To Filter lens Or Not? - Page 7
PhotoCamel: Your friendly photo community, with free discussion forums, digital photography reviews, photo sharing, galleries, downloads, blogs, photography contests, and prizes.
 

Go Back   PhotoCamel - Your Friendly Photography Forum > Tools Of the Trade > Camera Accessories

Reply
 
LinkBack Thread Tools Display Modes
Old 05-16-2012   #61
Guanaco
 
Preeb's Avatar
 
Location: Logan County, Colorado
Posts: 457
CamelKarma: 371548
Editing OK?: Yes
Constructive Critique?: Yes
Default Re: To Filter lens Or Not?

Quote:
Originally Posted by w7apd View Post
You may be right; after all, Canon only marketed their first fluorite lens 38 years ago.
Actually it was in 1969 (FL-F300mm f5.6) according to a Canon Professional Network article. Makes it 43 years ago.

Also fluorite lens elements are too fragile to be used as the end element in a camera lens. If such is required, then the fluorite is typically protected by an outer layer of optical glass. I don't know if they ever produced a camera lens with an exposed fluorite element. Fluorite is difficult to grind because of its fragility, which is why lenses using it cost so much more than those with ultra low dispersion glass. Many Canon L lenses use both, and it's my understanding that the fluorite is an internal element.


__________________
Members don't see ads in threads. Register for your free account today and become a member of PhotoCamel to open up the site's many benefits and features.
__________________
Rick

Canon 60D -- EF 70-200 f4 L IS -- EF 100mm f2.8 L IS Macro -- EF-S 60mm f2.8 Macro -- EF-S 17-55 f2.8 IS USM -- EF-S 10-22 f3.5-f4.5 USM.
Preeb is offline   Reply With Quote
Reply

« PhotoCamel - Your Friendly Photography Forum > Tools Of the Trade > Camera Accessories »


Share this topic:

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Lens Blur Filter raghunath Landscape & Travel 6 04-23-2012 10:40 PM
Vignetting with a filter and an ultrawide lens supervillain Camera Accessories 8 10-23-2009 09:24 PM
My Comment on Filter to Protect Lens LandJRock Photography Talk 22 05-29-2008 10:31 PM
Whats filter is on the front of your lens ? mikew Camera Accessories 23 07-19-2006 01:14 AM
Lens Filter Ron Harmon Photography Talk 8 09-12-2005 05:46 AM