Monday, 20 February 2017

How close can a lens focus?


From my understanding, if you want to do some macro photography it is better to have a lens that can focus when it is really close to the subject. Sometimes people buy extension tubes to help them achieve this.


My question is: how do I tell before buying a lens how closely it can focus. This doesn't seem to be one of the standard properties listed in the lens name except for maybe when a lens says "macro".



Answer



This is called Minimum Focusing Distance. It is measured from the film/sensor plane. Usually it's printed on the lens ( next to a flower icon ).


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