[大熊貓]

點解L鏡,好多用 2.8 / 4 做恆定光圈值?
2.8 / 4 會否有原因支持?
2.8 / 4 會否在鏡頭design上最好?
請問各ching有無研究?

[jsklee]

你當呢D鏡死嗎？

http://www.canon.com.hk/en/Consumer/Product/ProductDetail.aspx?product_id=100188&series_id=43

http://www.canon.com.hk/en/Consumer/Product/ProductDetail.aspx?product_id=335&series_id=43

http://www.canon.com.hk/en/Consumer/Product/ProductDetail.aspx?product_id=343&series_id=46

http://www.canon.com.hk/en/Consumer/Product/ProductDetail.aspx?product_id=100144&series_id=46

http://www.canon.com.hk/en/Consumer/Product/ProductDetail.aspx?product_id=10010&series_id=47

http://www.canon.com.hk/en/Consumer/Product/ProductDetail.aspx?product_id=100153&series_id=47

http://www.canon.com.hk/en/Consumer/Product/ProductDetail.aspx?product_id=357&series_id=48

http://www.canon.com.hk/en/Consumer/Product/ProductDetail.aspx?product_id=360&series_id=49

http://www.canon.com.hk/en/Consumer/Product/ProductDetail.aspx?product_id=10290&series_id=10030

http://www.canon.com.hk/en/Consumer/Product/ProductDetail.aspx?product_id=10256&series_id=10030

http://www.canon.com.hk/en/Consumer/Product/ProductDetail.aspx?product_id=10036&series_id=41

http://www.canon.com.hk/en/Consumer/Product/ProductDetail.aspx?product_id=319&series_id=41

[@ZETA@]

佢用"恆定", 我諗佢係講zoom鏡....

[大熊貓]

Ching 唔洗咁呀，都係問下姐。
我以為2.8 & 4 L，光學上用係Zoom鏡上會好Ｄ姐
唔該ＺＥＴＡ．．．

[afriwong]

大過2.8大支到你唔想用…細個4我諗冇人買…

[pongyee]

大過2.8大支到你唔肯拎…細個4我諗冇乜用…

XD

[50D]

I want to know too...

[pongyee]

舉例：

EF 300mm/F4L IS USM 重 1190g 定價 $11xxx
EF 300mm/F2.8L IS USM 重 2550g 定價 $38xxx

咁你估計下大過 F2.8 會幾重及幾多錢？
俾個數字你參考： 200mm， F2 o既價錢幾乎係F2.8 o既十倍。

細過 F4 o既話，價錢唔可以太接近普通鏡，又唔可以接近 F4，又會太多鏡在同一個焦距，不如唔做好過。

純個人意見，唔知佳能係咪咁諗。

[xdick]

pongyee ching 分析得幾好~
如果可以舉一d zoom lens既例子咁就更好啦~

[Douglaschow]

--- Deleted by Admin ---

請勿於討論區發表粗口字眼，多謝合作!

[pongyee]

>> 如果可以舉一d zoom lens既例子咁就更好啦~

玩過 EF 24~70/F2.8L o既都知佢貴過同重過 EF 24~105/F4L (950g $10xxx 對 670g $8xxx)，有幾多影友俾得起又有興趣捧住支 24-105/F2L 呢？

24~105/F5.6L？ 你要埋我果份。

[panda727]

wow
Thanks pongyee , a good analysis.
you are right larger than 2.8 the price & weight is very horrible.

=.=" it's also due to marketing, product strategy .......




Hey Douglaschow HAHAHA Thanks~~~
Jsklee just want to tell me there are other lens.
That's ok ^^

[@ZETA@]

以我所知Olympus有兩枝F2.0嘅zoom lens, 我都好想買, 不過好貴.....
1) 14-35 F2.0 weight 900g US$1699
2) 35-100 F2.0 weight 1650g US$ 2280

[jsklee]

皇帝唔急太監急

[levinchu]

@Zeta@+"pongyee"呢D先叫做真師兄！有心有料又有品！欽敬欽敬!! ^__^