新進會員
|
什麼觀念？？這樣問不太清楚耶！
定焦鏡輕便畫質好光圈較大，變焦鏡方便，光學性能通常較差，操作上沒什麼不同，只是多一個變焦環或可以推拉，不過大部分變焦鏡沒有景深表，如不是恆定光圈光圈值不同焦段會變化，不過機身測光表會處理，使用上沒什麼困擾。 |
新進會員
|
最明顯的差別是，
用定焦鏡要改變構圖框大小時，你必須走動雙腳去靠近或退後，
用變焦鏡直接改變焦距即可...
定焦變焦各有好壞，
我的習慣是買二顆鏡頭，
一棵最常用焦距的的定焦加上一棵能補足其他偶而會用到的焦距 |
部落格(6)
新進會員
|
操作技巧在變焦鏡上是存在的,如畫面曝光進行中作zoom的動作.
此處話題談的並不太明確;重點似乎擺在拍攝上的"實務"運用.
雖然拍攝經驗並不多,也來說說一點點看法,或能得到正面指正.
就拍攝主題來說,拍攝位置的判斷理應由肉眼先作決定,再交由鏡頭來完成.
此時,定焦鏡頭幾乎難以符合構圖的期望,前後移動位置雖能完成,但有時空間不允許,再者,拍攝點的改變造成畫面的透視感也跟者不同,這就有違原先想要的結果.因此,變焦鏡的多焦段能輕易達成原始觀點.若注重畫框取捨勢必也得一併看重變焦鏡頭.
然而,定焦鏡也能因應拍攝觀點而"定"在取景位置,但須累積鏡頭視角的觀察經驗,構圖受限的影響才會降低,若不以預定畫面來表現,定焦鏡反而會因拍攝點的移動產生相當多的變數,拍攝過程中不斷挑戰作者的反應,劣品可能因而增多.佳作機會相對大增,運用之妙存乎一心...難喔! |
新進會員
|
- Most people seem only to differ the zoom and fix focal by simply their operation and framing. The real point is that using zoom, a photog is usually not aware of the framing. Instead he/she just point, zoom and try to get a fix on the scene ( in another work, they hunt for it ). While veteran Fix-Focal user require a different approach. With fix-focals. the photog need to be able to visualize the framing and scene before even pointing the camera and focus. In a word, using Fix-focal teach and demand the photog to concept his/her picture first in their mind. A long lasting habit dated back when the camera is not so conveniently sized.
The need to walk back and forth for a fix focals is only an end result of the photog not yet familierize with his lens or he"s trying to use his Fix focal like a zoom. Likewise, a Zoom user who take the time to ponder the scene are behaving as if he/she is using a fix-focal .....
So in usage and techniques, the photog can decide upon shooting environment and choose to utilize the most appropiate or needed method |
新進會員
|
謝啦~ 看來真的需要現場練習才知道
越聽越害怕 感覺大家的鏡頭組蠻多的 ^_^"
看來先把Pentax的鏡頭都稍微了解一下 會比機身的了解更重要 ~
謝謝各位 ~
|
新進會員
|
This is no problem of usin zoom to find the actual frame before our brain think of. The only concern is how effective and accurate be a zoom to replace prime lens in framing and positioning. I still don"t think any prime is ever better than zoom in this issue. I know visualization and how important it is. But then, 條條大道通羅馬. Focus on the picture itself is a lot better focus on gear.
Step back and front is another issue, it is perspective. No matter zoom or prime, you still need to control this issue. At this point, zoom is still better as it can fine tune and track the object size to get precise background control.
All in all, zoom doesn"t mean lazy. Lazy is what human does, not the lens.
|
新進會員
|
用劍論器，定焦鏡要用得好，必須〝意在劍先〞，用劍者先有〝劍意〞，然後劍到腳到，卡、卡、卡，快、準、狠，才會不失差錯。使用變焦鏡，如果事先毫無〝劍意〞，感覺不到對手的空門，用劍只會忽前忽後的到處亂瞄亂砍，運氣好時，當然也會砍到好作品。 |
