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**ismaelg** · 06-02-2017, 11:05 AM

Hello,

I just received a T2 to Pentax K adapter from eBay. Yes, one of those cheap ones ($5).
I tried it and it mounts to the T2 lens, but the mount doesn't fit any of my Pentax bodies. It looks to be the correct mount, but it doesn't turn. I sent a message to the seller in China with little hope so I want to ask here: Have anybody had this happened? Any hope to fix it? It seems to be a tolerance issue. Not sure if it's worth the effort of returning.
I'm testing in older non working bodies before trying a DSLR.

Thanks,
Ismael

Not a Number · 06-02-2017, 11:59 AM

I found you get what you pay for with T2 adapters. I pay a little more for ones that are marked "Japan" and haven't had any problems with them. Qualide is one brand name that I've had good luck with. Add Qualide or Japan to your eBay search.

**mattt** · 06-02-2017, 06:09 PM

I picked up a fotodiox T2-K for my Soligor 135/1.8 - flawless. I am very pleased

cyberjunkie · 06-04-2017, 11:53 AM

The exact same thing happened to me!
T2 mount for P-K which seems to be ok but can't be mounted.
It was in a bag with other cheap Chinese T2 mounts, purchased at different times, so I can't say if it was a faulty piece among other perfectly fine ones, or a single purchase from a chinese vendor who sells faulty T2 adapters.
I'm sorry, I can't say if there is a vendor who should better be avoided, or if it's just a matter of poor QC.
I'd be grateful to get the right answer, maybe someone else, less messy and with less lenses, can give that answer

Cheers

P

**ismaelg** · 06-04-2017, 07:46 PM

Hello,

Happy to report I fixed it! It was $4 so it was not worth returning it. So what the heck!
I came to the conclusion it was a tolerance issue. I carefully filed away the back of the mount tabs and it improved ever so slightly. More filing looked promising. So out came the Dremel and went havoc on it! It works now but since the tabs were filed down, I'll treat it gently. This will not see much use anyways. Mostly a novelty for an occasional T2 lens that may come my way....

Thanks,
Ismael

**goatsNdonkey** · 06-05-2017, 07:50 PM

I wish ebay would let me skip certain countries when searching for products. I've gotten two T2/K-mount adapters, neither from China. The first one, in a box labeled "Sonia" I think, had the opposite of yours. It mounted, but it was slightly wobbly when tightened. The second one, worked just fine. I think it was Japanese, but I don't recall if it had any brand identification.

cyberjunkie · 06-06-2017, 11:46 AM

I have the opposite opinion.
I'm glad to have the choice to buy cheap little accessories from Chinese vendors.
Especially for large format users, it means huge savings.
A simple retaining ring for a Compur/Copal/Prontor shutter could cost 15 times more if purchased from Linhof or Sinar, and they look and work exactly the same.
I've purchased dozens of accessories: lens caps, PK/M39/M42 back caps, hoods, step up/down rings, flanged M39/M42 to PK rings, T2 adapters, focusing adapters of various lenghts, etc, etc.
In such a huge number of accessories, just a single non working T2 adapter, plus a batch of infinity M42 to PK rings with too tight tolerances.
I haven't trashed them cause sooner or later they could come handy. If i have to, i'll try to improvise a fix with a file/dremel.
I guess the only way to be on the safe side is to try first one item, then order as many as you need once you make sure it works at it should. That is, if you need many. If you need just one piece, you can try another vendor if the first try was not successful. Still saving half of the money you'd spend with any other option.

One caveat specific to T2 adapters.
Chinese ones found on Ebay often are made with some kind of fiber, and the thread for the set screw is quite weak. The head of the screw is also easily damaged, especially if you want to transfer the same T2 from one lens to the other.
Unless you make sure the ring is made of aluminium, it could be preferable to buy a second hand one (made in Japan or Germany).

cheers

P

**goatsNdonkey** · 06-06-2017, 06:49 PM

There are some things I might want to buy from China, but when I know the thing I'm searching for is something I don't want to buy from there, it would be nice if I could subtract it from locations in my ebay search results. Of course, if I had that choice, I would also have the choice to not use it, as would other people.

**WPRESTO** · 06-06-2017, 07:11 PM

If you want a high quality T adapter, try Edmund Scientific, but they aren't cheap.

**goatsNdonkey** · 06-06-2017, 07:24 PM

Originally posted by WPRESTO

If you want a high quality T adapter, try Edmund Scientific, but they aren't cheap.

I keep forgetting that Edmund is still around. When I was a grade school kid, my older brother would get their catalog in the mail...early 1960s!

**WPRESTO** · 06-07-2017, 03:53 AM

Originally posted by goatsNdonkey

I keep forgetting that Edmund is still around. When I was a grade school kid, my older brother would get their catalog in the mail...early 1960s!

I used to get their ctatlog as well, and ordered some items from them although I cannot now remember precisely what. Since then they have spkit into Edmund Scientific and Edmund Optics. I think that the optics division is the one that has a diverse line of T-system tubes, adapters, etc.

**goatsNdonkey** · 06-07-2017, 05:11 AM

Originally posted by WPRESTO

I used to get their ctatlog as well, and ordered some items from them although I cannot now remember precisely what. Since then they have spkit into Edmund Scientific and Edmund Optics. I think that the optics division is the one that has a diverse line of T-system tubes, adapters, etc.

I suspect that a number of those Edmund Optics T-adapters and related parts are for connecting cameras to telescopes, microscopes, or other kinds of optical systems most photographers aren't using.

**WPRESTO** · 06-07-2017, 05:59 AM

Originally posted by goatsNdonkey

I suspect that a number of those Edmund Optics T-adapters and related parts are for connecting cameras to telescopes, microscopes, or other kinds of optical systems most photographers aren't using.

Not quite. They are sold mostly together with bench optics supplies = for laboratory set-ups. I use a T-adapter, a long T-tube and a T to RMS adapter all from Edmund to mount a microscope objective for first-step extreme macro (about 2X-4X range). At greater magnifications, I use a modified Wild microscope with a Pentax bellows atop. However, I also have a T thread to telescope adapter if I want to use the scope as a long telephoto (direct projection, eyepiece removed).

**goatsNdonkey** · 06-07-2017, 08:09 AM

Originally posted by WPRESTO

Not quite. They are sold mostly together with bench optics supplies = for laboratory set-ups. I use a T-adapter, a long T-tube and a T to RMS adapter all from Edmund to mount a microscope objective for first-step extreme macro (about 2X-4X range). At greater magnifications, I use a modified Wild microscope with a Pentax bellows atop. However, I also have a T thread to telescope adapter if I want to use the scope as a long telephoto (direct projection, eyepiece removed).

I have the Asahi Pentax microscope adapter, but it goes straight to m42, alas, no T-mount involved. I need to unpack my old microscope and try it out again!

06-02-2017, 11:05 AM	#1
ismaelg Loyal Site Supporter Join Date: Apr 2009 Location: Puerto Rico Photos: Gallery Posts: 2,684	T2 to Pentax K adapter Hello, I just received a T2 to Pentax K adapter from eBay. Yes, one of those cheap ones ($5). I tried it and it mounts to the T2 lens, but the mount doesn't fit any of my Pentax bodies. It looks to be the correct mount, but it doesn't turn. I sent a message to the seller in China with little hope so I want to ask here: Have anybody had this happened? Any hope to fix it? It seems to be a tolerance issue. Not sure if it's worth the effort of returning. I'm testing in older non working bodies before trying a DSLR. Thanks, Ismael

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06-02-2017, 11:59 AM	#2
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	I found you get what you pay for with T2 adapters. I pay a little more for ones that are marked "Japan" and haven't had any problems with them. Qualide is one brand name that I've had good luck with. Add Qualide or Japan to your eBay search.

06-02-2017, 06:09 PM	#3
mattt Site Supporter Join Date: Feb 2011 Location: Niagara Photos: Gallery \| Albums Posts: 3,907	I picked up a fotodiox T2-K for my Soligor 135/1.8 - flawless. I am very pleased

06-04-2017, 11:53 AM	#4
cyberjunkie Pentaxian Join Date: Mar 2010 Location: Chiang Mai, Bologna, Amsterdam Photos: Gallery Posts: 1,198	The exact same thing happened to me! T2 mount for P-K which seems to be ok but can't be mounted. It was in a bag with other cheap Chinese T2 mounts, purchased at different times, so I can't say if it was a faulty piece among other perfectly fine ones, or a single purchase from a chinese vendor who sells faulty T2 adapters. I'm sorry, I can't say if there is a vendor who should better be avoided, or if it's just a matter of poor QC. I'd be grateful to get the right answer, maybe someone else, less messy and with less lenses, can give that answer Cheers P

06-04-2017, 07:46 PM	#5
ismaelg Loyal Site Supporter Join Date: Apr 2009 Location: Puerto Rico Photos: Gallery Posts: 2,684 Original Poster	Hello, Happy to report I fixed it! It was $4 so it was not worth returning it. So what the heck! I came to the conclusion it was a tolerance issue. I carefully filed away the back of the mount tabs and it improved ever so slightly. More filing looked promising. So out came the Dremel and went havoc on it! It works now but since the tabs were filed down, I'll treat it gently. This will not see much use anyways. Mostly a novelty for an occasional T2 lens that may come my way.... Thanks, Ismael

06-05-2017, 07:50 PM	#6
goatsNdonkey Site Supporter Join Date: Jan 2016 Location: Fulton County, Illinois Posts: 3,736	I wish ebay would let me skip certain countries when searching for products. I've gotten two T2/K-mount adapters, neither from China. The first one, in a box labeled "Sonia" I think, had the opposite of yours. It mounted, but it was slightly wobbly when tightened. The second one, worked just fine. I think it was Japanese, but I don't recall if it had any brand identification.

06-06-2017, 11:46 AM	#7
cyberjunkie Pentaxian Join Date: Mar 2010 Location: Chiang Mai, Bologna, Amsterdam Photos: Gallery Posts: 1,198	I have the opposite opinion. I'm glad to have the choice to buy cheap little accessories from Chinese vendors. Especially for large format users, it means huge savings. A simple retaining ring for a Compur/Copal/Prontor shutter could cost 15 times more if purchased from Linhof or Sinar, and they look and work exactly the same. I've purchased dozens of accessories: lens caps, PK/M39/M42 back caps, hoods, step up/down rings, flanged M39/M42 to PK rings, T2 adapters, focusing adapters of various lenghts, etc, etc. In such a huge number of accessories, just a single non working T2 adapter, plus a batch of infinity M42 to PK rings with too tight tolerances. I haven't trashed them cause sooner or later they could come handy. If i have to, i'll try to improvise a fix with a file/dremel. I guess the only way to be on the safe side is to try first one item, then order as many as you need once you make sure it works at it should. That is, if you need many. If you need just one piece, you can try another vendor if the first try was not successful. Still saving half of the money you'd spend with any other option. One caveat specific to T2 adapters. Chinese ones found on Ebay often are made with some kind of fiber, and the thread for the set screw is quite weak. The head of the screw is also easily damaged, especially if you want to transfer the same T2 from one lens to the other. Unless you make sure the ring is made of aluminium, it could be preferable to buy a second hand one (made in Japan or Germany). cheers P

06-06-2017, 06:49 PM	#8
goatsNdonkey Site Supporter Join Date: Jan 2016 Location: Fulton County, Illinois Posts: 3,736	There are some things I might want to buy from China, but when I know the thing I'm searching for is something I don't want to buy from there, it would be nice if I could subtract it from locations in my ebay search results. Of course, if I had that choice, I would also have the choice to not use it, as would other people.

06-06-2017, 07:11 PM	#9
WPRESTO Loyal Site Supporter Join Date: Aug 2010 Location: Massachusetts Photos: Gallery \| Albums Posts: 59,138	If you want a high quality T adapter, try Edmund Scientific, but they aren't cheap.

06-06-2017, 07:24 PM	#10
goatsNdonkey Site Supporter Join Date: Jan 2016 Location: Fulton County, Illinois Posts: 3,736	Originally posted by WPRESTO If you want a high quality T adapter, try Edmund Scientific, but they aren't cheap. I keep forgetting that Edmund is still around. When I was a grade school kid, my older brother would get their catalog in the mail...early 1960s!

06-07-2017, 03:53 AM	#11
WPRESTO Loyal Site Supporter Join Date: Aug 2010 Location: Massachusetts Photos: Gallery \| Albums Posts: 59,138	Originally posted by goatsNdonkey I keep forgetting that Edmund is still around. When I was a grade school kid, my older brother would get their catalog in the mail...early 1960s! I used to get their ctatlog as well, and ordered some items from them although I cannot now remember precisely what. Since then they have spkit into Edmund Scientific and Edmund Optics. I think that the optics division is the one that has a diverse line of T-system tubes, adapters, etc.

06-07-2017, 05:11 AM	#12
goatsNdonkey Site Supporter Join Date: Jan 2016 Location: Fulton County, Illinois Posts: 3,736	Originally posted by WPRESTO I used to get their ctatlog as well, and ordered some items from them although I cannot now remember precisely what. Since then they have spkit into Edmund Scientific and Edmund Optics. I think that the optics division is the one that has a diverse line of T-system tubes, adapters, etc. I suspect that a number of those Edmund Optics T-adapters and related parts are for connecting cameras to telescopes, microscopes, or other kinds of optical systems most photographers aren't using.

06-07-2017, 05:59 AM	#13
WPRESTO Loyal Site Supporter Join Date: Aug 2010 Location: Massachusetts Photos: Gallery \| Albums Posts: 59,138	Originally posted by goatsNdonkey I suspect that a number of those Edmund Optics T-adapters and related parts are for connecting cameras to telescopes, microscopes, or other kinds of optical systems most photographers aren't using. Not quite. They are sold mostly together with bench optics supplies = for laboratory set-ups. I use a T-adapter, a long T-tube and a T to RMS adapter all from Edmund to mount a microscope objective for first-step extreme macro (about 2X-4X range). At greater magnifications, I use a modified Wild microscope with a Pentax bellows atop. However, I also have a T thread to telescope adapter if I want to use the scope as a long telephoto (direct projection, eyepiece removed).

06-07-2017, 08:09 AM	#14
goatsNdonkey Site Supporter Join Date: Jan 2016 Location: Fulton County, Illinois Posts: 3,736	Originally posted by WPRESTO Not quite. They are sold mostly together with bench optics supplies = for laboratory set-ups. I use a T-adapter, a long T-tube and a T to RMS adapter all from Edmund to mount a microscope objective for first-step extreme macro (about 2X-4X range). At greater magnifications, I use a modified Wild microscope with a Pentax bellows atop. However, I also have a T thread to telescope adapter if I want to use the scope as a long telephoto (direct projection, eyepiece removed). I have the Asahi Pentax microscope adapter, but it goes straight to m42, alas, no T-mount involved. I need to unpack my old microscope and try it out again!