Some random pics from Twickenham...

Started May 15, 2012 | Discussions thread
DaSigmaGuy
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Re: Some random pics from Twickenham...
In reply to teham, May 15, 2012

teham wrote:

Nope...I just machined 2mm off the mounting boss, screwed the SA mounting plate on and infinity was spot on. Maybe I just got lucky?

It this possible doing with the lens intact or do you have to dissect it?

TerjeH

I did it with the lens intact...After I removed the FL mounting plate I covered it with a thick cloth rag held on with PVC tape. The rear element tube was covered in some thick paper cut from a toilet roll and that was held on with PVC tape too.

I clamped it in the lathe chuck in such a way that the three jaws fitted perfectly into three of the conveniently spaced scallops in the aperture dial...Of course I had to make sure I didn't overtighten the chuck, and I had to use just enough pressure to hold the lens firmly in the chuck.

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