[alcwsa]

Hi,

Please help and advice,

I don't have a chance to play with x5 or x8 Zoom camera. Under what situation the zoom really helps?

Is there really a big differece between x5 & x3 Zoom (Talking about optical zoom only)?

If I am taking a pic with Sony 717 & C5050 from the same spot, what will be the result of the output? Please help (it'll be the best if you can send some pic sample) Appreciate for the help.!!!

[ricer]

不妨上網找找或看那些鏡頭cateloge, 他們常會以不同焦距鏡頭拍攝同一景觀，以顯示不同鏡頭的效果。以35mm為起點計，5X和8X就像是200mm和300mm的分別了。

3X和5X分別多大.....假如鏡頭質素是一樣的話，當然5X更多用途吧。

[katoributa]

仲有要注意，當zoom得越勁，最大光圈相對越小。
例如5700平時係2.8，8倍後係4.2

[samho]

>>>zoom得越勁，最大光圈相對越小。
唔係一定，只係通常

以傳統光學的設計理念，三倍以上的變焦鏡是很難保證有高質素，所以以往出色的Zoom鏡大都是 28-70, 35-70, 70-200.......
不過，理論歸理論，數碼相都底有多少倚賴鏡頭來做到高質素呢? 個Firmware/Sofeware的影響似乎更大，鏡頭只要不太差就行了，反正CCD反映不了太多光學質素上的差別