随谈照相器材的检测和试用机制兼谈市场评论问题严福祥翻遍几年来的摄影报刊杂志，竟没找到一篇由权威部门发表的有关国产照相器材的测试报告，不由心中生起疑团，难道这些数据属于哪级机密？在国外，往往新的器材还未上市就有预测消息发表，新机种一露面就有详尽的试用报... With the detection and trial mechanism of photographic equipment and market comment on Yan Fuxiang over several years of photography newspapers and magazines, did not find a published by authoritative departments on the domestic photographic equipment test report, involuntary doubt, are these data What level of confidentiality? In foreign countries, new equipment is often not listed on the forecast news release, a new model appeared a detailed trial of the newspaper ...