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发烧友有奇技,花两周拍摄製成高对比月亮 - 天
2020-04-22 14:24天博入口
【天博官网】

文:Alex

摄影师 Andrew McCarthy 想製作一张更有质感的月球照片,于是想出了一个很特别的方法:他在自家后院花了两个星期拍摄月亮,然后把有用的部分剪裁出来再重新拼合,结果创造出以下这张具有高对比特色的月亮照片。

 
 
 
在 Instagram 查看这则贴文

Oops... All terminator! I haven't posted in a while, partly because I was under the weather, and partly because I was working on this BEAST of a project. This moon might look a little funny to you, and that's because it is an impossible scene. From 2 weeks of images of the waxing moon, I took the section of the picture that has the most contrast (right before the lunar terminator where shadows are the longest), aligned and blended them to show the rich texture across the entire surface. This was exhausting to say the least, namely because the moon doesn't line up day over day, so each image had to be mapped to a 3d sphere and adjusted to make sure each image aligned. I may or may not try this again for the waning phases depending on feedback. The full size for this, as well as a phone background, was shared with patrons. Check the link in my bio if you'd like to join and get access to more exclusive content!

【HK$68 入手最强执相软件】立即下载 Photoshop CC + Lightroom CC

Andrew McCarthy(@cosmic_background)分享的贴文 于 PDT 2020 年 4月 月 14 日 下午 6:48 张贴

McCarthy 留意到,在月亮亏盈的过程中,明暗区域之间的交界位置,是火山口和山脉等地形影子最长的地方,可以提供最丰富的细节。于是他花上两个星期,把月亮由亏转盈的全个过程拍下来,然后利用 3D 软件和 Photoshop,把明暗区域交界位置裁切出来再重组成一张照片。


▲McCarthy 只选用明暗区域之间的交界位置合成月亮相片。

不过,由于月亮在轨道上运行时会出现轻微的「摇晃」,因此要将前后两个晚上的照片对準其实并不容易。他需要改用另一个较为複杂的方法:将影像映射到 3D 球体模型上,然后进行调整和补偿抖动,再经过渲染与影像混合步骤製成照片。


▲McCarthy 作品的局部放大图。

摄影师说:「一旦把色调调整妥当,整个影像就会显示出很强的深度 。」McCarthy 的原相是用 ASI1600MM 天文摄影用相机和 edgeHD 800 天文望远镜拍摄。有兴趣的影友可在他的 Instagram 找到更多天文照片。

来源:PetaPixel


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