海洋珊瑚的“慢”生命(支持原画)

2015-10-16 18:40
搬运自Vimeo,真正视频和大自然的搬运工= =
海洋,一个令人心驰神往的地方,那里的生命又是怎样的呢?
大自然很奇妙,万物皆有灵。



这里用高放大率镜头展示了海洋动物的神秘“慢”生命。珊瑚和海绵铸造的珊瑚礁,它们在生物圈中扮演着十分重要的角色,然而我们对它们的日常生活几乎一无所知,这些动物实际上是移动方式非常特别的生物,它们的运动需要一个在不同时间尺上才能被我们发现例如延时摄影。
你可以在大屏幕上观看这个视频。这个视频是全高清,这个视频是在UHD(4K)模式下制作的。
一个常见问题的:是的,颜色是“真实”的,而不是夸张的数字增强。我们只应用了基本的白平衡校正。然而,我们用了专门的灯来模拟水下光环境,当摄影师对珊瑚使用白光(人造光),它们只是错过了绝大多数的颜色,珊瑚拥有极为敏感的光感受能力,这使它们可以被运用到荧光材料中。
序列/视频片段记录的时间从20分钟到6个小时以上不等。
——技术细节——
为了制作这个视频我们用了150000次拍摄。为什么这么多呢?因为微距摄影景深浅,我们运用了焦点(景深)合成和去模糊算法。视频的每一帧实际上是一个堆栈,它包含了3-12次拍摄。
只有开篇和最后的场景时真实时间素材。一帧需要10分钟时间来处理(raw格式处理+堆栈+在一些场景中的反褶积)不幸的是,成功率很低。由于有大量的技术挑战,我们花了近9个月才走上正轨。
设备:
多个佳能单反相机(1台报废)
镜头:佳能 MP-E 65mm 一个自定义的大型摄影装置(自定义镜头能更好的适应此类摄影)
灯:可调光频谱灯(3个不同的型号)-它们需要重新创造水下自然照明。
分几个阶段,包括设置滑轨轨道及焦点合成。然而划归轨道,并不能达到100%配合超长时间的延时摄影。
多台计算机来处理22+多路传输raw图像以及集中堆栈(一台旧笔记本电脑在连续工作3周后报废)
音乐: Atmostra III by Cedric Baravaglio, Jonathan Ochmann Zdravko Djordjevic.
查询/授权/新闻:找到我们的联系方式bioqueststudios.com.au/
有关使用我们视频的更多信息:
bioqueststudios.com.au/image-and-video-use/
请支持大堡礁的保护工作:
secure.marineconservation.org.au/donate.php?campid = 701900000006kqx)

原文:

"Slow" marine animals show their secret life under high magnification. Corals and sponges build coral reefs and play crucial roles in the biosphere, yet we know almost nothing about their daily lives. These animals are actually very mobile creatures. However their motion is only detectable at different time scales compared to ours and requires time lapses to be seen.
bioqueststudios.com.au
Make sure you watch the video on a large screen. This clip is displayed in Full HD, yet the source footage (or the whole clip), is available in UltraHD 4k resolution for media productions.
The answer to a common question: yes, colors are "real" and not exaggerated by digital enhancement. We have only applied basic white balance correction. However, we used specialized lights to mimic the underwater ambient spectrum. When photographers use white light (artificial spectrum) on corals, they simply miss the vast majority of colours. Corals have spectrum-sensitive colouration due to fluorescent pigments.
The duration of sequences varied from 20 minutes to 6+ hours.
=== Technical details ===
To make this little clip we took 150000 shots. Why so many? Because macro photography involves shallow depth of field. To extend it, we used focus stacking and deconvolution algorithms. Each frame of the video is actually a stack that consists of 3-12 shots.
Just the intro and the last scene are regular real-time footage. One frame required about 10 minutes of processing time (raw conversion + stacking + deconvolution in some scenes). Unfortunately, the success rate was very low due to copious technical challenges and we spent almost 9 long months to get it right.
Equipment:
- Multiple Canon DLSRs (1 camera died)
- Lenses: Canon MP-E 65 mm lens, and a custom photomacrography rig (custom lenses are better for this type of task)
- Lights: adjustable custom-spectrum lamps (3 different models) - they were needed to recreate natural underwater illumination.
- several motorized stages, including StackShot for focus stacking. StackShot, is sadly not 100% reliable for long-term time lapses.
- multiple computers to process thousands of 22+ Mpx raw images and perform focus stacking (an old laptop died on that mission after 3 weeks of continuous processing).
Music: Atmostra III by Cedric Baravaglio, Jonathan Ochmann and Zdravko Djordjevic.
=== Sharing/Use ===
Inquiries/licensing/press: find our contact details bioqueststudios.com.au/
More information about using our videos:
bioqueststudios.com.au/image-and-video-use/
Please support the Great Barrier Reef conservation efforts secure.marineconservation.org.au/donate.php?campid=701900000006kqX)

原文地址:https://vimeo.com/88829079
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