众所周知,数码单反的一个优点就是可以更换镜头,可笔者以为这也是其缺点之一,因为在更换镜头中,难保灰尘不会“乘虚而入”,而且,数码单反更换镜头越多,灰尘就越容易进入数码单反机身中。尤其是在条件恶劣的环境中,主要指风沙等。灰尘一旦进入数码单反CCD或CMOS中,轻者使你的照 As we all know, one of the advantages of digital SLR is the lens can be replaced, but I think this is one of its shortcomings, because the replacement lens, it is difficult to ensure that the dust will not “take advantage of” and, the more the digital SLR to replace the lens, the more the dust Easy access to digital SLR body. Especially in harsh conditions, mainly refers to wind and sand. Once the dust into the digital SLR CCD or CMOS, light to make your photo