[johnyu]

本人想學?用 WIDE 鏡影野, 請問怎樣選擇D變焦倍數, 例如 0.5, 0.66 or 0.72, 請問各位 bro 這些不同的變焦倍數該在什麼情況下使用. 謝謝 ... !!

[Excalibur0991]

一般人好少會將幾種唔同倍數幾wide adaptor 統統買齊. 只要係好用既, 一個就夠.
不同品牌, 不同倍數既wide adaptor 既品質有異 (在暗角, 變形方面). 我自己就唔鍾意用, 可免則免. 一來自己懶得成日扭上, 扭落, 二來用wide adaptor之後通常都用唔到偏光鏡.

[johnyu]

using a CPL filter with double-side threads, you can still use wide len, but the black corner effect will become more serious.

[Excalibur0991]

exactly.

[johnyu]

Yes, but it can be compensated by zooming forward a bit. I can still capture pictures wider than normal.

[笑天涯]

One thing want to point out ...pls take care of the curve distortion in the wide lens (wider the lens, more serious distortion will be the result).
It is especially for taking photo with angle against the horizontial line.

[Excalibur0991]

既然用得wide adaptor就係貪佢視角闊d, 如果之後又要zoom番埋, wide得果些少, 影像質素又差左, 仲要搞咁多野, 值唔值先? 仲有呀, 用左wide adaptor之後就上唔到遮光罩, 要自己?野遮光, 又係煩.

另外, 同意笑天涯兄所言, 所有市面上既wide adaptor都有桶狀變形既情況, 只係程度既問題.