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onclick="setCopy('http://forum.oecr.com/plugin.php?id=attachcenter:page&aid=3643', '链接已经复制到剪贴板');" type="submit"> <em>复制链接推荐给好友</em></button> <input type="text" class="px vm" onclick="this.select();setCopy(this.value, '链接已经复制到剪贴板');" value="http://forum.oecr.com/plugin.php?id=attachcenter:page&aid=3643" size="50" /></p> </div> <div class="bm"> <div class="bm_c xld"> <b>數碼相機原理?:</b><div class="postmsg"><<img src="static/image/smiley/default/titter.gif" smilieid="9" border="0" alt="" />>有誰比較清楚數碼相機AF原理及鏡頭原理的?請給我一點指點﹐謝謝。</P><img src="static/image/smiley/default/em09.gif" smilieid="38" border="0" alt="" /></div> <div class="postmsg"><<img src="static/image/smiley/default/titter.gif" smilieid="9" border="0" alt="" />>数码相机的不是很清楚，但是一般的傻瓜相机的AF原理倒是了解一二，一般包括发射回路和接受回路：</P><<img src="static/image/smiley/default/titter.gif" smilieid="9" border="0" alt="" />>发射回路的IRED发射红外线，经被摄物体反射回相机，由测光回路的spc接收，spc电压的变化分段为</P><<img src="static/image/smiley/default/titter.gif" smilieid="9" border="0" alt="" />>远点与近点，再判定是否驱动zoom马达进行自动对焦</P><img src="static/image/smiley/default/em02.gif" smilieid="31" border="0" alt="" /></div> <div class="postmsg">哦原来是这样的啊，多谢啊。<img src="static/image/smiley/default/em07.gif" smilieid="36" border="0" alt="" /><img src="static/image/smiley/default/em07.gif" smilieid="36" border="0" alt="" /></div> <div class="postmsg">怎么都是繁体呀？刚刚下的一个也不知道什么东西，不能看</div> <div class="postmsg">可以下, 多谢<br /> 增长知识啊<img src="static/image/smiley/default/em34.gif" smilieid="63" border="0" alt="" /></div> <div style="height200px;"></div> </div> </div> </div> </div></div> </div> <!--autocomment filter by maxnum--> <div class="ft_wp"> <div id="ft" class=" cl"> <div id="flk" > <p> <a href="http://wpa.qq.com/msgrd?V=3&Uin=20600600&Site=光电工程师社区&Menu=yes&from=discuz" target="_blank" title="QQ"><img src="static/image/common/site_qq.jpg" alt="QQ" /></a><span class="pipe">|</span><a href="http://m.oecr.com" >手机版</a><span class="pipe">|</span><a href="http://so.oecr.com" title="站内搜索" 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