[leehyalbert]

回應"h0001244"師兄, 我明白你的意思, 如果係咁, 其實Canon有點取巧, 一部用來代替1Ds Mark III, Full Frame頂級機（EOS 1DX) 比一部"APS-C"的頂級機只高了2MP, 但要犠牲了3MP(比1Ds Mark III)的像素. Canon真的要去到如此地步嗎!!!我明白不要單單追求像素, 但這是否時光倒流?

[ohpalkof]

I do not recommend comparing hardware spec between 2 models particularly when they are from different manufacturer, launched at different timing and possibly targeting different consumer segment. To me it’s too subjective to simply conclude from the beginning that “1D-X SHOULD be competing with D3X not D3s”. (why??)

Having said, to respond to the above c-hing, I still don’t really think 1D-X is really that bad even comparing with D3X apple to apple.

(I am a Canon user so please correct me if my knowledge about D3X is wrong. I appreciate that.)

Other than the mega pixel you mentioned (18MP vs 25MP), to my understanding, Canon 1D-X is having a higher spec over D3X in terms of:

- ISO: Native ISO up to 51200 vs 1600
- Shooting fps: 12 vs 5
- Movie recording: Yes vs No
- AF: 61 AF points (40 cross type) vs 51 points (15 cross type)

Again, I do not intend to compare 2 cameras to conclude which one is superior over the other. They are launched in different timing. What I am trying to say is, I think Canon is already having advancement when defining the 1D-X in comparison with marketing offerings. We should not purely conclude 1D-X with just the pixels.

For sure, Nikon will respond to 1D-X too, and probably with a better spec. This is just how the manufacturers do to make money right?

Of course, I think technology-wise it may be doable to achieve the above feature set while making the pixels to 20~30MP. But everything is about the ‘balance”; if the production yield rate is not good enough, at the end it may become a monster type machine having to sell at HKD 200,000. Who is going to buy then?

[hanny]

nikon人時時說

~~不要追求像素~~

[hanny]

leehyalbert hing


d3x 絶对不是1dx的对手

因為1dx是快和髙iso勁dynamtic range

d3x絕對沒有這些憂點
只有髙pixel就連iso800都已經很幸苦了
d3x只是一台用在studio的馒機

[nobody123]

不要追求像素 = 不進則退,,想一想電視機未有高清的時代.....黑白...彩色...標清...高清....現在家家户户都高清啦...提供高像素高性能的產品提升是廠方的責任...不過Canon今次的target 都唔係我地一班想換機的用家...但中幅都8000萬像素....無理由Canon成6萬蚊部機仲停留在1800(2500)像素...出1DX頂1D4原則上無問題....不過間間大廠都UPGRADE得甘少....就有啲失望

玩吓像素遊戲喇....究竟船身中間寫了甚麽字

[pongyee]

深南3025(?)

[MCCU]

如果PIXEL 甘重要

HOW ABOUT THIS 5D3 2800MP

http://www.youtube.com/watch?v=-7_7W8E-bi8&feature=fvwrel

[endlessmove]

我都唔知要咁大像素做乜？乜你哋會將張相晒到棉胎咁大咩？

==========================

我地業餘用家，唔會曬咁大。但作為棋艦機！商業用途將張相曬到三四層樓咁高既作品都有！

[t502kg]

***玩吓像素遊戲喇....究竟船身中間寫了甚麽字***

"深南3025" x 2

[Galantvrm]

高像數呢D都係$$$$$問題者！
依家都要五萬幾
佢出多架有4000萬像數但要賣成十萬銀又有無人會買丫！

[春田花]

高級客戶做宣傳一定會用數碼背拍攝照片，除非要考慮機動性與速度才會選擇135系統，另外大家都對戶外大型廣告的解像度需求有很大的誤解，面積愈大像素要愈高不是絕對的，還要顧及觀賞距離，最動要是印製設備的處理能力其實不能support「面積愈大像素要愈高」的理論，相反面積愈大像素反會向下調整，因為在打印過程須經過software將圖像做interpolation, 像素補插也（有些早期數碼相機如Fujifilm與Leica合作生產的一系列相機會內置像素補插），被稱為RIP file的過程會將一個合理的file利用software來為像素補插，Raster Image Processing (RIP)的能力愈是高，其售價會反映其能力，專業的RIP軟件動輒數萬港元一套，還要配合較高速的電腦，故不能內建在一般相機內。當然像素愈高對印製質素有關係，但不至於一面倒的非高不可，在數碼世界的層面來與菲林時代直接比較是不切實際的，Canon 1DX這次將像素下調說出了兩件事情，一，像素不是一切，二，技術已經到了樽頸位。像素要與畫質、週邊設備及售價取得平衡，難道Canon真的會為了將要推出更高級的1D系列而甘願down size?消費級的G系已經down size了一次，這G系的用家都是科技迷居多，你認為Canon會蠢得將像素調低來給這班不顧理智的忠實用家打咀吧嗎？像素再高但畫質下調還是忍痛用像素遷就畫質明智？35mm系統要有極高的機動能力，這是賣點，Leaf這類數碼背像素夠高了，用過的話你就會明白影像處理的速度有多慢，記憶卡的寫入速度又有多慢，我自己使用的Pentax645D，在不停的拍攝環境中，寫入速度雖不及35mm的爽，也不至於“立”，但別要中途按一下preview，其售價反映出image processing ability是將貨就價的，比她貴三倍的Leica S2就沒有此問題了。大家用像素高低去衡量一台相機的能力，好比用馬力來比較汔車有幾勁，卻忽略扭力，馬力重量比，corner weight, gear ratios, suspension setup等的vehicle dynamic問題。

[hanny]

我都唔知要咁大像素做乜？乜你哋會將張相晒到棉胎咁大咩？

~~~~~~~~~~~~~~~~~~~~~~~

我不會晒到棉胎咁大
但在電腦會放得比棉胎更大

ar q

[hanny]

Canon 1DX這次將像素下調說出了兩件事情
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

你錯了
像數就是一切

用千八萬象的原用是為了快
你認為三千六百萬象cpu+ram可以推到一秒十畐嗎

1dx只是一台快機
要高象數還看1ds4吧

[hanny]

1ds = full frame+high pixel
1d = aps-h+fast
1dx =full frame +fast+new focusing

all different channel

[nobody123]

出入平安