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[5D II] 5DII 低光源對焦

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發表於 2009-5-7 14:56 | 顯示全部樓層 |閱讀模式
請問這裡有人有5D II,然後再低光源的地方有對不到焦的問題嗎?

我這次出國才真正發現5D II 有這個問題,我也覺得既然有高ISO

怎麼低光源又對不到焦? 我一開始是用400D, 然後是1D III(朋友借玩幾個月)

都不會有這樣的問題,..剛又打去客服問,他說他們目前都沒有聽說有人的5DII 有問題..

我在國外的網站查到有很多人都有這樣的困擾...

想說看看有沒有大大也有這樣的問題..

加上我覺得5D II 拍出來的相片不夠銳利..有國外的人就得到canon 予以換機..


希望Canon真的不要再出錯了.....

謝謝各位大大
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發表於 2009-5-7 15:02 | 顯示全部樓層
前幾天我們家人過生日,電燈全關只有兩根蠟蠋的情況下,
還是可以用自動對焦拍陰暗處的家人,
我想重點應該在於是否有對準\"具有對比處\"來對焦,
否則即使在明亮的環境也無法對著白牆來自動對焦。
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發表於 2009-5-7 15:02 | 顯示全部樓層
我也有同樣的困擾! 之前用450D + S30 1.4 ISO800可以對的暗處
最近使用5DII + EF 50 F1.4 ISO3200 就對不太到,不知道是錯覺還是?
Firmware是1.0.7~~希望不要有問題才好!!
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發表於 2009-5-7 15:03 | 顯示全部樓層
我的相機  在低光源  根本不知道什麼是 焦....

全靠 神燈  紅外線光   ㄏㄏㄏㄏ
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 樓主| 發表於 2009-5-7 15:03 | 顯示全部樓層
ISO 400 with f8.0 and a shutter speed of 1/250sec

換機之後

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 樓主| 發表於 2009-5-7 15:05 | 顯示全部樓層
原文~



I purchased my new 5D Mark II a few weeks ago and noticed that I was also getting focusing problems. Being a fairly professional and regular user of the original 5D I couldnt work out what the problem was. I do alot of outdoor portraiture work and found with the 5D Mark II on a number of occasions that despite a number of shooting programs and options even when the autofocus point is pointed at the subjects head the whole photo came back blurred. I checked the settings and even at ISO 400 with f8.0 and a shutter speed of 1/250sec I was still getting out of focus shots. I found this to be very very odd and not something I had experienced with the original 5D.
See this link which shows the problems I was having with quite a few of my outdoor shots:

You will need to do a proper 1:1 view on this.
My 5D Mark II also suffered from crashing when shooting in Full HD mode even though the Scandisk Card was Ultra III and I also had issues with the metering where I sometimes had photos which were bleached out.
I phoned my camera shop where i purchased it and explained the problems and they contacted Canon. A day later the camera shop (Walters in the UK who I highly recommend) offered a full replacement with no debate or the usual bull you get from some camera shops.

I went out today and did a series of test shots with a test subject and all shots came back fine and no focusing problems using the same shooting conditions as I used above. I found that the metering was also far better under a number of test conditions so perhaps the focusing problems arent down to user error in all cases and may be a sign that there is a problem with this camera. I have a feeling for those people who know how to use this camera and are having focusing problems then my advice would be to contact Canon or the place where you purchased it and ask for a replacement or to have it checked with Canon.
This link below shows the shots I am now getting back on my replacement 5D Mark II so fingers crossed this may have solved my focusing problems. Notice how the subjects face is very sharp and in-focus compared to the previous shot even though the f value was 4.0! Hmmm so after taking around 20 test shots all of them came back perfect. I wonder then is it user error or is there a problem with the 5D Mark II that Canon is not being honest about?
New shot from replacement 5D Mark II :-)
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發表於 2009-5-7 15:43 | 顯示全部樓層
閃燈輔助還滿不錯的
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發表於 2009-5-7 16:10 | 顯示全部樓層
這腦人問題有時我自己作法是多帶一支小手電筒幫忙對焦, 但有可能會影響測光(因為在低光源下), 要自行調整一下.
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發表於 2009-5-7 18:01 | 顯示全部樓層
感謝分享!![s:6][s:6]
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發表於 2009-5-7 23:37 | 顯示全部樓層
對焦模組和傳感器是不同的東西
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發表於 2009-5-7 23:49 | 顯示全部樓層
5DII和5D,原本暗部對焦就比較差。

先不要說暗部!
正常下:如果你用過40D,50D,或是1系列。
你會深深體會5DII和5D對焦速度沒有來得上述機種快。
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 樓主| 發表於 2009-5-8 13:35 | 顯示全部樓層
我已經有衝動要換1D III

但是就有幾點讓我很掙扎

5D II--- LCD 96萬, 22MP, Full Frame, HD recording(沒有我也OK), 4代的腦袋,ISO到1萬多
1D III-- 10 FPS, 45點對焦,30萬次耐操, 我不用在買電池手把~[s:6]

哀...我的重點是,5dii 有超高ISO,但是如果對焦會有問題,那不高ISO就無用武之地了?
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發表於 2009-5-8 15:14 | 顯示全部樓層
我已經有衝動要換1D III

但是就有幾點讓我很掙扎

5D II--- LCD 96萬, 22MP, Full Frame, HD recording(沒有我也OK), 4代的腦袋,ISO到1萬多
1D III-- 10 FPS, 45點對焦,30萬次耐操, 我不用在買電池手把~[s:6]

哀. ...
george926 發表於 2009-5-8 13:35


不很講究速度的還是5DII好,成像強了不少還是全幅
你買1D3還不如買1DS2
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 樓主| 發表於 2009-5-8 16:22 | 顯示全部樓層
本帖最後由 george926 於 2009-5-8 16:23 編輯

13# yeahning

所以個位大大也不建議換一台1D III?

我有個朋友有1D III想要換5D II.. 所以我在想跟他換再貼點現金. 全機可以說是完美,可能聽起來很怪但是他一出就買,到現在照還不到100張..因為他覺得他買的太過頭了,想要退幾步..

請問各位大大有任何意見給小弟?

像是第一批出的1D III 有任何問題嗎?

謝謝大大們
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發表於 2009-5-8 20:32 | 顯示全部樓層
13# yeahning

所以個位大大也不建議換一台1D III?

我有個朋友有1D III想要換5D II.. 所以我在想跟他換再貼點現金. 全機可以說是完美,可能聽起來很怪但是他一出就買,到現在照還不到100張..因為他覺得他買的太過 ...
george926 發表於 2009-5-8 16:22

看機身號
但是我又聽朋友說小馬三即使是后出的批號對焦系統也有問題
小馬三和大馬二價格都一樣,為何不選全幅的,全幅的作用比高速連拍大得多
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