Originally posted by Khukri I am looking to use a high quality TC. So may I seek the advice of Mo, pleo and others with experience of TCs, please: Seeing that 150/180mm macros in K mount are not available, I am considering the use of a TC with a Pentax 100mm or Tamron 90mm macro . May I know which TC would prove most suitable whilst ensuring that AF works - the Pentax 1.5x or 1.7x or any other? Why is the 1.7x not optically decent enough, pleo? Are the other Pentax TCs better and if so, why?
Thanks in advance for the answers!
The absolute best Pentax teleconverters would have the be the A 1.4x-L and A 2.0x-L, but they only work with 300mm lenses and above.
Your best bet for compact lenses is the A 2x-S. If you ever get it, compare it's giant rear element with that of any cheap TC!
The F 1.7x isn't as good as the other teleconverters, but it's still ahead of the competition. It's the only Pentax teleconverter that reatains full autofocus capabilities- all the others only retain aperture settings.
Adam
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