Recently I've read a few for sale posts where the sellers indicate "tiny dust spots but does not affect IQ". I was always under the impression that "L" lenses are sealed from the elements. Any comments?
JamesEmory Senior Member  857 posts Joined Nov 2009 Location: Bay City, MI More info | May 20, 2011 09:28 | #1 Recently I've read a few for sale posts where the sellers indicate "tiny dust spots but does not affect IQ". I was always under the impression that "L" lenses are sealed from the elements. Any comments? James Emory
LOG IN TO REPLY |
May 20, 2011 09:56 | #2 Unless you are talking about the super tele's, no L lens is sealed. You have to add a filter to fully seal it. Even then, many many L lenses have no weather sealing. They are built to tighter tolerances...but not dust immune. Please visit my Flickr
LOG IN TO REPLY |
May 20, 2011 10:05 | #3 Sdiver2489 wrote in post #12446246  Unless you are talking about the super tele's, no L lens is sealed. You have to add a filter to fully seal it. Even then, many many L lenses have no weather sealing. They are built to tighter tolerances...but not dust immune. Did not know this, thought all "L's" were sealed against the elements. They were not the super telees but were 17-40L's. James Emory
LOG IN TO REPLY |
May 20, 2011 10:06 | #4 James Emory wrote in post #12446289 Did not know this, thought all "L's" were sealed against the elements. They were not the super telees but were 17-40L's. The 17-40 is weather sealed but needs a filter to complete the sealing. Please visit my Flickr
LOG IN TO REPLY |
May 20, 2011 10:10 | #5 Sdiver2489 wrote in post #12446299 The 17-40 is weather sealed but needs a filter to complete the sealing. Gotcha. James Emory
LOG IN TO REPLY |
Sir_Loin Senior Member  More info | May 20, 2011 10:39 | #6 Sdiver2489 wrote in post #12446246 Unless you are talking about the super tele's, no L lens is sealed. You have to add a filter to fully seal it. Even then, many many L lenses have no weather sealing. They are built to tighter tolerances...but not dust immune. Two L lenses need filters to complete weather sealing; 17-40mm and 50mm f/1.2 EOS 1D4, 5D3, EF 24-70mm f/2.8L II, EF 70-200mm f/2.8L II IS, EF 50mm f/1.8 STM, EF 85mm f/1.2L II * EOS R6, RF 24-105mm f/4.0-7.1 * EOS M5, EF-M 11-22mm f/4.0-5.6 IS, EF-M 18-55mm f/3.5-5.6 IS, EF-M 55-200mm f/4.5-6.3 IS, EF-M 22mm f/2.0, EF-M 28mm f/3.5 Macro IS * FL-F 300mm f/5.6 FLUORITE, FD 55mm f/1.2 ASPHERICAL, FD 24-35mm f/3.5L, FD 50mm f/1.2L, FD 300mm f/2.8L, FD 50-300mm f/4.5L
LOG IN TO REPLY |
May 20, 2011 10:43 | #7 Sir_Loin wrote in post #12446506 Two L lenses need filters to complete weather sealing; 17-40mm and 50mm f/1.2 As for no L lens is sealed apart from the super tele's is incorrect. Off the top of my head, the 14mm f/2.8L II, 24mm f/1.4L II, 100mm f/2.8L, 8-15mm, 24-105mm, 70-200mm f/2.8 IS II and f/4.0 IS and the big whites are fully sealed as is. Though the not 300mm f/4.0 IS or 400mm f/5.6. There's probably more, but I'm not going to start doing research!  That's news to me...Thanks! Please visit my Flickr
LOG IN TO REPLY |
May 20, 2011 11:15 | #8 Sir_Loin wrote in post #12446506 Two L lenses need filters to complete weather sealing; 17-40mm and 50mm f/1.2 As for no L lens is sealed apart from the super tele's is incorrect. Off the top of my head, the 14mm f/2.8L II, 24mm f/1.4L II, 100mm f/2.8L, 8-15mm, 24-105mm, 70-200mm f/2.8 IS II and f/4.0 IS and the big whites are weather sealed as is. Though the not 300mm f/4.0 IS or 400mm f/5.6. There's probably more, but I'm not going to start doing research! Slight dust in a lens is nothing to worry about anyway. Some even have a tiny bit when brand new and you can guarantee some will find a way in there somehow. Mainly lenses where the rear elements move when focussing or zooming. Nice to know this, thanks. Now, do you have any suggestions as to where I can get money to buy a couple of L lenses? James Emory
LOG IN TO REPLY |
May 20, 2011 11:40 | #9 James Emory wrote in post #12446088 Recently I've read a few for sale posts where the sellers indicate "tiny dust spots but does not affect IQ". I was always under the impression that "L" lenses are sealed from the elements. Any comments? The 100-400 for instance is just a big air pump with a leather like seal that will wear and crumble given enough time and temperature extremes. Because dust spots on lens elements are not on the focal plane, they seldom cause image problems unless they're huge goobers. Gear List
LOG IN TO REPLY |
 | x 1600 |
| y 1600 |
| Log in Not a member yet?
Register to forums
Registered members may log in to forums and access all the features: full search, image upload, follow forums, own gear list and ratings, likes, more forums, private messaging, thread follow, notifications, own gallery, all settings, view hosted photos, own reviews, see more and do more... and all is free. Don't be a stranger - register now and start posting!
|
| ||
| Latest registered member is Marcsaa 1341 guests, 122 members online Simultaneous users record so far is 15,144, that happened on Nov 22, 2018 | |||
