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averythh923 wrote:
以上重炮手大大小弟只...(恕刪)
在下開頭回文只說聲遺憾, 沒想炮人. 至少閣下勇氣是有了, 所以請別哭啦
至少你可以知道這話題太敏感(加上標題真的有夠聳動),
沒有足夠的內容佐證你的主張就註定銼骨揚灰了
所以還是私下跟朋友當閒磕牙的題材吧, 沒把握的東西真的千萬別放01好
看到這還是只能再說聲遺憾
價格合不合理, 尤其是國內外差別待遇是否存在, 這應該有值得討論的價值
但顯然經過這次後恐怕很難有機會看到了吧？
倒是我也根本沒看過有人討論過, 頂多看到價格小譙兩句而已
算了, 反正還有熱心大大們分享消息, 往後還是繼續注意店家報價文了,
起碼這比官網掛的還有參考價值...
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jenhoxen wrote:
請教odyseuss大,把 F5 「變小」的內容在那啊?我點[這一篇]超連結進入只看到一隻雪橇狗說...
jenhoxen 兄你說的沒有錯，那一篇並沒有提到修改 F5，是我看錯了。
有提到修改 F5 的是 Tommy 在 dpreview.com 的討論中提到的（連結請見小弟樓上的回文），具體細節 Tommy 並沒有說，但他有提到把 F5 的五菱鏡拿掉，並且把軍艦部削短以便塞進原先設計的隔熱層，原文摘錄如下：其一：
Think of everything that can go wrong and it is tested to make sure it doesn't go wrong. Depending on how it is housed, cameras/lenses/flashes can be tested for EMI, survivability in a vacuum, sublimation, exposure to atomic oxygen, temperature extremes, etc.... It's a lot of testing and being gov, even more paperwork. Don't remember the numbers but you get the idea. On top of that, some of the old cameras/lenses may have had special housings or thermal blankets made for it, so changing the camera/lenses can mean a host of other engineering changes. It's more complicated than most people think. When we wanted to change the umbilical well cameras from F3s(IIRC) to F5s, instead of re-engineering the simple aluminum box it was housed in, we worked with Nikon to chop up the F5 so it would fit. It cost less than making and certifying a new housing!
其二：
As of 2000 at least, there was no test that I know of evaluating Canon lenses and faulting the flourite elements and your post suggests the flourite rationale for not using Canon as being in place "for years". At that time, the use of Nikon was due to the history of using Nikon. EVERYTHING flown has to be flight certified, there were a slew of Nikon lenses already certified and there was no compelling reason to swap out the entire system for Canon (despite my attempts) because the flight certification process is extremely slow and expensive. In addition, there were the custom thermal blankets and accessories already developed for Nikon gear. Also, there has been a good working relationship already established with Nikon (worked with them on a project where we needed a "shaved down" F5 w/o the prism). Then you also have the astronauts that have already been trained using the Nikon system. There are many reasons why they stayed with Nikon, none that I know of are because of ruggedness of the lenses.
You don't take a photograph, you make it. - Ansel Adams
