From: Ray Fischer on 3 Jan 2010 14:11 Rich <none(a)nowhere.com> wrote: >Robert Coe <bob(a)1776.COM> wrote in >> Paul Furman <paul-@-edgehill.net> >>: > Don't be snarky. Rich has no particular reason to know the >>: > difference berween aperture and focal length. Neither of them is >>: > made of plastic. >>: >>: I disassembled a 28-200 old-ish film super-zoom and it has plastic >>: aperture blades. I wouldn't be surprised if that's used in high end >>: lenses too. >> >> They wouldn't rust, and you might not have to oil them. And oil that >> isn't there won't drip onto a lens element. > >The more moving plastic parts in a lens, the greater the problems from >plastic dust, which is WAY worse than metal dust as it is static charged, Where did you get your degree in materials engineering? -- Ray Fischer rfischer(a)sonic.net
From: Peter Huebner on 14 Jan 2010 05:50 In article <4B4EBE6B.E8507DEC(a)concentric.net>, jtur(a)concentric.net says... > > Yes, indeed; I constantly dream of owning a Samyang "object lens," with > those fantastic "coutings" adorning it. > I've never been able to quite grasp how a company that's spent hundreds of thousands or millions on a production line, and piles on r&d, will balk at a few thousand for a good translator. It grates even more when I see authors, who after all should be considered professionals, try to use foreign language in a novel and fail to adequately get syntax, grammar, and spelling checked. -P.
From: Chris Malcolm on 14 Jan 2010 06:38 Peter Huebner <no.one(a)this.address> wrote: > In article <4B4EBE6B.E8507DEC(a)concentric.net>, jtur(a)concentric.net > says... >> >> Yes, indeed; I constantly dream of owning a Samyang "object lens," with >> those fantastic "coutings" adorning it. >> > I've never been able to quite grasp how a company that's spent hundreds > of thousands or millions on a production line, and piles on r&d, will > balk at a few thousand for a good translator. > It grates even more when I see authors, who after all should be > considered professionals, try to use foreign language in a novel and > fail to adequately get syntax, grammar, and spelling checked. It grates even more when they make a mess of their native language :-) Spell checkers mean that they rarely spell the words wrongly these days, but instead just spell the wrong word right :-) -- Chris Malcolm
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