawing, black 3%, etc..)
light meter work, depending on whether the subject of the reflectivity of 18%, if the reflectivity is 18%, then it is measured the value to prospective
indeed, the value of the exposure here, the subject of color and tone will be a true reduction, therefore, on our skin, the usual colorful
the scene, this standard gray tone for the reduction of exposure is very accurate.
If the subject is not the 18% reflectivity,
new new balance shoes, then the camera metering system, the value is not accurately measured, if the value of direct exposure here,
color screen will appear the impact of harmonic distortion: like shooting the white snow, dark of the coal field, the camera also to restore them as gray,
metering directly into their focus, tend to shoot the gray snow and coal.
Tips: digital photography, reasonable metering few tips:
① making snow, you can first half in front of your hand pressing the shutter, which is the metering of their skin, and then on the species you want to shoot the
Press the shutter
snow, then snow is white color. Similarly, shooting portraits dressed in black, but also should be weighted on the face and then shot composition
photo. )
② When shooting a bright object,
牛X的仿照！ - Qzone日记, light meter should be used more than the recommended 1 to 2 file index is high aperture, while the dark objects will have to appropriately reduce the exposure
amount of light.
③ seasons in the sun is enough pictures, photos will have a huge contrast, it must be on the scene bright and dark lesions were
metering, and the average exposure index between the two pictures.
Big Tip: Remember that some of the following substances, their reflection is close to 18%, and perhaps all of us shooting in the complex is very useful under the conditions:
① grass (after cutting the grass!),
new balance 574, but note, not dark green, especially green or yellow grass;
② most light green leaves or leaves of plants;
③ Some, but not all, trunk;
④ old, repair of asphalt and concrete (this is useful);
⑤ long-term placement,
自我总结 - Qzone日志, not brush oil timber;
⑥ red / brown brick, including concrete walls;
⑦ dry leaves.