请教镜头专家

StormRider

Canon Powershot SX230 HS ？

Not only does the Canon Powershot SX230 HS appear at the top of several pages as a result of its position in the alphabet, it is also, coincidentally, one of the best cameras in this group. The new sensor and processor deliver excellent image quality in just about any situation we tested the camera in, and when you add excellent optical quality and video performance into the mix, the SX230 HS is a very compelling camera. Compared to its predecessor the SX230 HS offers better image quality and a meaningfully expanded feature set, including effective GPS.

The only flies in the ointment are noticeable chromatic aberration and fringing in certain shooting situations (which the camera makes no effort to correct), noticeable barrel distortion at the wide end of the zoom and comparatively slow autofocus. We'd love to see Canon add a touch-sensitive screen in the next generation, but for now, the SX230 HS's 'traditional' button and dial interface works well.

暖暖阳光

乱说一下，

Skylight 天光镜 --不用长焦拍摄天空基本上很难看出效果。

NC 又叫灰镜 --想用慢门拍摄丝丝细流，就要用灰镜减少白天的强光，以达到拍摄效果。
UV --普通的UV镜是单层镀膜，过滤紫外线的效果不行，还会影响成像质量，但遮挡灰尘有用，

多层镀膜的UV才能起到过滤紫外线的作用，不会产生杂光，拍摄远山和海滩会使画面更通透一些，没有带雾的感觉。

Bingster

回复 62 # StormRider 的帖子

I kind of agree with this,

The NC filter is just plain optical glass, multicotaed both sides, who's only purpose is lens protection.
A UV filter blocks UV rays, useful for film cameras.


You can check out the following thread:
http://forums.dpreview.com/forums/read.asp?forum=1007&message=18932404


But too many different opinions on the web. It's confusing.

StormRider

请诸位大侠给扫盲一下：

UV 过滤镜 和 Natural Clear 的过滤镜 有啥不同?  
http://www.bhphotovideo.com/c/bu ... 89362420+4294955252