[Reserved] Light - a detailed tutorial (1-2) _ The first land thieves.

Original Address: - <wbr> a detailed tutorial (1-2) "> Light <wbr> - <wbr> a detailed tutorial (1-2) of: Wild Blue posted the other day forum users xyq720365 foreign Tutorial ' .Light detailed tutorial (translated from foreign sites) '. This tutorial from Web site: itchy animation-digitalpaint. tutorial in 4 parts, seems to be simple, but in reality in-depth and practical. to communicate with the xyq720365, I translate this tutorial. You If .carefully understood, there may be no small achievement! Copyright by: Richard Yot © 2008 translator: [Bo bile animation studio] <i> If reproduced, your rights and well-known translator. </ I> <wbr .> Light - a detailed tutorial <1 Section "Figure - <wbr> a detailed tutorial (1-2)" /> Description: present status of the various light of knowledge, is often involved. .In my opinion, for all the artists that are very important, but in this context, it seems only to find little details. .I've read countless digital art and traditional art book on the issue of light, it seems that only a shallow hit. .Any hope to create a real sense of the performance of people need light in the physical world have a good understanding of the behavior. .I think those first three-dimensional aspects of the crime of textbooks, all repeating the same boring husband type, and let the junior artists stay in the light of the scene created a shallow understanding. .The result is that digital artists in general misconceptions and bad light use. .Photographers and artists a great need for better understanding of light, because light is a key element of all art. .No understanding of it is difficult to achieve realistic, there is no atmosphere. .Because the Internet never found any detailed articles on the light, I decided to write this article. .I said most are from my own inquiry can be accomplished, it may not have all the right places. .Content may not need explanation seems very shallow, but at least for me, certainly not the case. .Because it requires careful observation of the surrounding world, to understand how light in different circumstances is what the presentation. .Part 1: Basic principles, I will use to the full text of the white ball icon is on the board in different daily situations Mingguang behavior. .Figure - <wbr> a detailed tutorial (1-2) "/> here is the performance of a sunny afternoon. The main source is the sun, while the blue sky with another feature provides a second source. Some of the ball .between white light and provide a rebound in the third light source. The brightest light comes from the sun, which is a small range of light from the emitted white light, it produces a clear shadow of the boundary. The second source is the blue sky, it is .a very large range of light, the consequences are very soft shadows (translation: that is very vague boundaries) (number of cases, essentially all direct light emitted by the sun, overshadowed by the effect). then I will talk about on the light source .and shadow size more detailed content, but now remember the more narrow light, shadow the more hard (translation: that is the boundary definition). In this scenario, the light from the sky for each object are projected on the strong .color.. the ball's shadow is cast because it was blue sky blue light, while the side of the sun because the ball back cover off a ball and its white light from the sun, the ball was not part of direct sunlight also shows .the blue tones, which is also due to be irradiated by the blue sky. Finally, in between the plate and the ball was bluish light reflex (although plate and the ball is white), because the sky is light blue with white objects .reflection. are in close proximity to the surface far away from the surface better than receiving such a reflected light, so the bottom of the ball than the side of the ball appear to be more light, because the closer from the whiteboard. Figure - <wbr> .a detailed tutorial (1-2) "/> image projection area is the darkest depths of the shadow and the ball on the boundary where yin and yang: this place is called light and dark boundary line. .The depths of a very dark shadow cast because it can not receive sunlight, and the ball is also light and reflected light from the sky in the cover up. .The other side of the projector appears bright, because it receives more reflected light sky and the ball. .Why is the ball of light and dark border line of the darkest areas? .In part caused because the contrast from the bright sun on the ball too close to one end of the dark to make it look better, but also because it received less white reflected light. .Unlike the rest of the ball received full sun or part reflective white, its main source is the blue sky. .It is between the main light source (sun) and supplementary light (white reflection) between the parts. .Why is the sky blue light? .Visible light by small particles called photons, these particles have different colors of light according to wavelength: the shorter wavelength blue light photons contain, in turn, red light is composed of a longer wavelength photons. .Figure - <wbr> a detailed tutorial (1-2) "/> white sun shade is composed of a continuous spectrum, in general, divided into several rainbow color (from the gradual lengthening of the wavelength composition: Purple ., green, blue, green, yellow, orange, red.) mixture of these colors white. However, when the sun shines through the Earth's atmosphere, the shorter the wavelength of light is scattered. Our atmosphere is a lot of gas and atoms, molecules ., and suspended in it. photon traveling through the atmosphere these tiny particles with the collision of photons will be deflected to the other direction. shorter wavelength is more likely to be deflected, so the impact of these photons are scattered in all directions, which clearly shows .blue. Figure - <wbr> a detailed tutorial (1-2) "/> <em> without a cloud in the day, the earth's atmosphere scattering blue light is irradiated to all the objects around us. .</ EM> long wavelength light, such as red, could not be farther through the atmosphere scattering. .This is why sunsets are red: because when the height of the sun is low in the sky, the sun only through more atmosphere to us, many in the consumption of blue light in the scattering, leaving the red light was presented. .Figure - <wbr> a detailed tutorial (1-2) "/> <em> sun red sunset in the evening because of the short blue waves are scattered consumed. * Note the blue light is scattered in the East .plane of the sky and reflected waves on the move towards our diffuse. </ EM> on the bounce in all directions causing the atmosphere blue blue photon effect, an effect clearly visible in space. blue light is not sufficient to illuminate .the area under direct sunlight, so in the open you can still see the shadow (blue color). Figure - <wbr> a detailed tutorial (1-2) "/> <em> photo with shadow .strong blue color because they are light blue. .</ EM>-ray ejection when the light hit a surface will be a rebound or absorption, the color of the surface of the decision (translation: the color of objects is the role of the visible surface features.) .A white object will reflect all wavelengths equally, in turn, a black object absorbs all wavelengths. .When the white light hit the surface of a red, blue and green wavelengths of light are absorbed while the red light is bounced (for simplicity here, I just use the basic colors that are actually continuous band). .So if a red white light hit the surface of the rebound surface that is red light photons. .When these photons hit the bounce path to the next surface, a red light will illuminate it. .This phenomenon is called radiation, adjacent to the color of the object will thus showing the effect of mutual influence. .Figure - <wbr> a detailed tutorial (1-2) "/> <em> reflection of light from the shutters put into the wall of the wood color. </ EM> map - <wbr> a detailed tutorial (1-2 .) "/> <em> after the bee's stomach lining is reflected red light from the strong red color of the ground. .</ EM> radiation is often a subtle effect, it has the performance of light played a significant role. .In soft or dim light, radiation may not be obvious, but in bright light can affect the object to be adding a lot of color. .If the light is the same color between objects in the reflection, the radiation will bounce light to enhance the existing color of the lower surface, creating a very saturated color, so color hair brilliant - sometimes you can see it under bright sunlight .phenomenon. .Figure - <wbr> a detailed tutorial (1-2) "/> <em> the wooden slats of light between these rebound bounced back to the same color according to the color of the wood to be strengthened. The result is the color of the light .and the lower surface of wood together to create a color on top of an existing warm saturated colors. </ EM> How do we choose a high-profile and low profile to depict a scene is subjective and dependent on interpretation. vast majority of cases will be bright and .a balance between the dark, which produces an average or moderate gray, which is we believe that the general situation. However, there are some cases the natural order of things tend to bright or dark in the extreme, as fog or .snow, and as night. an artist may be for visual impact or convey a specific feeling and choose to strengthen these extreme state. high-profile high-profile picture has a dominant white or very bright colors, and tend to see .up bright and airy. high-profile light is often (but not always) soft, details of the generally low. natural fog and snow can be found in the high-profile light and shadow here, even if a lot of light because of the very pale around the ejection. .Figure - <wbr> a detailed tutorial (1-2) "/> <em> to highlight the simplicity of this photo colors created by the very few: there are white and some dark gray black. .</ EM> because of its low-key low-key picture of the properties of which only a little light. .High contrast lighting is often very hard. .Low-key lighting to create a very gloomy atmosphere and often so used. .The most typical low-key state is the night light, but also find it in other circumstances, such as storms or in the room. .Figure - <wbr> a detailed tutorial (1-2) "/> <em> the artistic effect of this picture is a low-key lighting enhanced. </ EM> the white balance state of our daily experience the vast majority of light .all colors, but our brains are very good at these (color) filter. When three bases vague mixture of colored light, our understanding of brain white bar. Even in the light of strong color, .We also have the ability to filter the information received by our eyes, which gives us a way to understand their relative rather than absolute manner. this most typical when using a digital camera that is open daylight white balance mode: This is a .will reflect the true color of the neutral setting. The following example, taken by me to the window as the light source image. just indirectly, from the cloudy sky, is relatively neutral. Figure - <wbr> a detailed .Tutorial (1-2) "/> in the next photo, I closed the curtains and use a standard 60-watt household incandescent bulbs as my source: Figure - <wbr> a detailed tutorial (1-2)" ./> may be in the color picture projection surprise you, because we do not tend to perceive such a bright incandescent light yellow / orange. Our brains convert color to make them and a picture is similar, but .This time the camera is drawn in the right picture. Figure - <wbr> a detailed tutorial (1-2) "/> <em> tungsten illumination to see from the outside will be able to show its true colors, here it is .appears to be bright orange. .</ EM> as we stand on the open light is very blue shadow, a very similar situation to occur. .We perceive the light is neutral, but if we make way contrast, the shadow of the sun, the blue cast will be seen more easily. .There are many other strong color light projection: The fluorescent lamp is often green, street lighting is a deep orange, light yellow evening sunlight gradually changed from the deep red and so on ... Figure - <wbr> a detailed tutorial ( .1-2) "/> <em> shadow in the open light we perceive as neutral, but it will come out the shade of dark blue. </ EM> 3 point lighting, and why it is very fucking three-dimensional .textbooks often describe the classic 3 point lighting setup, and to encourage beginners lighting it as a valid way of their scenes. It is originated in photography a way of lighting, and it's a benefit is easy to learn and understand. .It consists of one side of a bright main light, a weak supplement in the opposite light, and used to highlight the edge of the prominent objects in the composition of the object behind the rear lights. This set the biggest problem is that it is intentional, .and does not reflect reality. After the lights only when you want to look for a special effect should be used only because it (the effect) is too artistic and highlights. After the light is very effective, but it should be identified to use, .rather than blindly applied in all cases. 3 point lighting to create a simple type of light does not exist in nature, so it looks fake. It is taught in many textbooks of this fact, but also give it the old .the concept means, it has become boring and uninteresting. In short it fell out of the beloved photographer and film director has been a long time, so you will be very difficult to photograph in the product or see it in mainstream films. If you want to .lighting, an environment or an object, then try lighting some of your own creative ideas would be much better, and to study what happens in nature, and then invent your own solution. Everybody saw that rely on .photographic studio lighting in the formulation Peugeot portraits: they all look exactly the same, because the photographer used the same lighting each time. The result is pictures of people dead tired, if you want your own art and to avoid .Peugeot style of old ideas and to ignore out of the textbook formula and independent thinking. Light - a detailed tutorial <2 Section "Part 2: The direction of the light we see a light in the direction it would be our perception, .on how the objects in the scene will have a profound impact presentation. Choose your main light to shoot from any direction you can do one of the most important decisions, because it will show what a scene, the image conveyed to you .emotions have an enormous impact. Front light: Figure - <wbr> a detailed tutorial (1-2) "/> where the light source is located directly behind the viewer point of view. .It is most common in flash photography, and if the light is very hard to see that it is often unattractive - and also some exceptions, in some cases, the soft light will bring the front very attractive image. .Front light on the apparent shape or texture with the help of small, largely because the shadows are hidden out of sight, and the results it can make objects appear flattened. .However, because of this reason, the soft diffuse light in front, under the theme can be very few people like, for this reason - it can help cover out wrinkles and blemishes, so the portrait and product photography is often used. .Figure - <wbr> a detailed tutorial (1-2) "/> <em> strong light has suddenly taken the front looks like: dazzling and often unattractive. </ EM> map - <wbr> a detailed .Tutorial (1-2) "/> <em> soft front cover of the form of light. .</ EM> map - <wbr> a detailed tutorial (1-2) "/> <em> front light can make a scene look flat, because it appears not good shape and texture. </ EM> Side .Light: Figure - <wbr> a detailed tutorial (1-2) "/" position light form and texture for the show is very good, bring a three-dimensional effect to the objects. .Shadow is a very significant and the result will be a strong contrast. .Side lighting is used to this surface such as a wall the shadow cast on the artistic and create atmosphere. .Generally speaking side of the light is attractive and often used in a lot of effect: it is the beginning and end of the day when the light type, in the film and photography in the same common. .Use side lighting potential drawback is that the shadow image in the region will lose, and it will show wrinkles of a class of defects. .For example, in portrait photography was used it more in men rather than women, because it looks very rough, especially when the edge is not a soft shadow. .Figure - <wbr> a detailed tutorial (1-2) "/> <em> side effects of illumination can be used in many forms and textures show up. </ EM> map - <wbr> a detailed tutorial (1 - .2) "/> <em> the texture of this wall is oblique to its sunset light revealed. .</ EM> map - <wbr> a detailed tutorial (1-2) "/> <em> this image runs through the long shadow cast give it the feeling of depth and dimension. </ EM> Rear Light .: Figure - <wbr> a detailed tutorial (1-2) "/> rear light is the viewer looking at the source, the object is illuminated side of the back and showed a sketch or we diffuse light caused by .dark lighting. .It is often a high-contrast situations, and often looks very atmosphere and artistic quality. .If the light source relative to the objects we look at a tiny point of view, there will show them one or more of the edge of the light side, the light, the stronger the edge of the more remarkable. .Rear lighting scenes often contain a lot of shadows, unless source is very soft. .Most of the time the image will be a significant pile of dark, there is the art of light. .This situation occurs in the shadow on the edge of the reflected light for the very useful form. .Another feature of this type of light is that it reveals a transparent, translucent and light along the edge of the subtle details. .This type of light for the image to bring art to be very effective. .Figure - <wbr> a detailed tutorial (1-2) "/> <em> rear light make even the most ordinary objects appear moving. </ EM> map - <wbr> a detailed tutorial (1 - .2) "/> <em> it is translucent display a very effective method. .</ EM> map - <wbr> a detailed tutorial (1-2) "/> <em> silhouette lighting effect behind the general characteristics of the scene. </ EM> Top light: Figure - <wbr> a detailed .Tutorial (1-2) "/> top light is a bit unusual, even though common in the cloudy daylight. .It can also be under the sun at noon, some of the indoor stage lighting and other circumstances, such as met. .Under the soft light it is a way to show a valid form. .Hidden in the bright light out of it because most of them below the projection and the art form to bring a mystery: for example, were located just below the light in the eye position in a black hole, because of their sockets all in the shadows .in. .I know light is rarely the top artists, but that is not that it should not be used. .For the cloudy daylight it is the most realistic settings to the sky as a huge diffuse light. .It is also more artistic atmosphere of an unusual case lighting scheme, in fact, it can be used for creating an uncomfortable feeling and not often seen. .Figure - <wbr> a detailed tutorial (1-2) "/> <em> the soft light coming from the top of the cloudy weather features. </ EM> map - <wbr> a detailed tutorial (1 - .2) "/> <em> lighting from above can give a character a troubled and sinister look. .It stressed the orbital bone structure and depth. .</ EM> the end of light: Figure - <wbr> a detailed tutorial (1-2) "/> If the light from above is rare, it is not from just below to do so even more unusual. If in the scenario nature .a person standing above the fire, or when holding a torch that might happen. reflector light also comes from the bottom, for example, from the water. It can give even the most familiar things obviously brought a strange look, because usually .see the next time will be reversed and dark (imagine a person with a torch in his face from the photo below: the shadow will appear upside down.) Again, it is rare that can be used to produce light effects. we instinctively identify .object does not seem right, which will be used to manipulate light to create a special mood, to convey emotion and response. Figure - <wbr> a detailed tutorial (1-2) "/> <em> the end of a very light .rare, but can be used to create unusual images. .</ EM> map - <wbr> a detailed tutorial (1-2) "/> <em> lighting from the bottom to create a character of a bizarre ghost-like look, and even the eyes of the high light and because they see the location of .it strange. Note the angle of light also strengthens the skin's texture. be it a picture on a comparison: the same face, but light was moved, but it looks completely different from each other. </ EM>.