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===About Focusing===
: An [[image]] can be [[focus]]ed moving the position of a [[lens]] compared to the [[object]].
===References===
====OCR====
:[https://www.amazon.co.uk/gp/product/0198359810/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359810&linkCode=as2&tag=nrjc-21&linkId=d768d99f1a06f7c12fab40e5aef85a55 ''Focus, page 92, Gateway GCSE Biology, Oxford, OCR '']