杨戬 知名会员 注册 2003-12-26 消息 1,983 荣誉分数 14 声望点数 148 2005-05-07 #1 昨天拿到镜头,跑回家就开始测试。7个点在17-40和小小白上都没有发现跑焦问题,近距离微拍100%原图像也很清晰,于是狂喜。 接下来拍landscape,问题就来了,没有想象中的sharp,不管是手动,自动,100%原图都没达到有想象中的程度(光线充足,手也没抖)郁闷:( 上几张原图截图,各位师傅们帮忙看看是否属于正常情况。或是说,我有操作不当的地方吗? 1
昨天拿到镜头,跑回家就开始测试。7个点在17-40和小小白上都没有发现跑焦问题,近距离微拍100%原图像也很清晰,于是狂喜。 接下来拍landscape,问题就来了,没有想象中的sharp,不管是手动,自动,100%原图都没达到有想象中的程度(光线充足,手也没抖)郁闷:( 上几张原图截图,各位师傅们帮忙看看是否属于正常情况。或是说,我有操作不当的地方吗? 1
F fad 知名会员 注册 2003-04-10 消息 2,860 荣誉分数 0 声望点数 146 2005-05-07 #4 I'm not experienced in sharpness test but I think it's not bad at all. To be rigrous, tripod mount your camera, use mirror lockup and timer, try a few more shoot at different F stop.
I'm not experienced in sharpness test but I think it's not bad at all. To be rigrous, tripod mount your camera, use mirror lockup and timer, try a few more shoot at different F stop.
davidc 新手上路 注册 2003-07-26 消息 1,089 荣誉分数 0 声望点数 0 2005-05-07 #5 i think picture 3 is not bad. Sometimes, the haze causes some problems, not because your lense and camera.
i think picture 3 is not bad. Sometimes, the haze causes some problems, not because your lense and camera.
TheOneAndOnly Moderator 注册 2002-10-27 消息 7,067 荣誉分数 1 声望点数 168 2005-05-07 #6 感觉应该是正常的,取了UV可能会好点儿(如果你装了的话)。 其实我觉得只有定焦头出的片子看上去很sharp,变焦的怎么都要USM一下才行。
G GangW 资深人士 VIP 注册 2004-03-22 消息 2,741 荣誉分数 99 声望点数 208 2005-05-07 #7 should be more sharp. did you use UV filter?