Ok Jules - thanks. Maybe i should think about the next size up in that 3 tube Macro set
Exposure & metering is good enough, though i think i already have it, because i have already taken a shot without the macro tube contacts and got a fairly decent exposure
and also focus confirm, so perhaps i dont even need those contacts.
The macro tube will just be quite useful for mounting a TN, but they all have contacts on
Yes, as you say , not really needed.
It just so happens that my macro tubes have the contacts, and its one of those that i want to fit a TN inside
Yes i've seen those Jules, and used them on previous scopes for extension, but they're the threaded type. I know Paul used to use them and maybe still does, but i much prefer the bayonet mount extension tubes
The helical TC sounds like a great idea. I might have to have a hunt for one in the future
PS how did you mount the big VIV 6x7 Pentax MF TC ?