All Forum Comments
Comment by davidstorm posted on 2017 at 11/01/2018 - 21:04
Regards
David
Comment by davidstorm posted on 2017 review at 11/01/2018 - 20:59
Is the following survey the best we have (provided the results are treated as indicative rather than gospel)?
https://www.pentaxforums.com/articles/photo-articles/pentax-sdm-failure-survey-r...
SDM implementation on certain lenses does (did? — the survey was five years ago) seem to be questionable. The 16-50, 17-70: and 50-135 stand out, not in a good way. There are all sorts of cautions and caveats that need to attach to the figures, but the results of the limited survey don’t strike me as inherently implausible.
Regards
David
Comment by davidstorm posted on SDM Failure at 10/01/2018 - 22:23
1. Rhodes

2. Mykonos

3. Rhodes

4. Mykonos

5. Mykonos

6. Mykonos

7. Mykonos

Thanks for looking.
Regards
David
Comment by davidstorm posted on I don't have enough 2017 shots, so.... at 10/01/2018 - 21:25
This stems from some early problems with a design fault in a couple of SDM lenses and it was tackled years ago by Pentax. There will always be some failures of any item, but SDM should be as fine as any other focusing system motor. WE haven't heard much about the issue for a very long time.
The users on here are not stupid, we make our own minds up about these things. It's a shame because in other regards these lenses are superb and for me it's worth taking the risk. My 50-135 is on its way out, after having been repaired once with the 'updated' motor that supposedly fixed the issue.........
I think I speak with the majority of view on this subject?
Regards
David
Comment by davidstorm posted on SDM Failure at 09/01/2018 - 20:54
Regards
David
Comment by davidstorm posted on 2017 Calendar of Images at 09/01/2018 - 20:47
Regards
David
Comment by davidstorm posted on My 2017 one a month year, 13 photographs!!? at 09/01/2018 - 20:45
Regards
David
Comment by davidstorm posted on Some 2017 Favourites at 09/01/2018 - 20:42
Regards
David
Comment by davidstorm posted on A little light experiment at 06/01/2018 - 23:37
Regards
David
Comment by davidstorm posted on Is Flickr Dying at 24/12/2017 - 11:08


There's no denying the quality of this set as a whole, funnily enough number 11 stands out for me as it appeals to my quirky side!
Regards
David