光線 LIGHT

Pixar: Art and Design

皮克斯：藝術與設計

Bill Cone 比爾．孔恩

source : http://pixar20.blogspot.com/2009/08/blog-post_10.html

在汽車總動員Cars － 這部場景幾乎發生在戶外的動畫片，需精準地表現光的變化，除了用粉彩做光線研究，改變他看待光線的向度外，Bill更將攝影機架設在山上，紀錄一天24小時的天空色彩轉換的連續影像，觀察地球陰影、物體直接光照與折射受光之下的色彩變化與亮度，也發現大自然的美是超越想像的。然而日光只是各種光源的其中一種，還須區分螢光燈、街燈、車燈的差異；一種燈光與多種燈光的交互作用；車燈照射在街景的亮度呈現的遠近感；室內室外的光線、白天夜晚的改變等，再將這些細微的變化表現在彩色腳本colorscripts中，呈現整體感與和諧的漸層與明暗。

Occurs nearly in automobile general mobilization Cars - this scene in the outdoors animated cartoon, must display the light accurate the change, except uses the famille rose to do the optical fiber research, will change him to regard the optical fiber to beyond consideration, Bill the camera framework will be located on the mountain, records continual phantom which one day of 24 hour sky color will transform, will observe the Earth shadow, the object direct illumination and the refraction the light under color change and brightness, also discovered that the nature US will surmount the imagination. However the sunlight is only each kind of photo source one kind, still needs to differentiate the fluorescent lamp, the street light, headlight's difference; One kind of light and many kinds of light correlations; The headlight shines in vista brightness presents far and near feels; The indoor outdoor optical fiber, the daytime night's change and so on, displays again these slight changes in colored script colorscripts, presents the associative perception and the harmonious gradually level and the light and shade.

除了真實物件的光影變化，他們也做出角色和場景的雕塑，光線照射在陶土雕塑上的產生明暗對比，幫助他們進行更細部的觀察，而建造雕塑來模擬光線配置，不僅能獲得想要的效果，花費的成本也比電腦低。

Except the real thing's light shade change, they also make the role and the scene sculpture, the optical fiber shine in the pottery clay sculpture the production light and shade contrast, helps them to carry on the detail observation, but constructs the sculpture to simulate the optical fiber disposition, not can only obtain the wish the effect, the expenditure cost is also lower than the computer.

縝密的觀察得到的光線研究只是安排場景色調的考量因素之一，還需同時反映故事主角的心情，即便在相同的時空之下，一旦麥昆McQueen的心情轉變，也須做出不同的安排。也因此每一場景的色彩搭配，都是經過精心的規劃與安排，Bill認為使用色彩傳遞訊息是最強而有力的方式。

The meticulous observation obtains the optical fiber research only arranges one of scene tone consideration factors, but must simultaneously reflect the story lead's mood, even if under same space and time, once wheat elder brother McQueen mood transformation, must make the different arrangement. Also therefore each scene's color matching, is undergoes the careful plan and the arrangement, Bill thought that the use color bush telegraph is the most powerful way.