[barondla]

It only achieves 1/2 Lifesize magnification. Will the Pentax 645 extension tubes work in manual focus with this lens, on the 645Z? How about the teleconverters?
Thanks,
barondla

[phat_bog]

hi Barondla, i'll test to confirm this in a day or two . until then i dont't see why auto aperture wouldn't work with the TC and the extension tubes. Otherwise , what's for sure , the helicoid adapter won't work for aperture control. i do ask myself at what extent the internal Shake reduction will be effective with tubes or extenders

[sculptor666]

yes ext tubes work on all lenses