Homepage › Forums › Gear & Links › Photography Equipment › Lenses › Upgraded Canon EF 100 – 400L IS USM Lens? This topic is empty. Upgraded Canon EF 100 – 400L IS USM Lens? Shutter BugMember September 22, 2009 at 3:31 pm I’m trying to sell my Canon EF 100 – 400L IS USM Lens. Been told that in the last year and a half or so the 100 – 400 Lens has had LD Glass (Low Dispersion Glass) added as an upgrade to the lens. I can’t find any info on it, and on Canon’s website it still has the same specs as my current lens. Does anyone here know anything about it? Thanx Viewing 1 post (of 1 total) You must be logged in to reply to this topic.