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“真假难辨”的效果图如何打造,以一只笔为例(下)——渲染篇


上期独家教程,康石石带大家用Rhino完成了COPIC MULTILINER针管笔建模(复习请戳:独家教程 | “真假难辨”的效果图如何打造,以一只笔为例(上)——建模篇),下面我们把它丢进Keyshot渲染器里,看看究竟Keyshot究竟能不能打造真实照片一般的既视感。

Keyshot虽为各家晚辈,但近年来突飞猛进。有的同学说Keyshot渲染效果不如V-Ray,但我们可以看下本期独家教程内容再作判断。

基础材质赋予


首先我们打开 Keyshot

基本导入参数

导入后

由于我们事先在Rhino中,对各个部件分过色,所以我们可以直接,尽情把左边各种需要的材质球直接拖到需要的部件上
初步赋予材质后效果

特写效果

环境光赋予


Keyshot预设的材质显然不能够完全适合所需情况,且物体上的光线并不是很正确。因此同学们需要将环境光换成更加接近真实摄影棚的灯光场景

选用 3 Panels Tilted 2k作为的基本环境光,将环境光拖入环境里之后,效果如下:

模型各部材质赋予


由于光影的变化,整个模型已更加真实。接下来各部的材质还需根据实际的视觉情况手工调整以下是这次模型各部材质的参数:

 笔身主要的金属材质

黑色塑料件部分以及笔头的黑色

笔夹与笔头所使用的金属材质
Tip:金属材质是将Keyshot预设的钢材质的粗糙度调整为0.01而成。

握柄处的塑料材质
Tip:因为塑料的视觉特点,此处特地选用了半透明属性的材质做调整,除了表面颜色的参数之外,剩余的三个颜色区域均使用了R255,G255,B255的纯白

笔身标签渲染


在给各部赋予了材质之后,产品很重要的一个环节就是印刷于产品之上的各种商标与说明,在Keyshot中,这些效果可以很轻松的通过标签功能来实现。首先对实物上的印刷效果进行观察,可以看出实物上的印刷效果其实是比较立体的
Tip:细节,往往是产品品质的一种体现。在效果图的渲染中,也应该尽可能做好每一部分细节。

在使用标签之前,首先我们需要用Photoshop制作所需要的标签:
(标签与实物商用标签略有区别,以作区分)

Tip:对于标签,不需要的地方尽量抠干净,然后将标签储存在PNG格式(可以保存透明)的图片。

回到Keyshot,编辑需要贴标签部分的材质,选择标签一栏:

在标签栏中使用来添加标签。在色彩与凹凸区域都使用我们刚才制作好的标签图片。标签类型选择“油漆”,即可在凹凸一栏通过控制参数实现标签凸起效果。

调整后,我们的标签就会如同真实情况一样,立体了起来。笔帽上的白色“0.5”标签制作过程同理。

在做过以上调整之后,我们基本上就可以点击渲染按钮,选择自己需要的分辨率。开始让电脑进行渲染工作了。

白色背景渲染样张

灰色背景渲染样张

另外,Keyshot还有许多有趣好玩儿的效果值得同学们一试,比如景深效果:

Keyshot与Photoshop简单配合之后也可以迅速做到照片级别的拟真:

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