[alistairsam]

Originally Posted by Merlin66

Alistair,
A T thread is M42 x 0.75, much smaller diamete than the M48 filter thread.

Thanks Ken,
always confuses me.
is the T2 the same as a T?
isn't M48 the same as a 2inch nosepiece?

in short, which adaptor will I need from SX to fit the sbig's T thread?
will the T2 male work?

http://www.sxccd.com/sx-usb-filter-wheel

Thanks
Alistair