On 16/10/03, [EMAIL PROTECTED] disgorged: >Is the dust in-between the lens elements? How does it get there? >I have a ~20 yo 50mm Pentax A lens that doesn't have any dust >inside.
It is between certain groups of elements and the action of focussing can suck in / blow out miniscule amounts of dust in the air that must be able to move in and out of the lens, otherwise it would not work. Any lens acts like a small, slow pump - especially zooms. Which brings an interesting possibility - creating a vacuum inside............ Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche ||=====| www.macads.co.uk/snaps _____________________________ Free UK Mac Ads www.macads.co.uk
