Super Program + Viv S1 70-210mm w/ A setting = no auto aperture

deadwolfbones · 04-20-2009, 04:58 PM

Kind of an odd one...

Other A-lenses work fine on the Super Program (have auto-aperture functions in Program mode), but the Vivitar Series 1 70-210mm v3 doesn't.

However, the Viv S1 DOES work in program mode on the K20D.

Any ideas as to what's going wrong? I'm pretty certain the Viv S1 once DID work on the Super Program, but it sure isn't now.

Thanks!

deadwolfbones · 04-22-2009, 11:10 AM

Nobody, eh?

ajuett · 04-22-2009, 11:54 AM

Version 3 of the Vivitar Series 1 70-210mm

Note 2: Pentax-specific: The presence of the of the "A" setting, in addition to its high resolution, is what makes version 3 so desirable today, but Vivitar/Komine only added this feature part way through the production run so not all version 3 lenses have it: Be sure to check before buying.

see details here: Vivitar 70-210 Series 1 Macro Zoom Lenses - Mark Roberts Photography

-

Steinback · 04-22-2009, 12:19 PM

Maybe a slight difference in tolerances keeping the lens contacts from touching the Super Program body properly even though they are fine on the K20? I would start by making sure the contacts are clean and maybe seeing if wiggling the Vivitar around a bit when it is on the film body changes anything. I can't offer any specific fix, that isn't an issue I've run into before (my film bodies both have completely manual mounts).

deadwolfbones · 04-22-2009, 04:03 PM

Originally posted by ajuett

Version 3 of the Vivitar Series 1 70-210mm

Note 2: Pentax-specific: The presence of the of the "A" setting, in addition to its high resolution, is what makes version 3 so desirable today, but Vivitar/Komine only added this feature part way through the production run so not all version 3 lenses have it: Be sure to check before buying.

see details here: Vivitar 70-210 Series 1 Macro Zoom Lenses - Mark Roberts Photography

-

Yes, that's the version I have.

Originally posted by Steinback

Maybe a slight difference in tolerances keeping the lens contacts from touching the Super Program body properly even though they are fine on the K20? I would start by making sure the contacts are clean and maybe seeing if wiggling the Vivitar around a bit when it is on the film body changes anything. I can't offer any specific fix, that isn't an issue I've run into before (my film bodies both have completely manual mounts).

Yeah, I thought about that and I'll try it tonight. Just seems very, very strange to me. Must be something that simple.

ajuett · 04-22-2009, 05:00 PM

Originally posted by deadwolfbones

Yes, that's the version I have.

Does your Version 3 have the 'A' setting or not? As there seems to be 2 versions of Version 3 according to that site.

deadwolfbones · 04-22-2009, 05:42 PM

Originally posted by ajuett

Does your Version 3 have the 'A' setting or not? As there seems to be 2 versions of Version 3 according to that site.

Yes, it has the A-setting. Hence my use of "other A-lenses" in the first post, and noting the fact that it works in program mode on the K20D.

deadwolfbones · 04-22-2009, 05:54 PM

Welp, I just thoroughly cleaned the contacts, got no response.

So I started pressing down on the lens against the mount and got intermittent program mode. The slightest movement would cause it to go into or out of program mode.

So I guess, as Steinback suggested, the tolerances are just a tiny bit off. Anyone have any suggestions as to what to do about this? Can the pin be extended somehow?

fwcetus · 04-23-2009, 05:44 AM

Originally posted by deadwolfbones

Welp, I just thoroughly cleaned the contacts, got no response.

So I started pressing down on the lens against the mount and got intermittent program mode. The slightest movement would cause it to go into or out of program mode.

Perhaps squirting a ~tiny~ bit of old-fashioned "TV tuner cleaner" (Radio Shack?) into the pin's socket (or, maybe even a drop of 90% isopropyl/"rubbing" alcohol), and then working the pin in/out/back/forth/etc., is worth a try. Perhaps the intermittency is just within the mount, and not at the interface between lens and body (?).

deadwolfbones · 04-23-2009, 07:56 AM

Originally posted by fwcetus

Perhaps the intermittency is just within the mount, and not at the interface between lens and body (?).

Perhaps, except that as I said, it works perfectly on the K20D. Maybe the K20D mount just compresses the pin more tightly, I dunno.

04-20-2009, 04:58 PM	#1
deadwolfbones Veteran Member Join Date: Sep 2007 Location: La Crescenta, CA Posts: 7,450	Super Program + Viv S1 70-210mm w/ A setting = no auto aperture Kind of an odd one... Other A-lenses work fine on the Super Program (have auto-aperture functions in Program mode), but the Vivitar Series 1 70-210mm v3 doesn't. However, the Viv S1 DOES work in program mode on the K20D. Any ideas as to what's going wrong? I'm pretty certain the Viv S1 once DID work on the Super Program, but it sure isn't now. Thanks!

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04-22-2009, 11:10 AM	#2
deadwolfbones Veteran Member Join Date: Sep 2007 Location: La Crescenta, CA Posts: 7,450 Original Poster	Nobody, eh?

04-22-2009, 11:54 AM	#3
ajuett Inactive Account Join Date: Jul 2008 Location: Vancouver, Canada Posts: 1,100	Version 3 of the Vivitar Series 1 70-210mm Note 2: Pentax-specific: The presence of the of the "A" setting, in addition to its high resolution, is what makes version 3 so desirable today, but Vivitar/Komine only added this feature part way through the production run so not all version 3 lenses have it: Be sure to check before buying. see details here: Vivitar 70-210 Series 1 Macro Zoom Lenses - Mark Roberts Photography -

04-22-2009, 12:19 PM	#4
Steinback Veteran Member Join Date: Jan 2008 Location: GTA, ON, Canada Photos: Gallery \| Albums Posts: 1,673	Maybe a slight difference in tolerances keeping the lens contacts from touching the Super Program body properly even though they are fine on the K20? I would start by making sure the contacts are clean and maybe seeing if wiggling the Vivitar around a bit when it is on the film body changes anything. I can't offer any specific fix, that isn't an issue I've run into before (my film bodies both have completely manual mounts).

04-22-2009, 04:03 PM	#5
deadwolfbones Veteran Member Join Date: Sep 2007 Location: La Crescenta, CA Posts: 7,450 Original Poster	Originally posted by ajuett Version 3 of the Vivitar Series 1 70-210mm Note 2: Pentax-specific: The presence of the of the "A" setting, in addition to its high resolution, is what makes version 3 so desirable today, but Vivitar/Komine only added this feature part way through the production run so not all version 3 lenses have it: Be sure to check before buying. see details here: Vivitar 70-210 Series 1 Macro Zoom Lenses - Mark Roberts Photography - Yes, that's the version I have. Originally posted by Steinback Maybe a slight difference in tolerances keeping the lens contacts from touching the Super Program body properly even though they are fine on the K20? I would start by making sure the contacts are clean and maybe seeing if wiggling the Vivitar around a bit when it is on the film body changes anything. I can't offer any specific fix, that isn't an issue I've run into before (my film bodies both have completely manual mounts). Yeah, I thought about that and I'll try it tonight. Just seems very, very strange to me. Must be something that simple.

04-22-2009, 05:00 PM	#6
ajuett Inactive Account Join Date: Jul 2008 Location: Vancouver, Canada Posts: 1,100	Originally posted by deadwolfbones Yes, that's the version I have. Does your Version 3 have the 'A' setting or not? As there seems to be 2 versions of Version 3 according to that site.

04-22-2009, 05:42 PM	#7
deadwolfbones Veteran Member Join Date: Sep 2007 Location: La Crescenta, CA Posts: 7,450 Original Poster	Originally posted by ajuett Does your Version 3 have the 'A' setting or not? As there seems to be 2 versions of Version 3 according to that site. Yes, it has the A-setting. Hence my use of "other A-lenses" in the first post, and noting the fact that it works in program mode on the K20D.

04-22-2009, 05:54 PM	#8
deadwolfbones Veteran Member Join Date: Sep 2007 Location: La Crescenta, CA Posts: 7,450 Original Poster	Welp, I just thoroughly cleaned the contacts, got no response. So I started pressing down on the lens against the mount and got intermittent program mode. The slightest movement would cause it to go into or out of program mode. So I guess, as Steinback suggested, the tolerances are just a tiny bit off. Anyone have any suggestions as to what to do about this? Can the pin be extended somehow?

04-23-2009, 05:44 AM	#9
fwcetus Site Supporter Join Date: Sep 2006 Location: New England Photos: Gallery \| Albums Posts: 1,286	Originally posted by deadwolfbones Welp, I just thoroughly cleaned the contacts, got no response. So I started pressing down on the lens against the mount and got intermittent program mode. The slightest movement would cause it to go into or out of program mode. Perhaps squirting a ~tiny~ bit of old-fashioned "TV tuner cleaner" (Radio Shack?) into the pin's socket (or, maybe even a drop of 90% isopropyl/"rubbing" alcohol), and then working the pin in/out/back/forth/etc., is worth a try. Perhaps the intermittency is just within the mount, and not at the interface between lens and body (?).

04-23-2009, 07:56 AM	#10
deadwolfbones Veteran Member Join Date: Sep 2007 Location: La Crescenta, CA Posts: 7,450 Original Poster	Originally posted by fwcetus Perhaps the intermittency is just within the mount, and not at the interface between lens and body (?). Perhaps, except that as I said, it works perfectly on the K20D. Maybe the K20D mount just compresses the pin more tightly, I dunno.