拍照提示：时刻备有羊毛的镜头清洁布，这是很明智的选择。
Photo Tip: it's always wise to have a good chamois lens cleaner with you.
我通常使用镜头清洁布或者量块清洁布，尽管我倾向为每个提高一份清洁布。
I generally use a lens cleaning cloth or one of the cloths supplied for cleaning Gauge block sets, although I tend to keep the cloths bespoke for each use.
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