All Forum Comments
Comment by davidstorm posted on New Stranger Street Shots at 07/06/2014 - 12:05
Regards
David
Comment by davidstorm posted on Advice for shooting in the Lakes at 07/06/2014 - 01:05
Maybe someone with the appropriate technical knowledge can explain why this is the case. I do think the TC has all of the required contacts, but that there is probably a software issue somewhere that is preventing the focussing.
Regards
David
Comment by davidstorm posted on HD PENTAX DA AF 1.4X AW Rear Converter at 05/06/2014 - 09:04
Regards
David
Comment by davidstorm posted on Stepping back in time at 04/06/2014 - 18:32
If you search for threads about the Kenko Pz-af 1.5X Teleplus SHQ. It works to a degree with SDM/HSM lenses, but it does a lot of hunting.
Regards
David
Comment by davidstorm posted on HD PENTAX DA AF 1.4X AW Rear Converter at 04/06/2014 - 18:17
I have never known a teleconverter that works with HSM to at least attempt af with SDM.
The Pentax 1.4 TC works with both HSM and SDM, the Kenko 2x PZ-AF works with HSM, but not SDM and the contacts look the same. There must be a difference in the internal electronics.
Regards
David
Comment by davidstorm posted on HD PENTAX DA AF 1.4X AW Rear Converter at 04/06/2014 - 12:49
Regards
David
Comment by davidstorm posted on HD PENTAX DA AF 1.4X AW Rear Converter at 04/06/2014 - 12:38

And a very heavy crop of the stopwatch:

Hope this helps!
Regards
David
Comment by davidstorm posted on Wildlife lens quandary at 04/06/2014 - 12:26
This is a bit confusing, it certainly AF's with all my screwdrive lenses and with all HSM Siggy's, but not with the DA*300 and not with the DA*50-135 either. The contacts on the TC look to be identical to those on the latest Pentax 1.4 HD TC, so I would expect it to work. Could it be that Pentax have done something in the latest firmware updates to disable non Pentax AF TC's? Does anyone have any other ideas why this TC will not activate the SDM?
Regards
David
Comment by davidstorm posted on HD PENTAX DA AF 1.4X AW Rear Converter at 04/06/2014 - 12:15
Regards
David
Comment by davidstorm posted on Perth Zoo Critters at 04/06/2014 - 11:49


Regards
David