★★★★★怎样挑选数码相机★★★★★

[ottawacfcgmail]

thank you

 

[LM_Bass_Monster]

问得好！

1>Canon 18MP 7D DSLR Camera Kit with 16GB SDHC Memory Card, DSLR Camera Bag and 67mm Filter$1969
2>Sony α65 DSLR Camera Body$1049.99
3>Nikon D700 $2499.95

DSLR 相机的那几个参数最重要？是不是 CMOS 的 Effective Pixels 决定了相机机身的身价？ 我认为EffectivePixel最重要，对吗？因此Sony α65是现在市场上最好的因为是24MPixels把竟争对手Nikon700的 12MP 和 Canon 7D 的18 MP远远甩在后面， 假设三台相机用相同的镜头Sony α65 拍出的照片清晰程度远远高于Nikon D700 和 Canon 7D， 对吗？请点评
为什么 Nikon D700 仅仅12MP 居然要价 $2499.95? 贵在何处？


http://www.futureshop.ca/en-CA/product/-/b9002592.aspx?path=f5a37e97e370a136392604b91e0dd248en02

http://store.sony.ca/webapp/wcs/sto...&productId=8198552921666375283#specifications

http://en.nikon.ca/Nikon-Products/P....html#tab-ProductDetail.ProductTabs.TechSpecs

问得好！用三台相机照同一物体,看哪一台出彩,就买那一台,抛开价格,牌子的干扰因素,让照片自己说话.

 

[29181]

D700是全幅的(full frame), 7D是APS-C, a65不太了解，不过看价格也应该是减幅。

全幅的感光元件大，成像质量一般会更好。

 

[6inch]

1>Canon 18MP 7D DSLR Camera Kit with 16GB SDHC Memory Card, DSLR Camera Bag and 67mm Filter$1969
2>Sony α65 DSLR Camera Body$1049.99
3>Nikon D700 $2499.95

DSLR 相机的那几个参数最重要？是不是 CMOS 的 Effective Pixels 决定了相机机身的身价？ 我认为EffectivePixel最重要，对吗？因此Sony α65是现在市场上最好的因为是24MPixels把竟争对手Nikon700的 12MP 和 Canon 7D 的18 MP远远甩在后面， 假设三台相机用相同的镜头Sony α65 拍出的照片清晰程度远远高于Nikon D700 和 Canon 7D， 对吗？请点评
为什么 Nikon D700 仅仅12MP 居然要价 $2499.95? 贵在何处？


http://www.futureshop.ca/en-CA/product/-/b9002592.aspx?path=f5a37e97e370a136392604b91e0dd248en02

http://store.sony.ca/webapp/wcs/sto...&productId=8198552921666375283#specifications

http://en.nikon.ca/Nikon-Products/P....html#tab-ProductDetail.ProductTabs.TechSpecs

There are many factors:

- Sensor format, APS or full frame
- Image file bit depths
- AF system
- High ISO performance
- Continuous shooting, fps.
- etc.

Cameras with more megapixels do not necessarily have higher image quality.

Actually the larger individual pixels, the better S/N ratio resulting in better detailed images.

 

[小熊笨笨笨]

不用说了，就7d把。尼康的d700已经准备停产，因为d400要出来了。
索尼的那款是低端机。
看相机其实看的不光是像素，还有对焦点（这个尼康最强），连拍（这个索尼应该占优，因为他的遮光板是半透膜技术），对焦的准确性，iso的降噪，还有就是厂家的镜头群。所以选相机一般我比较推荐，有多少钱，干多少事。所以先要看你的初期预算在多少。在看你的偏好在来定机子很搭配的镜头，就你说的这几款机子中，也就是7d的性价比最好了（前提是你不追求全副）。

 

[Oliverchen]

不如直接无敌兔？

 

[hcloud]

现在5D2太合算了。

 

[ottawacfcgmail]

无敌兔$1999机身是非常好的DEAL 吗?

现在5D2太合算了。

你的意思是ＦＵＴＵＲＥＳＨＯＰ Canon EOS 5D Mark II 21.1MP DSLR Camera - Body Only - Stores Only--$1999是非常好的DEAL 吗?除去http://www.henrys.com/我因该到哪里去配镜头呢? 我想要EF 17-40mm f/4L USM


http://www.futureshop.ca/Search/Sea...c43414e4f4e&viewall=true&targetCategory=23773

 

[ottawacfcgmail]

可惜$2799.99 卖完了

不如直接无敌兔？

Canon EOS 5D Mark II 21.1MP DSLR Camera With 24-105mm IS USM Lens Kit---可惜$2799.99 卖完了

http://www.futureshop.ca/en-CA/prod...spx?path=9472065442f2805dfc5ec8e58f754fc6en02

 

[ottawacfcgmail]

我非常犹豫的是7d的12M太落后了,

不用说了，就7d把。尼康的d700已经准备停产，因为d400要出来了。
索尼的那款是低端机。
看相机其实看的不光是像素，还有对焦点（这个尼康最强），连拍（这个索尼应该占优，因为他的遮光板是半透膜技术），对焦的准确性，iso的降噪，还有就是厂家的镜头群。所以选相机一般我比较推荐，有多少钱，干多少事。所以先要看你的初期预算在多少。在看你的偏好在来定机子很搭配的镜头，就你说的这几款机子中，也就是7d的性价比最好了（前提是你不追求全副）。

我非常犹豫的是7d的12M太落后了,你看无敌兔不但是全幅而且是21.1MP 几乎是7D的两倍,如果我没有记错的话D700自从上市以来已近2个年头了,太老了一点技术陈旧了一些而且现在的光电元件发展飞速，２年的时间太久远了,即便是全幅,我觉得Sony24Mp肯定要比D700 好很多. 我已经注意到精华贴里的杰作<< Banff/Jasper之路边摄影 >>出自5D2, 半夜听歌可能会有另外的见解

 

[ottawacfcgmail]

挺专业的回帖，请各位大侠再点评：我衡量一台DSLR 相机是根据这五个要要素

 

[ottawacfcgmail]

Sony α900 DSLR Camera Body
不但是24.6-Megapixel Resolution 而且是全幅应该是现在ＤＳＬＲ相机群里的领跑者　性能价格比最优

http://store.sony.ca/webapp/wcs/sto...0153&langId=200&productId=8198552921665531176

 

[简单简单]

不要依照相机的像素来评定它的好坏的
像素高不一定感应器能消化的下那么多的像素

 

[ottawacfcgmail]

如果你仔细看前面几贴，就会发现ＬＺ已经总结归纳了像素和ＦｕｌｌＦＲＡＭＥ两个决定因素决定了一个相机机身的性能

不要依照相机的像素来评定它的好坏的
像素高不一定感应器能消化的下那么多的像素

这话相当于对联的上联，还没有完，那么什么参数是你评定一个相机的性能呢？　如果你仔细看前面几贴，就会发现ＬＺ已经总结归纳了像素和ＦｕｌｌＦＲＡＭＥ两个决定因素决定了一个相机机身的性能而不是你只看到的像素，除了这两个决定性因素没有发现你提供更多的信息．喜欢你用的＂消化＂　这个词．ＦＵＬＬＦＲＡＭＥ　的size　就代表了一个相机的消化能力ＦＵＬＬＦＲＡＭＥ　比APS消化能力要好．像素太低，再好的消化能力也吃不饱，性能也不会好．

 

[garychan]

I think there is a fundamental misunderstanding of camera performance.

Each "pixel" is an electronic device which is susceptible to interference of any kind. For image sensor, the worst you can get is inter-pixel interference. High pixel count only works only if the camera has very effective noise cancellation mechanism, which means the camera will need very sophisticated filter for each pixel. This will drive the price of the camera to unaffordable level. The trade off of this is to design an image sensor with larger size pixel, which means for a given sensor size, the pixel count will be reduced. But the most important thing, filter, can be kept simple. Then you have to ask yourself a question: do you really need that amount of pixels? This would be yes if you are going to print a huge poster. Otherwise, it will make no difference to bare eyes. On the other hand, larger pixel gives higher signal-to-noise performance ratio. That means you don't need an expensive filter after each pixel to get good signal level. If you get inter-pixel interference, you may not get the natural color you want.

The draw back of high pixel count, of course, is low light/high iso performance because manufacturers have to keep the sensor price low. A camera with high pixel count and cheap filter design will not give you anything better than a camera with low pixel count and larger pixel.

There is one significant advantage of larger pixel size: dynamic range. This is the performance of capturing light of different brightness levels.

The last thing I want to say is lens. I believe lens is much more important than camera body. An advanced camera body today will become obsolete a few days later. However, a good lens will take decade to have any performance leap.

I guess now you understand why 7D comes with only 18 MP.

Regarding someone's comment about "consuming the pixels", I believe this is referring to the continuous shooting mode. Correct me if I'm wrong.