推荐回答（5个）
以200万像素自动对焦摄像头为卖点的索尼爱立信K750，一跃成为05年无与伦比的拍照强机。不过，随着Cyber-shot拍照手机队伍不断壮大，拥有320万像素的手机逐渐开始普及。因为这款K750逐渐失去了往日的光芒，现在仅999元的售价将200万像素自动对焦摄像头也彻底拉入了低端阵列，性价比相当突出！
最新直板手机，W902（水货2500行货3500）
作为目前索尼爱立信Walkman系列的旗舰级手机，索尼爱立信W902无论在音乐还是影像功能等方面的表现都可以用出类拔萃来形容。该机不仅引进了来自索尼爱立信 W980之上的“Clear Stereo”与“Clear Bass”音质提升技术和支持8GB存储卡扩展等功能，而且内置的500万像素摄像头更是具备了与Cyber-shot系列的C902相仿的拍照功能，诸如自动聚焦，LED闪光、拍摄或录像开启的防手震和“BestPic优拍”等诸多拍照功能。至于其他诸如A-GPS导航、蓝牙技术和存储卡扩展等功能也是一应俱全。而且W902的原装耳机是HPM-77，也是目前所有索爱手机的原配耳机中音质最好的～～～
优点：音质好，索爱W902和W980是目前索爱音质最好的手机。运用Clear Audio技术，具备高素质的立体声输出及重低音输出效果。
还是索爱第1款500W像素的手机，拍照不输给K系列C系列
缺点：屏幕小了点，2.2英寸（k858，C905都是2.4英寸，直板手机又是音乐旗舰，索爱这回太马虎了）
新机价格比较高
具体看下面的链接http://tech.163.com/mobile/07/0712/09/3J6LLJ1L001117AG.html
首先，2008年索爱宣布用全新的C系列取代K系列照相地位，K系列已全面停产
K系列含义：可移动DC，K系列是索爱唯一的全直板系列
欧美手机中第1款支持自动对焦的手机：K750i/K750c
索爱第1款使用Cyber-shot相机镜头手机：K800i/K790c
索爱第1款3.5G手机：K660i
索爱第1款支持M2与MSD双内存卡扩展机型：K850i/K858c
索爱最后5款K系机型分别是：K850i/K858c、K660i、K770i、K880i、K900i
K系列是专为喜爱拍照的用户设计的，称为“可移动的DC”，意为手机的像素很高，，索爱K系列手机的镜头属于专业镜头，一般采用的是CMOS传感器.(有的附加红外传感)。当然现在K系列像读不是最高的。现在有X1。C905。K系列很久没上新款了，估计要被取缔了吧。
K系列都是以拍照为主要功能的照相机
除了拍照外具体跟其它系列的差别一般人感觉不出
我自己用的是K610I 跟朋友的W910 K800
对比....感觉不出什么差别,当然拍出来的照片我的K610比W910要清一些
K800像索高,我还没有可以对比的机子
k系列，就是索爱拍照手机嘛，现在已经停了。取代它的就是c系列
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