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請問小朋友或寵物向著你跑來要如何對焦?


9 r+ s, }( f! d3 }1 u3 M如題,昨天天氣很好,拿著我的相機與小朋友出去玩,發現小朋友向著我的方向跑來的相片大多脫焦,我是拿 E-30 配 50-200 swd,單點對焦與 s-af,對焦速度已經算是不錯,請問各位有比較好的對焦方式嗎?我曾經試過 c-af 結果慘不忍睹,因此 c-af 從此被我打入冷宮不列入考慮。E-30 的連拍之間會重新對焦嗎?如果會的話那下次試看看成功率會不會比較高。

S-AF不會, 半按合焦後就鎖住了, 連拍也一樣.
% V# j9 m+ e9 }$ a) G/ n  Y要可以每張之間對焦就得用C-AF... 但是, E5之前的C-AF真的很慘.
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或許可以試試看O大的"腳法", C-AF時人也隨著被拍攝的人物移動.
& m( }5 A8 K% f(像是小朋友跑來, 就邊後退邊拍), 成功率可能會高一點點.

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E30 的 C-AF 慘不忍睹,就算拍不會動的東西也會脫焦,成功率非常怟,就算設定合焦才釋放快門也一樣。看起來這個對焦系統只有單點對焦可以用,E-5 不是與 E3、E30同樣的對焦系統嗎?E-5 的 C-AF 可以用嗎? 還是又只是裝飾品?

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SAF+MF、CAF+MF也可以試看看
書癡文必工,藝癡技必良

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要不要試用拍飛鳥的方法, 先將對焦點手動轉到主體後方(如果可以轉的話), 用 S-AF+MF 應可對到一張, 連拍就沒試過, 供您參考

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嗯,下次試試看 S-AF+MF,機器不夠聰明只好靠人的技術去解決了。O大的"腳法"不敢試,背後沒長眼睛,撞到人就糗大了!E-5 的 C-AF 到底有沒有改善?

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沒實際用過不敢說, 但是O大在發表會上有拿敝貓的"餅乾鏡"CAF連拍, 看起來是有進步.
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有E-5的人是否可以幫忙試試看,用C-AF半按快門對焦於一個固定的點,是否還會來回反覆對焦?就是這個反覆對焦的動作讓E-30的c-af變成裝飾品,一點實用價值都沒有,對焦成功率趨近於零。

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RE: 請問小朋友或寵物向著你跑來要如何對焦?

tomchang 發表於 2011-2-7 20:07 [url=forum.php?mod=redirect&goto=findpost&pid=129790&ptid=17977][/url]; ~; J# R; |1 c8 ]" G
有E-5的人是否可以幫忙試試看,用C-AF半按快門對焦於一個固定的點,是否還會來回反覆對焦?就是這個反覆對 ...

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E30的C-AF真的這麼爛哦??我一直以為是我功夫太差…

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本帖最後由 piko6821 於 2011-2-9 02:37 編輯
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我拍狗時用過一種方法...就是先找個東西先對好焦(比如小朋友離你2尺..那就找個兩尺的東西對好焦)然後轉MF(我的FN鍵是切換鍵)..等狗或是小朋友跑進你的焦點內就拍..7 F5 j& C+ L' V: ^; r
我稱之為"自投羅網式對焦法"~~阿哈哈...不過快門得快一點就是了...1/125以上為佳
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7 y, W# Z# S+ u* Y; u' P這張就是這樣拍的..頭進來了所以頭清楚了@@": P$ ~% [5 t0 a: F

) N$ {7 i$ x# t" t" w我沒用LV..用盲拍的方式..感覺有點像開車時得自己感覺車子輪子壓到那裡了..或是保桿是不是快要撞到了那種感覺..
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問君能有幾多愁~恰似一群太監上青樓~
E-620+SP550~UZ

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應該不單是e-30有這個問題,e3應該也好不到那裏去,畢竟是同一個對焦系統,因此我很好奇也是同一對焦系統的e-5到底改善多少?

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E-30跟E-3我都沒用過,E-5在光線充足的地方,C-AF是沒問題的!!不過若是在室內較昏暗的地方,連S-AF都很弱了,C-AF自然也就廢掉了...

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嗯...那只好跟小朋友玩一二三木頭人...這樣總拍的到了
E-1 & E-3 & E-5 & L1& EM5

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Hi,
! `5 I+ }( m4 o$ y! m" eI also use E3+50-200mm for many sports. It is not as bad as you think. the successful rate from my experience is about 30% (3 good pictures out of 10 shoots). I have tried canon D40 and nikon D200 with 70-200mm F2.8. It may feel just a little bit better.' K% ?! j  B9 N# q; h/ ?

8 K8 |3 @! N( _; H( PC-AF is the only, easiest, and the best choice for action photography. On the ohter hand, this system is too good to get it right. That's why it is the world fastest focusing camera (E3+12-60mmSWD close to E30+50-200mmSWD). That's why people rarely use M mode but only P, A, or S mode.$ T' k0 t0 F% d4 Z# `

" h4 m; F( g% F7 }3 N6 kIn addition I use spot AF-s (small) in the single center spot for accurate detection. This combination is quick and sensitive. Quickness: You can have a person walking through between you and the focused subject. You will see how quick it focus to that person and then focus back to the subject again after the person walk away. Get used to the rythem. Sensitivity: It can focus to just one piece of falling snow in front of my subject and only that piece of flake is sharp. It happened to me many times. In addition, it will focus through the moving subject's body and focus to the background (you can tell it immediately by review it).% R' j# {/ B9 }6 o: d& @9 u8 t
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Please check my post "[E30] Game Time!!! " at 人物.婚禮.寫真 (first page). I may put more post about sport later on and please watch them :-)! x* w! D5 X. }2 p4 M- ~7 t& t
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If I can do that you can do that too! All you need to do is practice and practice and figure out why you cannot success it and find the problem such as shutter speed? monopod/tripod? light condition? distance? ISO100 or 1600? aperture F2.8 vs F8.0?
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Good luck :-)4 }) D: E) {- K' U# b

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回復 [url=forum.php?mod=redirect&goto=findpost&pid=130011&ptid=17977]ching43202 的帖子[/url]9 M5 O' g6 B6 Q! G* N6 V3 D
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Ching43202,
4 i: y" a7 R. j* D+ H4 d  bThanks a lot for sharing your great experience. Looking forward more information from you.
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I just post the swimming pictures yesterday and they are all fast fowarding or backwarding to me! Please enjoy!/ x; S8 I% O( @/ Q: v

& v/ q2 z4 k3 n) W& e: V0 M$ _Happy lantern festival!

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I have very bad experience on C-AF with my e30. The issue is not sensitivity and quickness. The issue probably is the accuracy. It some times does not perform what you expected.
4 ]( U7 ~7 O/ n" e, gI shot a butterfly with c-af, focus priority. I got 0% success. The focus moved back and forth rapidly, but it gave me OOF pictures. S-AF is more reliable to me. At least it is more expectable if the object is not moving toward me too fast.

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回復 [url=forum.php?mod=redirect&goto=findpost&pid=130125&ptid=17977]tomchang 的帖子[/url]
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For still butterfly I would also use S-AF.
1 j) s6 L& P7 e) [, J" b, OFor flying butterfly or bee you can still use S-AF but with smaller aperture such as F5.6~11 for longer DOF to increase success rate. It is very difficult to use any focus system on flying bugs (small size and unpredictable flying direction). Even with human eyes we hardly track the flying fly or mosquito, isn't it?  The trick to take the picture of flying bug is the time when they about to land or leave from a subject (flower). You have more time to focus on both the subject and fly then. It doesn't matter the C or S-AF you use at that time. 1 |; K# [6 h; |. Y
Another trick I learned from the magazine for the moving subject. You use C-AF but half push the shutter as many times as possible for refocusing while tracking the subject. This will contain both function of C-AF and S-AF to reduce the missing rate. The camera may not be quick enough to recalculate the right distance of bug in C-AF. You may need to practice on slow moving huge subject such as car or airplane and then challenge the flying bird.
* A0 v" \+ z/ D/ V* q' x2 }9 g2 S# B) PAgain, familar with your camera and then practice, practice, and practice.5 F4 z" |7 W( P
This is my personal opinion and someone else may give us more creative trick!; \- y4 c" |$ ~: H& I, N

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MF 一邊轉對焦環一邊連拍, 總會拍到幾張吧..

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本帖最後由 firecowgod 於 2011-6-25 08:22 編輯
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本人也是用E30的, 他的c-af的確不行. 但是要拍小朋友或寵物向著你跑來並不是絕望的...
- T5 L, A+ P8 B我用一些小技巧也可以拍攝以下相片的...(成功機會都好高的 ^^): V! }& ^3 P; Q
E30 1454 5.6F
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: z$ J; I! y. D7 t$ J我在此分享一下拍攝方法, 希望可以幫到大家.9 r0 b9 m  J9 Y
首先, 相機設定為 S-AF和單發拍攝..(真的!!是S-AF!!).快門釋放優先為關.1 g5 M, T3 _8 c- f  r, D2 {+ e7 @& j& _
然後拍攝過程如下.1 _; w" g/ ~* ^
1.站穩-----2.瞄準目標(不要半按快門!!)------3.快門鍵一按到底至完成拍攝------4.重覆以上動作.
9 ?( E/ C* S% W* [% n* j連拍過程就用就自己手指來完成,就和打電動一樣. 重點是不要半按快門來合焦, 要一按到底.
6 A! r/ R$ w2 b# g原理是利用E30的S-AF的準確對焦和快門延遲短的特性來拍攝移動目標. 4 W! \& O1 q0 a! L
經多翻練習,我個人覺得拍攝移動目標比c-af為準. 廢片也小了.  
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評分人數

    • naluwanking: 相當實用的圖文心得分享。威信 + 8

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拍攝得精彩,抓得真準!想請教Firecowgod兄,IS/OFF與IS/ON是有何差別呢?

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目標正面跑來=IS1 目標由左跑向右=IS2 目標由上往下=IS3 目標由左上往右下=IS/OFF

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Firecowgod兄,的意思是S-AF對焦框' n6 b) _1 @1 e4 W9 M
對中目標直接把快門按到底,成功率高
) [* {, B. M; @2 T' W4 b* H6 p只是c-AF真的不好用就是了

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Firecowgod兄抓拍的精彩,方法回去試試

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回復 11# tomchang ( Z$ H1 s4 g1 H6 X

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    沒錯! E-3 C-AF 的確很瞎! 哇ㄌㄟ...簡直不想提! 甚至用S-AF 在光線不佳處也是反複對焦...不如用MF; 不過這正是提高技巧的方法!
+ Q: G9 T7 H( B4 F6 A8 _& ~Olympus ㄚ! 真是感謝你!
dong

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