Vincent Laforet 的5DII视频已经放出!!!

[Riven]

http://www.vincentlaforet.com/
http://blog.vincentlaforet.com/

 

[6inch]

Awesome 1080P short film!!!

But did not tell what Lenses used.

 

[6inch]

Got it.

EF Lenses used:
FD 7.5mm f/5.6 (converted to EF mount)
EF 16-35mm f/2.8L II USM
EF 24-70mm f/2.8L USM
EF 50mm f/1.2L USM
EF 85mm f/1.2L II USM
EF 135mm f/2L USM
EF 200mm f/1.8L USM
EF 400mm f/2.8L IS USM
EF 500mm f/4L IS USM
TS-E 24mm f/3.5L
TS-E 45mm f/2.8

 

[Riven]

都是牛头

 

[Riven]

有个问题， 视频是30祯每秒， 也就是说快门要开和30次， 拍视频是不是会极大的减低快门的寿命？

 

[杨戬]

有个问题， 视频是30祯每秒， 也就是说快门要开和30次， 拍视频是不是会极大的减低快门的寿命？

貌似不是这样吧？据说是录制视频的时候，快门是一直开着的，倒是有人说，感光元件一直感着光，会影响寿命。
看介绍说是5D2 在录制视频的时候，依然是“照片优先”，就是说录制的同时按下快门就可以照照片。这样一来就矛盾了 具体什么原理还要观望一下

 

[garychan]

It's impossible for 5D2 to have 30 fps shutter speed. It must be electronic shutter (i.e. take samples 30 times per second). The CMOS sensor won't get any signal without power anyway. That means, shutter is not really necessary in DLSR. It's function is more like a protector to the CMOS sensor than a shutter.

DSLR is just like a black box. What users need to know is how to use it. They don't need to know how it really works.

 

[garychan]

One more thing... that's what makes Live View possible...

 

[Riven]

It's impossible for 5D2 to have 30 fps shutter speed. It must be electronic shutter (i.e. take samples 30 times per second). The CMOS sensor won't get any signal without power anyway. That means, shutter is not really necessary in DLSR. It's function is more like a protector to the CMOS sensor than a shutter.

DSLR is just like a black box. What users need to know is how to use it. They don't need to know how it really works.

学习了. live view的时候是提升反光板和打开快门的, 视频就是dump数据到卡上. 这样来说,对cmos的寿命应该是有影响的.

有个问题, 5D II 最高快门速度 1/8000秒,是什么限制它不能达到 30FPS呢?

 

[garychan]

It's the buffer size...

 

[6inch]

有个问题, 5D II 最高快门速度 1/8000秒,是什么限制它不能达到 30FPS呢?

5D II, 3.9 frames per second continuous shooting. Canon 最快的 1D mk III, 10 fps continuous shooting.

应该和 buffer, processors and shutter lag time有关。

 

[garychan]

Yes... it's totally dependent on the amount of information 5D2 can handle.