teleconverter question
Posted 04/01/2009 - 11:03
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chirpy wrote:
I just checked mine again on all my SDM lenses and no luck. I get the MF symbol flickering in the viewfinder :Clarky wrote:
Chirpy, My Kenko 1.5 has the PZ designation and the power zoom contacts but still does not work with SDM.
I will experiment a little more with it and try it on my DA*16-50.
Odd. Mine definitely does work on the 300mm - I just tested it again.Chirpy, My Kenko 1.5 has the PZ designation and the power zoom contacts but still does not work with SDM.
I will experiment a little more with it and try it on my DA*16-50.
I gave all the contacts a good clean and still nothing. I wonder if mine is faulty :
Camera:|K-7|
Pentax Lenses:|DA12-24/f4 ED AL|DA35Ltd Macro|FA31Ltd|FA77Ltd|FA50/1.4|F70-210|FA20-35 f4/AL|A*200/f4 Macro ED|A50/1.7|A50 Macro f2.8|1.7xAF adapter|
Voigtlander|125/f2.5SL Macro APO Lanthar|
Sigma Lenses:|EX DG 100-300 f4|2X & 1.4X TC|
Flashes:|AF540FGZx2|RingFlash AF160FC|
Pentax Lenses:|DA12-24/f4 ED AL|DA35Ltd Macro|FA31Ltd|FA77Ltd|FA50/1.4|F70-210|FA20-35 f4/AL|A*200/f4 Macro ED|A50/1.7|A50 Macro f2.8|1.7xAF adapter|
Voigtlander|125/f2.5SL Macro APO Lanthar|
Sigma Lenses:|EX DG 100-300 f4|2X & 1.4X TC|
Flashes:|AF540FGZx2|RingFlash AF160FC|
Posted 21/01/2009 - 20:52
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chirpy wrote:
i have a Kenco PzAF 1.5 and just tried it on my new DA17-70 with no luck. Clarky wrote:
Chirpy, My Kenko 1.5 has the PZ designation and the power zoom contacts but still does not work with SDM.
I will experiment a little more with it and try it on my DA*16-50.
Odd. Mine definitely does work on the 300mm - I just tested it again.Chirpy, My Kenko 1.5 has the PZ designation and the power zoom contacts but still does not work with SDM.
I will experiment a little more with it and try it on my DA*16-50.
When i Ordered the lens from SRS, Chris said (if i understood him correctley) that the 17-70 was the first SDM only lens. so maybe 16-50's etc would still focus using the camera motor.
I did check and clean the two sets of contacts in the Kenco that match the SDM but still no Joy
Barrie - Too Old To Die Young
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Posted 21/01/2009 - 23:22
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Quote:
I did check and clean the two sets of contacts in the Kenco that match the SDM but still no Joy
you could try testing the path from front to back thru the TC's SDM contacts by using a multimeter ? I did check and clean the two sets of contacts in the Kenco that match the SDM but still no Joy
(might be worth checking with Kenko b4 doing that in case there's a microchip in the TC - not sure how sensitive it would be to the applied volts/current)
Posted 22/01/2009 - 01:13
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bladerunneruk wrote:
(might be worth checking with Kenko b4 doing that in case there's a microchip in the TC - not sure how sensitive it would be to the applied volts/current)
Spot on. Multimeter Showed no path. i've had the coverter apart now and the reason is clear. They are not connected, the contacts are on both sides of the converter but Kenko have not seen fit to join them up.
Quote:
I did check and clean the two sets of contacts in the Kenco that match the SDM but still no Joy
you could try testing the path from front to back thru the TC's SDM contacts by using a multimeter ? I did check and clean the two sets of contacts in the Kenco that match the SDM but still no Joy
(might be worth checking with Kenko b4 doing that in case there's a microchip in the TC - not sure how sensitive it would be to the applied volts/current)
Barrie - Too Old To Die Young
https://pentaxphotogallery.com/artists/barrieforbes
https://www.flickr.com/photos/189482630@N03/
https://pentaxphotogallery.com/artists/barrieforbes
https://www.flickr.com/photos/189482630@N03/
Posted 22/01/2009 - 10:55
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I guess I got luck with my Kenko 1.5 TC as they are connected on mine.
Posted 22/01/2009 - 13:56
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bforbes wrote:
Spot on. Multimeter Showed no path. i've had the coverter apart now and the reason is clear. They are not connected, the contacts are on both sides of the converter but Kenko have not seen fit to join them up.
wow, determined to get to the bottom of the problem eh ??!! Spot on. Multimeter Showed no path. i've had the coverter apart now and the reason is clear. They are not connected, the contacts are on both sides of the converter but Kenko have not seen fit to join them up.
Maybe Kenko thought the pins looked nice ??!!
Does the TC have "Pz-AF" on the barrel too ? If so then it seems like a clear case for return under the sale of goods act. (well at least until you took it apart !)
Posted 22/01/2009 - 14:42
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bforbes wrote:
Maybe it's faulty, rather than a production decision by Kenko?bladerunneruk wrote:
(might be worth checking with Kenko b4 doing that in case there's a microchip in the TC - not sure how sensitive it would be to the applied volts/current)
Spot on. Multimeter Showed no path. i've had the coverter apart now and the reason is clear. They are not connected, the contacts are on both sides of the converter but Kenko have not seen fit to join them up.Quote:
I did check and clean the two sets of contacts in the Kenco that match the SDM but still no Joy
you could try testing the path from front to back thru the TC's SDM contacts by using a multimeter ? I did check and clean the two sets of contacts in the Kenco that match the SDM but still no Joy
(might be worth checking with Kenko b4 doing that in case there's a microchip in the TC - not sure how sensitive it would be to the applied volts/current)
I had the Kenko 1.5x too, and that had the two 'power zoom' contacts on it as well, which drove my HSM & SDM lenses no problem.
Posted 22/01/2009 - 18:53
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Does the TC have "Pz-AF" on the barrel too ? If so then it seems like a clear case for return under the sale of goods act. (well at least until you took it apart !)[/quote]Yes it does have Pz-AF on the barrel and it does auto focus, both before and after i took it apart, but using the camera's mechanical drive.
Barrie - Too Old To Die Young
https://pentaxphotogallery.com/artists/barrieforbes
https://www.flickr.com/photos/189482630@N03/
https://pentaxphotogallery.com/artists/barrieforbes
https://www.flickr.com/photos/189482630@N03/
Posted 22/01/2009 - 19:01
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I had the Kenko 1.5x too, and that had the two 'power zoom' contacts on it as well, which drove my HSM & SDM lenses no problem.[/quote]Hi Tooks
how long ago were you using the 1.5x? Mine must be getting on for two years old. Were you lenses HSM-SDM only if they still had a mechanical drive would the 1.5x not just use that to focus
how long ago were you using the 1.5x? Mine must be getting on for two years old. Were you lenses HSM-SDM only if they still had a mechanical drive would the 1.5x not just use that to focus
Barrie - Too Old To Die Young
https://pentaxphotogallery.com/artists/barrieforbes
https://www.flickr.com/photos/189482630@N03/
https://pentaxphotogallery.com/artists/barrieforbes
https://www.flickr.com/photos/189482630@N03/
Posted 22/01/2009 - 19:17
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bforbes wrote:
I had the Kenko 1.5x too, and that had the two 'power zoom' contacts on it as well, which drove my HSM & SDM lenses no problem.
Hi Tooks
how long ago were you using the 1.5x? Mine must be getting on for two years old. Were you lenses HSM-SDM only if they still had a mechanical drive would the 1.5x not just use that to focus
I purchased mine probably around a year ago from memory. New stock from SRS.I had the Kenko 1.5x too, and that had the two 'power zoom' contacts on it as well, which drove my HSM & SDM lenses no problem.
Hi Tooks
how long ago were you using the 1.5x? Mine must be getting on for two years old. Were you lenses HSM-SDM only if they still had a mechanical drive would the 1.5x not just use that to focus
The Sigma 70-200 HSM II and Pentax 17-70 SDM lenses I used it on didn't have mechanical drives, so could only use HSM/SDM.
Posted 22/01/2009 - 21:12
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Mine is also around a year (/year and a half) old and purchased new from warehouseexpress.com. It definitely uses the SDM motor on my DA* 300mm and K20D.
I don't know whether having a fully charged battery in the camera would be a good idea incase that has a bearing on whether the power gets through or not - obviously it's not going to get through if yours doesn't connect all the way.
I don't know whether having a fully charged battery in the camera would be a good idea incase that has a bearing on whether the power gets through or not - obviously it's not going to get through if yours doesn't connect all the way.
Posted 22/01/2009 - 21:59
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Been checking and mine is just out of 12 month warranty, but it makes no difference as the company has gone bust. an email has been sent to see if i can get the parts from Kenko
Barrie - Too Old To Die Young
https://pentaxphotogallery.com/artists/barrieforbes
https://www.flickr.com/photos/189482630@N03/
https://pentaxphotogallery.com/artists/barrieforbes
https://www.flickr.com/photos/189482630@N03/
Posted 23/01/2009 - 09:31
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johnriley wrote:
The details of the subject are there, but I wouldn't call it sharp really. The outlines are rather fuzzy and the contrast is quite low as well.
True, but I thought the result was good considering it was budget equipment at 450mm handheld without Shake Reduction.
The details of the subject are there, but I wouldn't call it sharp really. The outlines are rather fuzzy and the contrast is quite low as well.
~Pete
Posted 23/01/2009 - 10:20
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Maybe so, iceblinker, but it's no way to test a lens. It ends up telling us nothing.
Best regards, John
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24430 posts
24 years
Tyldesley,
Manchester
TCs have never been famous for crispness, although there are some very expensive marque converters for specific lenses that are critically sharp.