[ho1018]

我想問下正常曝光係....e.g. 1/60, F2.8........如果想得到同樣既曝光量, 咁係咪快門高一級, 光圈就要低一級呀? i.e. 1/50, F4?

thx for answering me^^

[tonytcc]

係 1/30, F4

[yiump]

有冇表睇

[ho1018]

即係光圈調低一級, 快門就要較慢3級呀?
thx^^

[kenwoo19]

我都想知...邊度可以搵到呢個表

[galenyip]

Take a look here:

http://www.uscoles.com/fstop.htm

I think that's what u are looking for :)

G-

to ho1018:
2 times 1/60s is 1/30s, not 1/50s.
i.e. 1/60 x 2 , 快門高一級 doesn't mean press the button on ur camera once.

[Canon Man]

我想問下正常曝光係....e.g. 1/60, F2.8........如果想得到同樣既曝光量, 咁係咪快門高一級, 光圈就要低一級呀? i.e. 1/50, F4?

absolute ans.
快門高一級> 1/30
光圈低一級> F4.0

if ISO dont change.

[ho1018]

咁如果ISO高一級呢? 光圈&快門又應該點較去得出同樣既曝光量呀?
e.g. ISO 50, 1/60s, F2.8 >>> ISO 100, ?, ?

仲有, ISO 既級數又係點分o架?
50 > 100 > 160 > 200??

thx for answering me^^

[micros]

X2 就一級。
例如:
100 --> 200
200 --> 400
就係一級。
似乎你既基本認識好少﹐多的去搵書睇下。
俾個 link 你。
http://www.nikon.co.jp/main/eng/photo_world/kumon/index.htm

[Velsper]

一級的分別:
iso: 25, 50, 100, 200, 400, 800, 1600 (x2)
光圈: 1.0, 1.4, 2.0, 2.8, 4.0, 5.6, 8.0, 11, 16, 22.... (約x1.4)
快門: 4", 2", 1", 1/2, 1/4, 1/8, 1/15, 1/30, 1/60, 1/125, 1/250, 1/500, 1/1000...(約1/2)

[ho1018]

thx先~

"咁如果ISO高一級呢? 光圈&快門又應該點較去得出同樣既曝光量呀?
e.g. ISO 50, 1/60s, F2.8 >>> ISO 100, ?, ?"

係咪應該 ISO 100, 1/125s, F2.8 或者,
ISO 100, 1/60s, F4呀?

micros: 多謝你個website, 好有用~!
Velsper: 睇完你咁詳細既解釋, 明白哂~!

thx all~

[Canon Man]

"咁如果ISO高一級呢? 光圈&快門又應該點較去得出同樣既曝光量呀?
e.g. ISO 50, 1/60s, F2.8 >>> ISO 100, ?, ?"

in, ISO100

1/60, F2
1/30, F2.8

understand? but i also recommend to read some books and experiment first.

[Velsper]

canon man
iso高了一級,
光圈應是可以收一級or 快門快一級啦 ^___^

[靚蝦后]

re: ho1018,

如果ISO originally 50, 1/60s, F2.8 then only adjusted ISO高一級, 光圈應是可以收一級or 快門快一級.

i.e. ISO 100, 1/125s, F2.8
或者 ISO 100, 1/60s, F4

hope u will understand.

[ho1018]

多謝哂大家咁有耐性同心機分享, 雖然依d係基本功夫, 但係小弟真係得益不淺^^

我會多d睇有關既書籍o架喇, thx all^^