[balance01]

用此 5千萬像素 CCD 在 1.5英里高空拍攝地面, 可拍到地面上的一件 1呎 x 1呎的 notebook computer





Kodak has achieved another breakthrough in its storied history of imaging technology innovation with the introduction of the world's first 50 million pixel CCD image sensor for professional photography.

At 50 million pixels, or megapixels, the sensor captures digital images with unprecedented resolution and detail. For instance, with a 50 megapixel camera, in an aerial photo of a field 1.5 miles across, you could detect an object about the size of a small notebook computer (1 foot by 1 foot).

What's more, the KODAK KAF-50100 Image Sensor features a newly designed pixel that is smaller in size than the pixel used in current products for this professional market. This new pixel also reduces "click-to-capture" time for improved camera response, lowers power consumption for improved battery life, and improves color fidelity without compromising on the benefits to be enjoyed from larger pixel sizes.

[pongyee]

Balance 影友，

Firstly, thanks for sharing.

以我理解，上文說的是從空中拍下一張 1.5 哩闊的地面照片，從中你可以看得到一部細如 notebook 的物件(1 呎 x 1 呎)。

至於離地多高，相信要從鏡頭角度找答案了。

有錯請指正。

[kingkonghk]

幾高同用咩野焦距唔係問題, 主要係張相覆蓋1.5 mile, 用長焦鏡, 咪要飛高d囉

[travelben]

都幾勁, 5 千萬 wor.

如果影人, 張相好似用左顯微鏡咁, 每一 part 都可以勁大勁 detail, 我怕第時影朋友, 或影女, o的女會驚o左... 我..... 部機... haha.

[pongyee]

哎呀！

原來只是 for instance ，並無測試。

[d2c]

會員戶口已被刪除，資料已被標示為不顯示

[王迦南]

解像度與波長有關。


在今天的科技裏，可見光波的解像度十分有限，無論感光元件是甚麼，由光學鏡片做成的鏡頭不能做到精確的遠攝解像度。


在遠攝及超遠攝的天文觀測領域裏，我們需要用到非光學式的射電鏡頭。

[lmichael]

其實佢呢個範疇,係專業應用的範圍,唔係一般鏡頭用的, 以前, Nikon, Canon....都係專做一些特殊光學鏡頭,比佢地應用,例如偵察,醫學.....

[MN56]

>>>>>用此 5千萬像素 CCD 在 1.5英里高空拍攝地面, 可拍到地面上的一件 1呎 x 1呎的 notebook computer
>>>>>

要指出用幾長焦距同口徑既鏡頭。鏡頭解像度要同CCD既pixel size配合，先會有最好表現。要在1.5mile遠處拍得1呎x1呎既物品，解像度其實好低，即使640x480既webcam已經卓卓有餘。

[Douglaschow]

好多數碼背都用39M以上! 50M唔出奇?135mm機應該用唔到!應該用係中幅机, 如6x4.5之類, 135相機d鏡頭只能support到1mm200線!(己經頂籠)S記話出如果24M FF DSLR 我個人睇法可能要用頂級菜鏡致可以達到24m的要求!如果用d低精密鏡可能只得十幾m的效果.

[balance01]

pongyee兄,

你對 -
從空中拍下一張 1.5 哩闊的地面照片，從中可以看得到一部細如 notebook 的物件(1 呎 x 1 呎)

1.5哩應該係直徑

[老叟]

車,柯記出晚野都係好睇唔好用,遠離普羅群眾

[wkkwok]

都係睇到一個像素啫.
計下數 : 5000萬像素 = 7000 x 7000 = 49,000,000
1.5 英里 = 1.5 x 1760 (碼) x 3 呎 = 7920 呎
1呎不足一個像素 !!