When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
...the focus muscle (can't remember the proper name)...
Without googling, and trying to recall my O-Level Biology lol, I think it's called the cililary (sp?) muscle. The lens is suspended in it, and the muscle (either side of the lens) contracts/expands to squash/elongate the lens so as to alter the focal length.
Last edited by joz8968; 28 April 2015 at 12:44 PM.
28 April 2015, 12:41 PM
