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screw to m adapters


dseelig

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I've do not know why the cut out is there on current adapters but it will be an extra machining step they could just miss out. That would be handy, especially if the machining happened to leave... err... 6 small pits in the surface instead.

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I've do not know why the cut out is there on current adapters but it will be an extra machining step they could just miss out. That would be handy, especially if the machining happened to leave... err... 6 small pits in the surface instead.

 

Six small pits may well be a patent infringement. A long slot would probably slip by.

 

The old man from the Age of the Screw-Mount

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I've do not know why the cut out is there on current adapters but it will be an extra machining step they could just miss out. That would be handy, especially if the machining happened to leave... err... 6 small pits in the surface instead.

 

The reason usually given for the recess is that it is required to clear the infinity lock that was used in the collapsible lenses of the 1950s. But my collapsible 50 Summicron has the push-in infinity lock, and a wide base. The push-in doesn't seem to push very far. Picture attached.

 

scott

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Six small pits may well be a patent infringement.......]

 

Lars - This view has been asserted a number of times on the forum, and I cannot recall it being challenged. Whilst the Leica coding will be patented, I don't see how six well placed drill holes in a flange can infringe an intellectual property. I'd like to see a definitive reply to your assertion from someone with legal knowledge of IP.

 

........................Chris

 

The tetchy git without his camera in the pub for bar-room lawyers.

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Thanks for the tip...

At the moment I saw your post, I went on eBay and snatched newly listed 13.5cm adapter as "buy it now" for $50.00 plus shipping ...

:D :D :D

 

That's a great price in the current market.

 

Great tip David!

 

Cheers,

 

Sean

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I do not need that focal length and I did not want to make a profit off of it. I get alot out of this forum and wanted to pass along to someone here who what need the adapter. Mind you I have 2 step kids in college and I I,m quite broke but the value I get ehre is enoprmous. So glad I could apss along a good tip . David P.S. There was another adapter suitable for 6 bit coding along wiht a cutaway adapter for sale on ebay no buy it now David

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