雨中赏花 发表于 2012-1-13 17:56
哈哈，俺对D4最大的不满就是十字对焦点的分布没有提升，毕竟在室内光线下大光圈全开，一字对焦点还是不太给力，而F8可以对焦，对大部分买D4的人就是鸡肋，绝大多数买D4的人，不会买540 640，虽然有340的不少，但加了2X之后也只能说能拍到，除了野外摄影很有用。
而十字对焦点的增加，对每个买D4的人，都是实实在在的性能提升。
俺目前更倾向先买1DX，D4可能在奥运之后再入。

ninjai 发表于 2012-1-14 08:22
据说NPS注册会员订购的，将优先收到D4。他们已经收到NPS的邮件，称这是nikon的Priority Allocation Scheme。

老像 发表于 2012-1-14 13:20
副厂电池有机会

一路上有你 发表于 2012-1-14 10:06
老兄比我等得时间长 我等了一年 你够狠 我挺你 也许我也忍不住上了 虽然升级不是很巨大 但是也够用了 咱又不是大师级别的 本帖最后由 一路上有你 于 2012-1-14 10:07 编辑

一路上有你 发表于 2012-1-14 09:38
都上D4了 有几个不用2.8的 再说了 如果在边上设置个十字店 竖幅拍摄T台什么的我想会提高不少吧

雨中赏花 发表于 2012-1-14 07:19
扩大对焦点范围难度较大，但把CAM3500的十字对焦点增加应该不难，CN都一样，不被对手痛击，就慢慢挤牙膏。

苯苯小哥 发表于 2012-1-14 08:52
不是电池容量 和张数都低了吗

雨中赏花 发表于 2012-1-13 23:18
这个还真不是，D3的一字对焦点在室内暗光下不光慢，而且拉风箱，到了D3S也没改变。俺是在D3X出来之后，反而买进的大马三，就是因为十字对焦点的问题。以前因为小马三的对焦问题，以及C的暗部噪点（20D的人像，脖子下的暗部就像长了湿疹）出掉了乎全部的C镜头，买了马三又重新买镜头。

D3的黑暗处对焦能力很好，俺有几张在1米外看不清五官，只能隐约看到人影的环境下拍的，※※点居然还能对上焦。

Rob Galbraith spoke to Nikon’s senior official about the battery issue. It turns out that while the new EN-EL18 is rated lower, it in fact delivers greater shooting time than the old EN-EL4a battery. Here is the quote from the article:

The particular Lithium battery chemistry they ultimately selected for the EN-EL18 delivers greater actual shooting time than the EN-EL4a, says Akagi, despite its lower milliamp-hour rating, when the camera is autofocusing and firing constantly. For example, when a photographer is covering a soccer match with a 400mm f/2.8, or any other situation where the camera is spending more time fully active than idle. When the battery is being continuously pushed to provide current to drive the lens motor, shutter, mirror, image sensor, processing circuitry, memory card and more, Akagi indicates the EN-EL18 will power the D4 through more frames than the EN-EL4a could have, and more frames than the D3S and EN-EL4a too.

Akagi accompanied his explanation with hand-drawn approximations of the discharge curves of the EN-EL18 vs the EN-EL4a at low, medium and high current draws, which showed the EN-EL18 outstripping the EN-EL4a when current demands were highest. The high-current discharge characteristics of the two batteries, he says, are different enough that it enables the 10.8V/2000mAh EN-EL18 to outlast the 11.1V/2500mAh EN-EL4a when the D4 is doing lots of autofocusing and capturing lots of pictures. In this scenario, says Akagi, the EN-EL18 will provide roughly 10% more runtime than the EN-EL4a, at normal temperatures. In cold environments, the EN-EL18′s runtime advantage is described as being even greater.
Put simply, if you’re using the D4 to take a steady stream of photos, Nikon’s contention is the EN-EL18 will give you more frames per charge than would have been possible with the EN-EL4a. Conversely, if the camera is kept awake but is spending far more time idle than it is taking pictures, the EN-EL4a would last longer on a single charge than the EN-EL18.

一路上有你 发表于 2012-1-14 01:07
就是就是 我也不满意这点 我是希望一是扩大对焦点的范围 别老挤在※※ 二是能不能在边缘位置设置十字点
不过看老牛的回帖 貌似目前技术上不能实现还 估计等到D4S D4X的只怕也很难

緯軒 发表于 2012-1-13 23:37
如51點如同※※點表現，就完美

但對小弟，如中間15點反應能提升一個增距差別，我很滿意

雨中赏花 发表于 2012-1-13 18:04
俺相信，和俺一样不满D3的十字对焦点分布的大有人在，希望D4X能改善。

緯軒 发表于 2012-1-13 22:18
只希望15點有提升