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January 29 Cloverfield
January 20 向前看,向后看(含电影spoiler)香港有部电影叫《向左走,向右走》,我们这里是向前向后看。 电影Deja Vu中,FBI为调查一次恐怖行动,采用Einstein-Rosen bridge原理观察时间差为几天(向后)的平行世界。在agent Doug的慧眼下,FBI终于在茫茫人海中找到了恐怖分子,然而当前世界中已经发生的灾难却无法挽回。Doug在调查中,发现自己已经深深喜欢上其中一个无辜的受害者Claire。在发现FBI的装置实际上可以将激光或是物体送到平行世界后,agent Doug毅然穿越时空隧道,为挽救另一个世界中Claire的生命。他渐渐意识到,实际上已经有一个来自时间上超前的平行世界的自己,做出相同的但是以失败告终的尝试,自己一次又一次的错过了或是没能领会另一个自己的提示。于是无数个自己一次又一次的回到过去,试图拯救向后世界中Claire的生命,究竟那次量子选择能够in favor of他,这个锁链究竟什么时候才能停止,我觉得都不是重要的了,因为这个构思已是这部电影的最大卖点。 尼古拉斯凯奇在2007的新片Next里是一位能够向前看,也就是预见未来的魔术师,但是只能是和自己有关的未来两分钟。只有当未来是和一位他一见钟情的女子有关的时候,他可以向前看得更远,他每天去那个餐馆等着女子的到来,因为他只知道事件发生的时间,却不知道事件发生的日期。至于FBI(少了FBI,估计好莱坞电影产量要减半)为了阻止一次恐怖分子的核恐怖,把他卷入进来,blahblah,就落入了俗套。好玩的是,电影可以进行了大半,尼古拉斯利用其向前看的特异功能,克服了重重困难,最后突然哗的一下回到几天前,原来一起还是尼古拉斯同学的预见,这电影拍的,干脆结尾也这样吧,不过导演编剧还没那个胆。所以我看向前两分钟还比较合理,否则这世界无数种可能性不停再产生无数种可能性,尼古拉斯的CPU处理的过来吗?其实就算是两秒钟,理论上也早就是无穷了。导演有一个地方倒是有点功力。尼古拉斯利用向前看两分钟,成功的躲过恐怖分子的一匣子子弹,导演将世界多种可能性视觉化,很有说服力。和Deja Vu不同,Next里没有平行世界,所有的不同可能性都只在尼古拉斯的脑中。 January 06 Panasonic Lumix DMC-FZ8 Noise-Reduction Test ReportI like everything about my Panasonic Lumix DMC-FZ8 except one thing. Its new Venus III noise reduction system. The dpreview says "excessive smearing of the chroma information" while "losing a lot of the fine texture (and causing color bleeding)". This is true. I did some experiments and confirmed this statement. Fortunately, FZ8 offers raw mode which is rare for non-SLR cameras. By using raw mode, you can skip the Venus III noise reduction system. The following photos were taken under same condition -- ISO 200, shutter speed 1/4 and on a tripod. I deliberately used the sub-optimal lighting condition because that's how we get noises :-). The first photo was taken by using all default settings. As you see, the right-top black area has red color bleeding. The second photo was taken by using low NR. As you see, it has less smearing and therefore sharper. But it still has red color bleeding. I will not post the high NR photo here. Just you know, it smears too much and I don't recommend using high NR setting. Lastly, I used Photoshop Elements 5.0 to process a raw photo. As you see, There is no more red color bleeding and the photo looks more natural. But I do notice a subtle blue color bleeding around the characters. Well, nothing is perfect. Overall, I would recommend using either low NR setting for sharper photos, or using raw mode if you have time processing it in Photoshop. I heard the newest model FZ18 fixed the color bleeding problem. Hope it is true. |
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