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View Full Version : How to Loosen 400mm f/2.8 Tripod Collar?


Ben C
3rd of December 2004 (Fri), 09:45
Hi, Everyone, Lately I noticed that my 400mm f/2.8 IS lens’ collar is very stiff. Yet, when the lens is not mount on a monopod, the tripod collar seems to rotate freely; but once the lens is mounted, I think because it now has to support the weight of the lens, it is stiff. Is there any way to lube or otherwise loosen it? TIA. Ben