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Author Message   Aemb04 Tinkerer Username: Aemb04 Post Number: 8 Registered: 04-2013 Rating: N/A Votes: 0 Posted on Monday, June 10, 2013 - 04:50 pm:    Hello Clie, I just used my fingers to unscrew the front name plate which goes down into the front of the lens like a cone shape, you may have to use a piece of rubber to grip it if its stuck. Behind this you then have another locking cone shaped ring which you will need a lens spanner to undo (got mine on ebay for £12). Once this is removed the front element can be taken out. Thanks Jdvores for the explanation about Helicoids .