[eddytsui]

Hi
各位師兄,請問加了sigma 2x tele convertor , 相片quality 會否差了很用?
本仁是用 Sigma 18-50 2.8., 光圈是否會縮兩級?

多謝指點!

Eddy

[wlachan]

>相片quality 會否差了很用?

是。

>光圈是否會縮兩級?

是。

TC 不宜用於廣角。

[eddytsui]

wlachan師兄
1) 會否比sigma 18-125 更差?

2)why不宜用於廣角?

多謝指點!

Eddy

[wlachan]

1) 不知。
2) TC 原意是設計給高質素的長鏡用，尤其是定焦。小弟認為買一支長變焦比較實際。

[schindlerdennis]

sigma 2x tele convertor + Sigma 18-50 2.8

不如用sigma 24-70 實際D

[eddytsui]

我主要是用18-50,但去travel 可以間中用50-100ma,又唔想帶多一支lens

[twbchang]

Sigma 2x 都要 千幾, 而鏡也有一個拳頭般大, 不如買 70-300mm macro 那支鏡, 價錢也差不多, 重量約 2個 2x TC 那麼重, 但多支鏡用, 又可玩 macro。

[ckn]

Previously I had applied a Sigma 2X tele-converter to a Sigma 50-500 lens, but the quality was not acceptable. Perhaps, a 1.4X tele-converter is more appropriate.

[foto_man]

可看看哪一鏡頭可用teleconvertor

http://www.sigma.net.tw/index-6.htm

[kingkonghk]

2x唔係好值得買, 用左同未用差好遠, 成像相當唔掂, 建議用1.4x

[eddytsui]

I am considering 1.4x with 18-50 2.8
or buy 18-125
Thanks for 各位大師

[tam_dominic]

" I am considering 1.4x with 18-50 2.8 "
I have both.
Both 1.4x and 2x cannot use on 18-50 2.8.

[tyuen]

Why don't you check the link from foto man?

[eddytsui]

Thanks