照相机的微距功能主要作用是什么?
照相机的微距功能主要作用是什么啊?
推荐回答(5个)
相机微距功能的作用是使相机缩短最近对焦距离,拍摄更近的景物。
具体操作如下:
第一,因物距与景深成正比,而微距的物距很短,故景深就很小。所以在调焦时要力求准确,并尽量使用小光圈,以增加景深长度(有意虚化除外);
第二,由于使用小光圈,而且像距较长,故曝光时间就会相对较长,
所以最好使用三角架或翻拍架来固定好数码相机,为了防止相机的震动,可使用相机上的自拍功能;
第三,在一般情况下不要使用闪光灯,因为物距太小,闪光灯的光线会不太均匀,如果被拍物体表面光滑还会产生反光而不好控制;
第四,微距镜头给近距离拍摄较小物体提供了方便,但使用微距镜头进行微距拍摄时,景深很小,聚焦要十分仔细,离物体越近,对焦中允许的失误就越少,因此要尽可能将照相机架在三脚架或翻拍架上拍摄,而且也不要忘记使用同步线来释放快门。
你首先必须了解几个专业术语:光圈、景深、焦距。
光圈是相机镜头中对相机中感光介质曝光量进行控制的机构,光圈大(数值小)光通量就大,光圈小(光圈数值大)光通量就小。
景深:是指相机成像清晰度的纵深范围。景深大是指在从近到远的成像清晰范围大,景深小是指从近到远的成像清晰范围小。
焦距:是指景物聚焦在相机感光介质上时与镜头间的距离。
这其中,光圈的大小与相机镜头的景深有着密切关系:光圈越大,景深范围越小,也就是说,只有在聚焦点前后很小范围内的景物是清晰的,其余范围的景物则是模糊的。反之,光圈越小,景深范围越大。
因此,如果你的相机具有光圈优先的功能,适当控制感光度,就可以使光圈开到较大的程度(可以从控制窗口中看到光圈数值),那么你就可以拍摄出小景深范围的相片。
微距功能是指用来拍摄距离相机镜头非常近的细小景物的功能,通常其距离只有几厘米。比如拍摄昆虫、花朵等等。由于相机处于微距功能时的景深范围很小,因此,拍摄出来的画面通常是背景虚化的。
拍近处的物体,体现细节微距功能是不能放大的,最多是1:1;能放大的就不是微距了使用微距是最主要的是对焦,数码相机时常自动对焦会找不到焦点,需要手动对焦普通数码相机拍太小的东东(比如蚂蚁)还是会拍不清楚,跟镜头有关,适合拍花花草草
楼上的比如真的很恰当,的确微距功能就是拍离镜头很近的物体。
微距摄影的目的是力求将主体的细节纤毫毕现的表现出来,把细微的部分巨细无遗的呈现在眼前。
放大缩小啊... 比如想拍蚂蚁就把手机靠近地上.再把"镜头放大" 拍到的更大一些.
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