Quote:
Originally Posted by Merlin66
Astro,
The T thread adaptor is for rigid connection to the camera. It also reduces the backfocus overhang. There's no "correct spacing"
I've had a few PM's over the years and still use the x2.5.
My x2.5 is a smooth barrel with a filter thread. I've never seen the stepped barrel.
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the TV is sounding more like the right way to go.... but at a big cost