Thread: Starlight MX7C
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Old 08-01-2006, 07:49 AM
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Merlin66 (Ken)
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Join Date: Oct 2005
Location: St Leonards, Vic
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T-mounts v's M42 threads

Finally figured it out. The normal T ring adaptors are the TAMRON version of a 42mm thread to allow their lenses to fit all cameras. This has become the defacto standard for lens adaptors and is used on most of the astronomical photographic adaptors ie Meade flip mirror etc.

The M42 thread is the original PENTAX camera/ lens thread. So, like any other camera you need a T-ring to M42 adaptor!!.

Confusion was the thread diameter which are similar, but the thread pitch is completely different. The Starlight camera's use the M42 thread NOT the T-mount thread.
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