[贴图]1.3M 4.85MM F2.8
新手,很多不懂的地方,练习的作品有请各位高手多指教!谢谢
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<img src="data/attachment/forum/dvbbs/2005-4/2005424106099341.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'data/attachment/forum/dvbbs/2005-4/2005424106099341.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
请问:你用了几面的非球面啊?
单看MTF值还是不错的耶?
看样子用了四个非球面,不知是不是1G2P......
大概是5个非球面,除了第一面不是。
我觉得应该是不能使用的,虽然mtf是比较高,实际做出来的就不是这个了。
不过设计得非常好了。
不知道MTF VS. FLD 如何. 还有畸变.
第一片边厚太薄. It's a nice performance.
I also think that it's used 4 or 5asphere. 非球面设计得好奇怪呀!加工会不会有问题呢 <P>请问?G?P中G是指GLASS,那么P是指什么啊?</P>
<P>还有看一本书中,SING2O6A,不知道2和6具体的含义啊?</P>
<P>求战友帮忙啊!!!</P> 奇怪,这个镜头我很早以前就设计过,你怎么也会?是手机上用的,4个非球面如果我没记错的话,不过你的MTF算蛮高的
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