凯旋门内的满月
The Moon through the Arc de Triomphe
Image Credit & Copyright: Stefano Zanarello
Explanation: Was this a lucky shot? Although many amazing photographs are taken by someone who just happened to be in the right place at the right time, this image took skill and careful planning. First was the angular scale: if you shoot too close to the famous Arc de Triomphe in Paris, France, the full moon will appear too small. Conversely, if you shoot from too far away, the moon will appear too large and not fit inside the Arc. Second is timing: the Moon only appears centered inside the Arc for small periods of time — from this distance less than a minute. Other planned features include lighting, relative brightness, height, capturing a good foreground, and digital processing. And yes, there is some luck involved — for example, the sky must be clear. This time, the planning was successful, bringing two of humanity’s most famous icons photographically together for all to enjoy.
Today’s adventure link: Click “Paris” (above)
Tomorrow’s picture: open space
凯旋门内的满月
影像提供与版权: Stefano Zanarello
说明: 这是一帧幸运之作吗？尽管有许多令人赞叹的照片，是由恰巧位在对的时与地之人所拍摄的，不过要取得这帧照片则需要技巧和周密的计划。首先是张角：如果拍摄点离法国巴黎著名的凯旋门太近，满月看起来会太小。相反的，如果从太远的地方拍摄，月亮看起来会过大而塞不进凯旋门里。其次是时间：月亮位在凯旋门中央的时间很短，以拍下此图的地点来说不到1分钟。此外，还有许多其他计划细节得考虑，包括照明、相对亮度、高度、前景是否上佳及后续的数码处理。当然，拍照也需要一些运气，例如：天空一定要清朗。这次的计划大获成功，把人类最著名的两个标志以摄影的方式聚集在一起，让所有人的共赏。
今日探险链接：点击“巴黎”（上方）
明日的图片: open space
