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Author Message   Bob_dodds Tinkerer Username: Bob_dodds Post Number: 2 Registered: 09-2007 Rating: N/A Votes: 0 Posted on Friday, September 21, 2007 - 02:40 pm:    I have to collimate 21mm, 50mm, 85mm, 180mm Zuiko by a change increment of +0.5mm Can I go that far by adjustment(no shim)? Do they all have the same adjustment mechanism? Where is it? What do I do? I have the tools. I adapted two so far to Sigma SA mount plates but I used a 0.5mm spacer. I would like to skip the spacer because that takes machining and drilling. Thanks.