C-mount and D-mount adapters are on ebay

devorama · 10-11-2011, 10:07 AM

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I'm suspecting that the Kipon Q to C mount adapter might be too thin. My Pentax 6mm F/1.2 lens can only focus if I unscrew it 1.5 turns. Also I noticed when shooting the moon with my K to C and C to Q mount adapters that the lens was focused a good deal shorter than infinity. So I suspect the Kipon Q to C adapter may be too thin, causing a loss of close focus.

knightzerox · 10-11-2011, 10:11 AM

Someone on DPReivew mentioned the same issue with their adapter. Suggestions were to use a washer, loctite glue, or some sort of spacer. I've ordered the same adapters and will try to find a working solutions. Worse case I make the Kippon adapter thicker by gluing some spacing washer or pieces of metal.

**StigVidar** · 10-11-2011, 10:55 AM

Originally posted by knightzerox

Someone on DPReivew mentioned the same issue with their adapter. Suggestions were to use a washer, loctite glue, or some sort of spacer. I've ordered the same adapters and will try to find a working solutions. Worse case I make the Kippon adapter thicker by gluing some spacing washer or pieces of metal.

I will have the Kipon adapter this week and I already have the Pentax 6mm f/1,2 lens. I will reply here when I have tested.

Does anyone know where these, Rayqual mount adapter , can be bought?

knightzerox · 10-12-2011, 07:30 AM

Originally posted by StigVidar

I will have the Kipon adapter this week and I already have the Pentax 6mm f/1,2 lens. I will reply here when I have tested.

Does anyone know where these, Rayqual mount adapter , can be bought?

Hi, you can find this adapter on B&H Photo or find the Kipon one at Adorama. Just search for "c to k adapter". They are around $30. I've ordered mine from B&H Photo.

Mock · 10-12-2011, 07:44 AM

None of the C-K mounts I've found have a tripod ring, this is why the Rayqual ones are desirable. I wait for Pentax or Rayqual to start selling their K-Q adapter.

snostorm · 10-12-2011, 08:19 AM

Originally posted by Mock

None of the C-K mounts I've found have a tripod ring, this is why the Rayqual ones are desirable. I wait for Pentax or Rayqual to start selling their K-Q adapter.

Hi Mock,

I've been getting anxious for a K>Q adapter as this is a major reason for me buying a Q, so last night I decided to try e-mailing Rayqual on the chance that they'd have someone who could translate, and they responded pretty quickly stating that they do not ship overseas, but linked to Japan Exposures saying that I could purchase one from them. I've e-mailed them early this morning with a price, shipping and handling, and procedures request, but have not received a response yet. I expect that they'll get back to me later today. Their policy is to sell at the actual cost plus a modest handling fee. The price listted on the Rayqual site is @ $287 USD, so we'll see what happens. . .

Scott

**StigVidar** · 10-12-2011, 08:33 AM

Originally posted by devorama

I'm suspecting that the Kipon Q to C mount adapter might be too thin. My Pentax 6mm F/1.2 lens can only focus if I unscrew it 1.5 turns. Also I noticed when shooting the moon with my K to C and C to Q mount adapters that the lens was focused a good deal shorter than infinity. So I suspect the Kipon Q to C adapter may be too thin, causing a loss of close focus.

Yes, you are right. This Kipon adapter is way too thin and useless.

**StigVidar** · 10-12-2011, 08:42 AM

Originally posted by knightzerox

Hi, you can find this adapter on B&H Photo or find the Kipon one at Adorama. Just search for "c to k adapter". They are around $30. I've ordered mine from B&H Photo.

Thanks, but I am not particularly interested in a c to k adapter. I want to use c-mount lenses on a Q. Anyway, I can't find anything from Rayqual in their shop.

snostorm · 10-12-2011, 09:03 AM

Hi StigVidar,

Rayqual shows C>Q adapters on their site:

http://www.rayqual.com/

They and D mount adapters are pictured under the K>Q and other DSLR mount >Q adapters. Apparently, they are being discounted, but are still pretty pricey.

Scott

knightzerox · 10-12-2011, 09:35 AM

Originally posted by snostorm

Hi Mock,

I've been getting anxious for a K>Q adapter as this is a major reason for me buying a Q, so last night I decided to try e-mailing Rayqual on the chance that they'd have someone who could translate, and they responded pretty quickly stating that they do not ship overseas, but linked to Japan Exposures saying that I could purchase one from them. I've e-mailed them early this morning with a price, shipping and handling, and procedures request, but have not received a response yet. I expect that they'll get back to me later today. Their policy is to sell at the actual cost plus a modest handling fee. The price listted on the Rayqual site is @ $287 USD, so we'll see what happens. . .

Scott

Ouch $287. I'm sure it's a quality product though. I paid $70 total for the adapter from q-c and from c-k combined. I'll give it a try and I'm pretty handy and modifying something if it needs to be adjusted. If Pentax releases their q-k adapter I'll probably end up buying it if it does AF.

snostorm · 10-12-2011, 09:56 AM

Originally posted by knightzerox

Ouch $287. I'm sure it's a quality product though. I paid $70 total for the adapter from q-c and from c-k combined. I'll give it a try and I'm pretty handy and modifying something if it needs to be adjusted. If Pentax releases their q-k adapter I'll probably end up buying it if it does AF.

Hi knightzerox,

I'd doubt that the Pentax adapter would allow AF, unless it had its own power supply. The Q's battery is pretty wimpy, and would be quickly drained by either type of K mount AF motor.

I'm expecting the main difference to be an aperture ring on the adapter on the Pentax model to allow use of DA lenses that don't have an aperture rings. The Rayqual doesn't have one, but that doesn't much matter to me as most of my lenses that I'd use with the Q have their own rings.

If Pentax did come out with an adapter that allowed AF with reasonable performance (probably would need a more advanced AF system in a future body), I'd buy one though. . .

Scott

**StigVidar** · 10-12-2011, 02:43 PM

Originally posted by devorama

I'm suspecting that the Kipon Q to C mount adapter might be too thin. My Pentax 6mm F/1.2 lens can only focus if I unscrew it 1.5 turns. Also I noticed when shooting the moon with my K to C and C to Q mount adapters that the lens was focused a good deal shorter than infinity. So I suspect the Kipon Q to C adapter may be too thin, causing a loss of close focus.

You could also buy C-mount 1mm spacer ring. Search for "c-mount ring" on ebay......

devorama · 10-12-2011, 04:51 PM

Originally posted by StigVidar

You could also buy C-mount 1mm spacer ring. Search for "c-mount ring" on ebay......

I couldn't find them on ebay, but I did find them here:

Edmund Optics

I estimate the lens scale is accurate when unscrewed 1.5 turns. The threads on c-mount are 32 threads/inch. So each thread is 1/32". So 1.5 threads is 0.047" which is 1.2mm. They have 1.0mm and 1.25 mm. I figure I'll buy both and test them out. Too thin and I'll lose close focus. Too thick and I'll lose infinity focus. I'll let everyone here know how it goes.

**StigVidar** · 10-13-2011, 03:34 AM

I also received a message that this one, http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=140609967644&ssPageName=ADME:X:RTQ:US:1123 is nearly 1mm thicker than the Kipon adapter and should therefore be without focus problems.

Zygonyx · 10-13-2011, 04:41 AM

Originally posted by StigVidar

Yes, you are right. This Kipon adapter is way too thin and useless.

I recieved mine and can confirm this statement...

...let's look at possible C-mount 1mm spacer ring

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10-11-2011, 10:07 AM	#31
devorama Veteran Member Join Date: Apr 2009 Location: Chicago, IL Photos: Gallery \| Albums Posts: 638 Original Poster	Staff note: This post may contain affiliate links, which means Pentax Forums may earn a small commission if a visitor clicks through and makes a purchase. If you would like to support the forum directly, you may also make a donation here. I'm suspecting that the Kipon Q to C mount adapter might be too thin. My Pentax 6mm F/1.2 lens can only focus if I unscrew it 1.5 turns. Also I noticed when shooting the moon with my K to C and C to Q mount adapters that the lens was focused a good deal shorter than infinity. So I suspect the Kipon Q to C adapter may be too thin, causing a loss of close focus.

10-11-2011, 10:11 AM	#32
knightzerox Senior Member Join Date: Oct 2011 Posts: 220	Someone on DPReivew mentioned the same issue with their adapter. Suggestions were to use a washer, loctite glue, or some sort of spacer. I've ordered the same adapters and will try to find a working solutions. Worse case I make the Kippon adapter thicker by gluing some spacing washer or pieces of metal.

10-11-2011, 10:55 AM	#33
StigVidar Site Supporter Join Date: Nov 2006 Location: Norway Photos: Gallery \| Albums Posts: 705	Originally posted by knightzerox Someone on DPReivew mentioned the same issue with their adapter. Suggestions were to use a washer, loctite glue, or some sort of spacer. I've ordered the same adapters and will try to find a working solutions. Worse case I make the Kippon adapter thicker by gluing some spacing washer or pieces of metal. I will have the Kipon adapter this week and I already have the Pentax 6mm f/1,2 lens. I will reply here when I have tested. Does anyone know where these, Rayqual mount adapter , can be bought?

10-12-2011, 07:30 AM	#34
knightzerox Senior Member Join Date: Oct 2011 Posts: 220	Originally posted by StigVidar I will have the Kipon adapter this week and I already have the Pentax 6mm f/1,2 lens. I will reply here when I have tested. Does anyone know where these, Rayqual mount adapter , can be bought? Hi, you can find this adapter on B&H Photo or find the Kipon one at Adorama. Just search for "c to k adapter". They are around $30. I've ordered mine from B&H Photo.

10-12-2011, 07:44 AM	#35
Mock Veteran Member Join Date: Feb 2009 Location: Edmonton Photos: Gallery \| Albums Posts: 314	None of the C-K mounts I've found have a tripod ring, this is why the Rayqual ones are desirable. I wait for Pentax or Rayqual to start selling their K-Q adapter.

10-12-2011, 08:19 AM	#36
snostorm Veteran Member Join Date: Oct 2006 Location: Chicago suburb, IL, USA Posts: 1,535	Originally posted by Mock None of the C-K mounts I've found have a tripod ring, this is why the Rayqual ones are desirable. I wait for Pentax or Rayqual to start selling their K-Q adapter. Hi Mock, I've been getting anxious for a K>Q adapter as this is a major reason for me buying a Q, so last night I decided to try e-mailing Rayqual on the chance that they'd have someone who could translate, and they responded pretty quickly stating that they do not ship overseas, but linked to Japan Exposures saying that I could purchase one from them. I've e-mailed them early this morning with a price, shipping and handling, and procedures request, but have not received a response yet. I expect that they'll get back to me later today. Their policy is to sell at the actual cost plus a modest handling fee. The price listted on the Rayqual site is @ $287 USD, so we'll see what happens. . . Scott

10-12-2011, 08:33 AM	#37
StigVidar Site Supporter Join Date: Nov 2006 Location: Norway Photos: Gallery \| Albums Posts: 705	Originally posted by devorama I'm suspecting that the Kipon Q to C mount adapter might be too thin. My Pentax 6mm F/1.2 lens can only focus if I unscrew it 1.5 turns. Also I noticed when shooting the moon with my K to C and C to Q mount adapters that the lens was focused a good deal shorter than infinity. So I suspect the Kipon Q to C adapter may be too thin, causing a loss of close focus. Yes, you are right. This Kipon adapter is way too thin and useless.

10-12-2011, 08:42 AM	#38
StigVidar Site Supporter Join Date: Nov 2006 Location: Norway Photos: Gallery \| Albums Posts: 705	Originally posted by knightzerox Hi, you can find this adapter on B&H Photo or find the Kipon one at Adorama. Just search for "c to k adapter". They are around $30. I've ordered mine from B&H Photo. Thanks, but I am not particularly interested in a c to k adapter. I want to use c-mount lenses on a Q. Anyway, I can't find anything from Rayqual in their shop.

10-12-2011, 09:03 AM	#39
snostorm Veteran Member Join Date: Oct 2006 Location: Chicago suburb, IL, USA Posts: 1,535	Hi StigVidar, Rayqual shows C>Q adapters on their site: http://www.rayqual.com/ They and D mount adapters are pictured under the K>Q and other DSLR mount >Q adapters. Apparently, they are being discounted, but are still pretty pricey. Scott

10-12-2011, 09:35 AM	#40
knightzerox Senior Member Join Date: Oct 2011 Posts: 220	Originally posted by snostorm Hi Mock, I've been getting anxious for a K>Q adapter as this is a major reason for me buying a Q, so last night I decided to try e-mailing Rayqual on the chance that they'd have someone who could translate, and they responded pretty quickly stating that they do not ship overseas, but linked to Japan Exposures saying that I could purchase one from them. I've e-mailed them early this morning with a price, shipping and handling, and procedures request, but have not received a response yet. I expect that they'll get back to me later today. Their policy is to sell at the actual cost plus a modest handling fee. The price listted on the Rayqual site is @ $287 USD, so we'll see what happens. . . Scott Ouch $287. I'm sure it's a quality product though. I paid $70 total for the adapter from q-c and from c-k combined. I'll give it a try and I'm pretty handy and modifying something if it needs to be adjusted. If Pentax releases their q-k adapter I'll probably end up buying it if it does AF.

10-12-2011, 09:56 AM	#41
snostorm Veteran Member Join Date: Oct 2006 Location: Chicago suburb, IL, USA Posts: 1,535	Originally posted by knightzerox Ouch $287. I'm sure it's a quality product though. I paid $70 total for the adapter from q-c and from c-k combined. I'll give it a try and I'm pretty handy and modifying something if it needs to be adjusted. If Pentax releases their q-k adapter I'll probably end up buying it if it does AF. Hi knightzerox, I'd doubt that the Pentax adapter would allow AF, unless it had its own power supply. The Q's battery is pretty wimpy, and would be quickly drained by either type of K mount AF motor. I'm expecting the main difference to be an aperture ring on the adapter on the Pentax model to allow use of DA lenses that don't have an aperture rings. The Rayqual doesn't have one, but that doesn't much matter to me as most of my lenses that I'd use with the Q have their own rings. If Pentax did come out with an adapter that allowed AF with reasonable performance (probably would need a more advanced AF system in a future body), I'd buy one though. . . Scott

10-12-2011, 02:43 PM	#42
StigVidar Site Supporter Join Date: Nov 2006 Location: Norway Photos: Gallery \| Albums Posts: 705	Originally posted by devorama I'm suspecting that the Kipon Q to C mount adapter might be too thin. My Pentax 6mm F/1.2 lens can only focus if I unscrew it 1.5 turns. Also I noticed when shooting the moon with my K to C and C to Q mount adapters that the lens was focused a good deal shorter than infinity. So I suspect the Kipon Q to C adapter may be too thin, causing a loss of close focus. You could also buy C-mount 1mm spacer ring. Search for "c-mount ring" on ebay......

10-12-2011, 04:51 PM	#43
devorama Veteran Member Join Date: Apr 2009 Location: Chicago, IL Photos: Gallery \| Albums Posts: 638 Original Poster	Originally posted by StigVidar You could also buy C-mount 1mm spacer ring. Search for "c-mount ring" on ebay...... I couldn't find them on ebay, but I did find them here: Edmund Optics I estimate the lens scale is accurate when unscrewed 1.5 turns. The threads on c-mount are 32 threads/inch. So each thread is 1/32". So 1.5 threads is 0.047" which is 1.2mm. They have 1.0mm and 1.25 mm. I figure I'll buy both and test them out. Too thin and I'll lose close focus. Too thick and I'll lose infinity focus. I'll let everyone here know how it goes.

10-13-2011, 03:34 AM	#44
StigVidar Site Supporter Join Date: Nov 2006 Location: Norway Photos: Gallery \| Albums Posts: 705	I also received a message that this one, http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=140609967644&ssPageName=ADME:X:RTQ:US:1123 is nearly 1mm thicker than the Kipon adapter and should therefore be without focus problems.

10-13-2011, 04:41 AM	#45
Zygonyx Pentaxian Join Date: Jun 2011 Location: Ile de France Posts: 4,033	Originally posted by StigVidar Yes, you are right. This Kipon adapter is way too thin and useless. I recieved mine and can confirm this statement... ...let's look at possible C-mount 1mm spacer ring