如果你对这个真的很在乎，我听说有摄影师通过在野餐桌上纵向排列杯子来估测景深范围的。
If you're really serious about this, I've even heard of photographers setting out cups length-wise on a picnic table to estimate the distances you start to loose focus.
如果你对这个真的很在乎，我听说有摄影师通过在野餐桌上纵向排列杯子来估测景深范围的。
If you're really serious about this, I've even heard of photographers setting out cups length-wise on a picnic table to estimate the distances you start to loose focus.
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