[PPYeung]

Why 定焦鏡 is better than 變焦鏡 when taking pics with people?
I am using D80, which 定焦鏡 is best suit??

[barryspc]

有D高級的zoom鏡也可比美定焦鏡了，但有一點zoom鏡還未做到的就是大光圈如F1.4 to F2

如你喜歡拍人像 可看看 Nikkor 50mm 1.8/1.4, 85mm 1.8/1.4

outdoor 可看看 105/ 2, 135/2, and 180/2.8


我也recommend zoom AF 80-200 2.8 (LB3) or 70-200 2.8 (LB5) 拍人像好正

[manpo79]

因為定焦鏡,不用變焦,鏡頭設計簡單好多
多一片鏡頭就多一個損耗,所以定焦成像多數較好

[manpo79]

多一塊鏡片就多一個損耗,所以定焦成像多數較好

[uea]

多一塊鏡片就多一個損耗

Nikon ais28mm f2.8 鏡頭結構(8組/8片) 比 AF 28mm f/2.8D 鏡頭結構(6組/6片) 好得多

[manpo79]

損耗一定有,多兩塊鏡片透光一定少左,所以ais 28mm 鏡片要求又高左

[PPYeung]

Thanks all, i am new on taking pics, i only get kit lens now. What are the prices for 50mm 1.8/1.4, 85mm 1.8/1,4?
Do u have any website that can teach how to take pics? Thanks a lot.

[小班長ErikoB]

多一塊鏡片就多一個損耗

Nikon ais28mm f2.8 鏡頭結構(8組/8片) 比 AF 28mm f/2.8D 鏡頭結構(6組/6片) 好得多
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只係其中一環.重要睇埋光學design..

[barryspc]

話時話好小見有二手AIS 28mm 2.8

唔知咩行程

[barryspc]

http://www.ygdragon.net/index.php?page=photo/cameraprice.htm

[vaworld]

用多少鏡片睇設計而定. 多d鏡片係用來矯正光學問題.
亦有會用兩片較平鏡片取代一片較貴, 非球面鏡, ED鏡 ... etc.

但e+ 就傾向少鏡片(以同一光圈/焦距), 因為 非球面或者ED鏡成本低左好多, 同時機械設計較簡單亦可減低成本.

但Zoom 比定焦多咁多鏡片就無可避免有一定損失.