Pentax F1.7 AF TC
Works great with the K series lenses I've tried it with, though I use it mainly to boost the DA*300.
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Pentax 1.7 AF TC + DA*300mm

If I understood Ge'ez (ancient Ethiopian) I could easily read the writing in the bible he's holding in the original (not downsized for PUF) version of this photo - the TC causes barely any diminution in IQ.
For anyone checking the EXIF the focal length is indicated as 120mm as this was manually selected for stabilisation purposes (you have this option when you turn the camera on with the TC + lens attached).
Mhuni
500px
Dr. Mhuni
Member
Geneva
Looking for £240 (or the equivalent in Euros or Swiss Francs). I can post from either the UK or France, where I'm currently living. If someone wants to collect in person they can do so from Haute Savoie, France - just over the border from Geneva - or London (where I'll be from 1st-5th Jan.).
Mhuni
500px