Identifying the mount

Kiparisas · 09-09-2020, 03:41 AM

Hello everybody

I have just received a Makinon 500 f8. The seller told me it's with a PK mount, so it should fit my K-3ii. However, I couldn't mount it and when compared to my other lenses, it's indeed different. I guess the seller made a mistake. Could you help me identify what is the real mount of this lens please?

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**pepperberry farm** · 09-09-2020, 03:59 AM - **2 Likes**

with the 'NI' printed on the mount, my first guess would be a Nikon F-mount, which is similar to the K-mount bayonet...

Kiparisas · 09-09-2020, 06:10 AM

Originally posted by pepperberry farm

with the 'NI' printed on the mount, my first guess would be a Nikon F-mount, which is similar to the K-mount bayonet...

Could you please clarify a bit what you mean by similar? Are they exactly the same? Encouraged by this post, I tried again and actually found a way to mount this lens on my K-3ii. It seems to be working, but I would like to be sure that by using this (as you say, Nikon F) lens I would not damage my camera body.

**pepperberry farm** · 09-09-2020, 06:13 AM - **1 Like**

an F-mount lens will fit, but will not turn all the way on the bayonet, maybe a quarter of the expected amount and will not lock on...

bassek · 09-09-2020, 06:26 AM - **1 Like**

Maybe 3D-print a plastic PK-flange would do as a fix? Unless it was cheap, return it. There are many alternatives for a 500mm mirror lens...

Seb

Kiparisas · 09-09-2020, 06:46 AM

Originally posted by bassek

Maybe 3D-print a plastic PK-flange would do as a fix? Unless it was cheap, return it. There are many alternatives for a 500mm mirror lens...

Seb

Thank you for your contribution. Maybe it could do as a fix, but I did not found such adapter. Maybe it doesn't exist? From what I found out, that is not such an easy task, something to do with the registration distance: Why is there no Nikon-F to K adapter without corrective glass? - PentaxForums.com . I think I paid 55 euros, but I don't see any alternatives for such price at the moment. In any case, if there's a chance I would harm my camera body, I would not like to take the risk with this lens. It's also not very light-weighted, so if it doesn't lock and doesn't turn all the way, maybe this could create potential problems? Though from the first glance, after being mounted, it seems to be working quite fine.

Not a Number · 09-09-2020, 07:04 AM - **1 Like**

To do it "properly" without a corrective lens adapter you should use something like an Adaptist multi-mount. This uses a soft shim to adjust the mount register differences. However since this is a mirror lens there is probably enough "throw" on the focus movement to compensate. Being a fixed aperture lens there are no aperture levers to worry about.

Pentax K+ Multi Mount - Adaptist
Pentax K+ Multi Mount (WR version) - Adaptist

I suppose you could take a K-mount off a cheap teleconverter or extension tubes, adjust for the register difference and replace the mount..

Discussion on the Adaptist mount:
https://www.pentaxforums.com/forums/22-pentax-camera-field-accessories/41035...ion-usage.html

Last edited by Not a Number; 09-09-2020 at 07:11 AM. Reason: Added link

bassek · 09-09-2020, 07:06 AM - **1 Like**

Originally posted by Kiparisas

Thank you for your contribution. Maybe it could do as a fix, but I did not found such adapter. Maybe it doesn't exist? From what I found out, that is not such an easy task, something to do with the registration distance:

No, it does not exist, you would have to unscrew the old Ni-flange, measure it and make a new PK-one 1.4mm shorter. Quite an engineering task.

Seb

**UncleVanya** · 09-09-2020, 07:59 AM

Originally posted by bassek

No, it does not exist, you would have to unscrew the old Ni-flange, measure it and make a new PK-one 1.4mm shorter. Quite an engineering task.

You have it backwards. Nikon registration distances are longer than Pentax so if you only swap the mounts you want to ADD length to the mount if you want infinity focus to line up with the lens marker for infinity. If you only swap mounts without adding any distance the lens will focus at infinity and beyond infinity... And the minimum focus distance will be slightly longer than expected.

You can see this by mounting a Nikon lens directly (with the caveats mentioned earlier - the lens will be only partly turned and not locked. ).

**jatrax** · 09-09-2020, 08:43 AM - **1 Like**

Lots of time and expense to make a lens work that was sold fraudulently. Return it for a refund and find one that works.

**UncleVanya** · 09-09-2020, 10:06 AM

Originally posted by jatrax

Lots of time and expense to make a lens work that was sold fraudulently. Return it for a refund and find one that works.

A minor quibble. I don't know that we can assume there original seller fraudulently sold this as this assumes they knew better. I'd expect they were could easily have just been mistaken.

Kiparisas · 09-09-2020, 10:42 AM - **1 Like**

Originally posted by UncleVanya

A minor quibble. I don't know that we can assume there original seller fraudulently sold this as this assumes they knew better. I'd expect they were could easily have just been mistaken.

Yes, I agree and believe it's just an honest mistake too. Though it doesn't change the fact that the lens is not a good fit.

Not a Number · 09-09-2020, 10:58 AM

Probably a simple mistake. Without aperture levers it is even easier to confuse the two mounts.

Unless you got the lens for next to nothing I would return it for refund. And look for something with a K-mount. In my opinion not worth the time, effort and expense to adapt the mount. I doubt the lens will be a stellar performer - few mirror lens are.

reh321 · 09-09-2020, 11:04 AM

Originally posted by Kiparisas

Thank you for your contribution. Maybe it could do as a fix, but I did not found such adapter. Maybe it doesn't exist? From what I found out, that is not such an easy task, something to do with the registration distance: Why is there no Nikon-F to K adapter without corrective glass? - PentaxForums.com . I think I paid 55 euros, but I don't see any alternatives for such price at the moment. In any case, if there's a chance I would harm my camera body, I would not like to take the risk with this lens. It's also not very light-weighted, so if it doesn't lock and doesn't turn all the way, maybe this could create potential problems? Though from the first glance, after being mounted, it seems to be working quite fine.

From my searching of the Internet, the 500mm f/8 Makinon lens was made using Minolta's mount {end of article}
Makinon | Legacy Lens

**jatrax** · 09-09-2020, 11:13 AM

Originally posted by UncleVanya

I don't know that we can assume there original seller fraudulently

Fair enough, my use of fraudulent was incorrect. "In Error" might be a better way to phrase. And that is what I meant, that the listing was incorrect not necessarily criminal or deceitful in nature. Many people selling camera gear have no idea what it is they actually have. However, that doesn't change my opinion that fixing the sellers mistake by buying an adapter or otherwise spending more money is not the way to proceed. The lens was sold as something it is not. How that happened is immaterial at this point. Ask the seller for a return and full refund. Don't throw good money after bad. Just my opinion.

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09-09-2020, 03:59 AM - 2 Likes	#2
pepperberry farm amateur dirt farmer Join Date: Dec 2014 Location: probably out in a field somewhere... Photos: Gallery \| Albums Posts: 41,660	with the 'NI' printed on the mount, my first guess would be a Nikon F-mount, which is similar to the K-mount bayonet...

09-09-2020, 06:10 AM	#3
Kiparisas Forum Member Join Date: Aug 2020 Posts: 57 Original Poster	Originally posted by pepperberry farm with the 'NI' printed on the mount, my first guess would be a Nikon F-mount, which is similar to the K-mount bayonet... Could you please clarify a bit what you mean by similar? Are they exactly the same? Encouraged by this post, I tried again and actually found a way to mount this lens on my K-3ii. It seems to be working, but I would like to be sure that by using this (as you say, Nikon F) lens I would not damage my camera body.

09-09-2020, 06:13 AM - 1 Like	#4
pepperberry farm amateur dirt farmer Join Date: Dec 2014 Location: probably out in a field somewhere... Photos: Gallery \| Albums Posts: 41,660	an F-mount lens will fit, but will not turn all the way on the bayonet, maybe a quarter of the expected amount and will not lock on...

09-09-2020, 06:26 AM - 1 Like	#5
bassek Pentaxian Join Date: Feb 2011 Photos: Gallery Posts: 706	Maybe 3D-print a plastic PK-flange would do as a fix? Unless it was cheap, return it. There are many alternatives for a 500mm mirror lens... Seb

09-09-2020, 06:46 AM	#6
Kiparisas Forum Member Join Date: Aug 2020 Posts: 57 Original Poster	Originally posted by bassek Maybe 3D-print a plastic PK-flange would do as a fix? Unless it was cheap, return it. There are many alternatives for a 500mm mirror lens... Seb Thank you for your contribution. Maybe it could do as a fix, but I did not found such adapter. Maybe it doesn't exist? From what I found out, that is not such an easy task, something to do with the registration distance: Why is there no Nikon-F to K adapter without corrective glass? - PentaxForums.com . I think I paid 55 euros, but I don't see any alternatives for such price at the moment. In any case, if there's a chance I would harm my camera body, I would not like to take the risk with this lens. It's also not very light-weighted, so if it doesn't lock and doesn't turn all the way, maybe this could create potential problems? Though from the first glance, after being mounted, it seems to be working quite fine.

09-09-2020, 07:04 AM - 1 Like	#7
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	To do it "properly" without a corrective lens adapter you should use something like an Adaptist multi-mount. This uses a soft shim to adjust the mount register differences. However since this is a mirror lens there is probably enough "throw" on the focus movement to compensate. Being a fixed aperture lens there are no aperture levers to worry about. Pentax K+ Multi Mount - Adaptist Pentax K+ Multi Mount (WR version) - Adaptist I suppose you could take a K-mount off a cheap teleconverter or extension tubes, adjust for the register difference and replace the mount.. Discussion on the Adaptist mount: https://www.pentaxforums.com/forums/22-pentax-camera-field-accessories/41035...ion-usage.html Last edited by Not a Number; 09-09-2020 at 07:11 AM. Reason: Added link

09-09-2020, 07:06 AM - 1 Like	#8
bassek Pentaxian Join Date: Feb 2011 Photos: Gallery Posts: 706	Originally posted by Kiparisas Thank you for your contribution. Maybe it could do as a fix, but I did not found such adapter. Maybe it doesn't exist? From what I found out, that is not such an easy task, something to do with the registration distance: No, it does not exist, you would have to unscrew the old Ni-flange, measure it and make a new PK-one 1.4mm shorter. Quite an engineering task. Seb

09-09-2020, 07:59 AM	#9
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,400	Originally posted by bassek No, it does not exist, you would have to unscrew the old Ni-flange, measure it and make a new PK-one 1.4mm shorter. Quite an engineering task. You have it backwards. Nikon registration distances are longer than Pentax so if you only swap the mounts you want to ADD length to the mount if you want infinity focus to line up with the lens marker for infinity. If you only swap mounts without adding any distance the lens will focus at infinity and beyond infinity... And the minimum focus distance will be slightly longer than expected. You can see this by mounting a Nikon lens directly (with the caveats mentioned earlier - the lens will be only partly turned and not locked. ).

09-09-2020, 08:43 AM - 1 Like	#10
jatrax Site Supporter Join Date: May 2010 Location: Washington Cascades Photos: Gallery \| Albums Posts: 12,991	Lots of time and expense to make a lens work that was sold fraudulently. Return it for a refund and find one that works.

09-09-2020, 10:06 AM	#11
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,400	Originally posted by jatrax Lots of time and expense to make a lens work that was sold fraudulently. Return it for a refund and find one that works. A minor quibble. I don't know that we can assume there original seller fraudulently sold this as this assumes they knew better. I'd expect they were could easily have just been mistaken.

09-09-2020, 10:42 AM - 1 Like	#12
Kiparisas Forum Member Join Date: Aug 2020 Posts: 57 Original Poster	Originally posted by UncleVanya A minor quibble. I don't know that we can assume there original seller fraudulently sold this as this assumes they knew better. I'd expect they were could easily have just been mistaken. Yes, I agree and believe it's just an honest mistake too. Though it doesn't change the fact that the lens is not a good fit.

09-09-2020, 10:58 AM	#13
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	Probably a simple mistake. Without aperture levers it is even easier to confuse the two mounts. Unless you got the lens for next to nothing I would return it for refund. And look for something with a K-mount. In my opinion not worth the time, effort and expense to adapt the mount. I doubt the lens will be a stellar performer - few mirror lens are.

09-09-2020, 11:04 AM	#14
reh321 Pentaxian Join Date: Nov 2014 Location: South Bend, IN, USA Photos: Gallery \| Albums Posts: 23,177	Originally posted by Kiparisas Thank you for your contribution. Maybe it could do as a fix, but I did not found such adapter. Maybe it doesn't exist? From what I found out, that is not such an easy task, something to do with the registration distance: Why is there no Nikon-F to K adapter without corrective glass? - PentaxForums.com . I think I paid 55 euros, but I don't see any alternatives for such price at the moment. In any case, if there's a chance I would harm my camera body, I would not like to take the risk with this lens. It's also not very light-weighted, so if it doesn't lock and doesn't turn all the way, maybe this could create potential problems? Though from the first glance, after being mounted, it seems to be working quite fine. From my searching of the Internet, the 500mm f/8 Makinon lens was made using Minolta's mount {end of article} Makinon \| Legacy Lens

09-09-2020, 11:13 AM	#15
jatrax Site Supporter Join Date: May 2010 Location: Washington Cascades Photos: Gallery \| Albums Posts: 12,991	Originally posted by UncleVanya I don't know that we can assume there original seller fraudulently Fair enough, my use of fraudulent was incorrect. "In Error" might be a better way to phrase. And that is what I meant, that the listing was incorrect not necessarily criminal or deceitful in nature. Many people selling camera gear have no idea what it is they actually have. However, that doesn't change my opinion that fixing the sellers mistake by buying an adapter or otherwise spending more money is not the way to proceed. The lens was sold as something it is not. How that happened is immaterial at this point. Ask the seller for a return and full refund. Don't throw good money after bad. Just my opinion.

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