<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><font face="Times New Roman">10</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、闪光灯:上面所说的曝光值(快门速度、光圈、</span><span lang="EN-US"><font face="Times New Roman">ISO</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">)都是在闪光灯关闭的情况下的使用方法,如果您的缸在</span><span lang="EN-US"><font face="Times New Roman">1-1.5</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">米,而鱼缸内任何一处的灯光亮度能达到</span><span lang="EN-US"><font face="Times New Roman">120W</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">以上(白光),同时把快门速度降低一点,完全可不用闪光灯。用了闪光灯后计算曝光会比较复杂,先要纠正一下曝光值,用了闪光灯的曝光值</span><span lang="EN-US"><font face="Times New Roman">=</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">快门速度</span><span lang="EN-US"><font face="Times New Roman">+</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">光圈值</span><span lang="EN-US"><font face="Times New Roman">+ISO+</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">闪光灯指数</span><span lang="EN-US"><font face="Times New Roman">+</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">拍摄距离。可先把快门速度提高到</span><span lang="EN-US"><font face="Times New Roman">1/125-1/200</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">,超过</span><span lang="EN-US"><font face="Times New Roman">1/200</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">无用,一般闪光同步最高速度在</span><span lang="EN-US"><font face="Times New Roman">1/200</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">左右,然后把</span><span lang="EN-US"><font face="Times New Roman">ISO</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">降低到</span><span lang="EN-US"><font face="Times New Roman">100-200</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">,光圈应该还是在最大。在这里需要特别指出的是拍摄距离,由于光线在水中会迅速衰减,当您用闪光灯拍摄靠近背景板处的鱼时,照片可能会显得昏暗(曝光不足),而拍摄前面玻璃的鱼时又会太亮(曝光过度),这时应重新调整快门和</span><span lang="EN-US"><font face="Times New Roman">ISO</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">,如果你的</span><span lang="EN-US"><font face="Times New Roman">DC</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">可调整闪光指数(强度)的话,也可同时调整,再反复试拍,直到最后确定正确的曝光值。至于拍摄时玻璃反光,可把相机镜头与玻璃形成一个</span><span lang="EN-US"><font face="Times New Roman">45-60</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">度的夹角,即可消除反光。感觉用了闪光灯后,对鱼缸光线不足是有极大改善的,拍出的照片清晰度大大提高,但同时原先的光影布局会完全被打破,拍出的鱼质感会显得生硬,不够自然,这就是很多鱼友所说的会显得失真。如果拍鱼缸的局部造景或全景就应关闭闪光灯,把快门速度降低,再不行可用三角架来稳定相机,这样拍出的照片会比较符合人眼视察的习惯。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><font face="Times New Roman">11</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、</span><span lang="EN-US"><font face="Times New Roman">DC</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">和单反的差别:除了上面所说的对焦速度外,</span><span lang="EN-US"><font face="Times New Roman">DC</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">和单反还有一处差异就是快门延迟,也就是说从您完全按下快门按钮到快门释放的时间差。单反几乎没有或者很短,而</span><span lang="EN-US"><font face="Times New Roman">DC</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">大概有</span><span lang="EN-US"><font face="Times New Roman">0.3</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">秒左右的延迟,时间长短和鱼缸内光线的明暗度有很大的关系。别小看了这</span><span lang="EN-US"><font face="Times New Roman">0.3</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">秒,往往是您好不容易抓住了一个绝好的机会按下快门,到照片出来时您会可怜地发现只抓到了一条鱼尾巴,很是郁闷。还有如果用闪光灯的话,单反的回电速度比</span><span lang="EN-US"><font face="Times New Roman">DC</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">快一大截,这对连续抓拍好处很大,因为不用等待。当然,最后的照片质量从整体上来说也应该是单反优秀(当然单反价格也优秀)。好在现在的相机都是数码的,按一下快门对您来说几乎是免费的,只要熟练掌握拍鱼技巧,多按快门,不管是</span><span lang="EN-US"><font face="Times New Roman">DC</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">还是单反,总有一张会是您满意的照片。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">总之,正确的曝光</span><span lang="EN-US"><font face="Times New Roman">+</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">对焦</span><span lang="EN-US"><font face="Times New Roman">+</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">铁手,咔嚓一声,清晰就是您的了!</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><font face="Times New Roman"></font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">四、拍摄时鱼的状态:</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">拍出一张清晰的照片只是成功了一半,由于拍摄的主体是动物</span><span lang="EN-US"><font face="Times New Roman">--</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">鱼,就要讲究它的状态。如果您的鱼整体状态不佳,那么,再好的摄影高手都是没有办法来搞定的。所以先要把您的鱼调整到最佳状态,这个我就不多费口舌了,三湖高手有很多成功的经验。我的体会是,首先要熟悉您缸中鱼的习性,三湖鲷是一种地域性很强的鱼类,一缸中往往有几条头鱼状态是最佳的,它们往往都有固定的领地,为了稳固它的地盘,每隔一段时间它们都会在相同的地点张鳍炫耀,这个时候就是您拍摄的最佳时机(可预先对焦)。或者您的缸中如果有公鱼突然发色发情,这个时候鱼的体色会异常的美丽,也是绝好的拍摄主体。平时应该多留心、多观察您的爱鱼,就一定能拍出层次清晰、造型美丽的照片。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">要知道,您的爱鱼只有您</span><span lang="EN-US"><font face="Times New Roman">--</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">鱼的主人最了解,也只有您能拍出您缸中鱼儿的最佳状态!</span></p>
[此贴子已经被作者于2008-1-9 14:01:39编辑过] |