M42 Do I need one

Richard Bradley · 07-25-2016, 04:08 PM

Hi everyone
I have a Pentax K 200 d I'm looking to buy a Vivitar Series 1 28-90mm f/2.8-3.5 MF Lens For PENTAX/RICOH
on E-bay do i need an adapter to connect them ?

Thank You
Richard

MarkJerling · 07-25-2016, 04:22 PM

Hi Richard.

Yes, you will need an adapter, if that's an M42 lens.There are two types - one sits flush and gives infinity focus, the other has a flange and does not allow infinity focus. The flush one can be problematic to remove, as the little screw and spring clip can catch on the cheap e-bay ones. The genuine Pentax ones don't seem to present this problem. I use the cheap adapters myself - and remove the spring and screw before use.

Are you sure it's not K-mount though? Vivitar Series 1 lenses were available in K-mount. If, of course, it is K-mount, then you will not need an adapter.

Kind regards,
Mark

drogheda99 · 07-25-2016, 05:08 PM

Originally posted by MarkJerling

Hi Richard.

Yes, you will need an adapter, if that's an M42 lens.There are two types - one sits flush and gives infinity focus, the other has a flange and does not allow infinity focus. The flush one can be problematic to remove, as the little screw and spring clip can catch on the cheap e-bay ones. The genuine Pentax ones don't seem to present this problem. I use the cheap adapters myself - and remove the spring and screw before use.

Are you sure it's not K-mount though? Vivitar Series 1 lenses were available in K-mount. If, of course, it is K-mount, then you will not need an adapter.

Kind regards,
Mark

Thanks
I believe it is a K mount.
Richard

MarkJerling · 07-25-2016, 05:18 PM

Originally posted by drogheda99

Thanks
I believe it is a K mount.
Richard

That's all good then. No adapter needed.

swanlefitte · 07-25-2016, 06:27 PM

If theres a picture of the mount its easy to tell. M42 are simple screw just like a jar.

Na Horuk · 07-26-2016, 03:44 PM

Maybe you have a picture of the lens mount, or you can look at it in person? If it is just a metal screw, then it is m42 and needs adapter. If it is a K-mount bayonet, then you will not need adapter. The K-mount bayonet should look very similar to the K-mount of your other lenses that work on K200D.

Is this the lens? Vivitar Series 1 (Komine) 28-90mm F2.8-3.5 Lens Reviews - Vivitar Lenses - Pentax Lens Review Database
Apparently this lens comes in different mounts, so make sure the specific one you are buying is K-mount. If it is m42, you need adapter. Again, I suggest you look at it.

**goatsNdonkey** · 07-27-2016, 08:07 AM

If the lens ad correctly describes it as a "Pentax/Ricoh" mount and it is a K-mount (Ricoh earlier used the M42 mount, too), it could be the version of the K-mount that includes the "Ricoh pin." If so, and depending on the shape of the end of the pin, it might catch in the AF screwdrive hole on a Pentax dslr lens mount. It is easy to remove the pin (which has no purpose if not connected to certain Ricoh film slrs), and a simple search here at the forum will lead to instructions on how to do it. I have a Vivitar Series 1 zoom that a version of the Ricoh pin that did NOT catch in my dslr mount, but I removed it anyway. I think KR indicates the Ricoh version of the K-mount and PK indicates the straight Pentax version, but I'm not sure that is true in all cases.

Na Horuk · 07-27-2016, 10:14 AM

If you want, you can post a photo of the lens mount here and we will identify it for you

07-25-2016, 04:08 PM	#1
Richard Bradley Guest	M42 Do I need one Hi everyone I have a Pentax K 200 d I'm looking to buy a Vivitar Series 1 28-90mm f/2.8-3.5 MF Lens For PENTAX/RICOH on E-bay do i need an adapter to connect them ? Thank You Richard

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Do I really need to get a genuine Pentax M42 > K-Mount adaptor?	watchingskyfallatm	Pentax SLR Lens Discussion	23	11-12-2014 03:53 PM
Photography Qualification, do I need one to further my career?	MarisaG	Photographic Industry and Professionals	11	01-23-2014 07:46 AM
Want one... but do I need one?	V.rider	Pentax SLR Lens Discussion	27	01-15-2014 06:25 PM
UV filters, do I really need one?	TopherTheME	Troubleshooting and Beginner Help	22	10-23-2011 10:08 PM
Beginner: Do I need another lens? Which one?	sewebster	Pentax SLR Lens Discussion	33	07-08-2008 03:09 PM

07-25-2016, 04:22 PM	#2
MarkJerling Moderator Site Supporter Join Date: May 2012 Location: Wairarapa, New Zealand Photos: Gallery \| Albums Posts: 20,422	Hi Richard. Yes, you will need an adapter, if that's an M42 lens.There are two types - one sits flush and gives infinity focus, the other has a flange and does not allow infinity focus. The flush one can be problematic to remove, as the little screw and spring clip can catch on the cheap e-bay ones. The genuine Pentax ones don't seem to present this problem. I use the cheap adapters myself - and remove the spring and screw before use. Are you sure it's not K-mount though? Vivitar Series 1 lenses were available in K-mount. If, of course, it is K-mount, then you will not need an adapter. Kind regards, Mark

07-25-2016, 05:08 PM	#3
drogheda99 New Member Join Date: Jul 2009 Location: Greenfield Park, Quebec, Canada Posts: 19	Originally posted by MarkJerling Hi Richard. Yes, you will need an adapter, if that's an M42 lens.There are two types - one sits flush and gives infinity focus, the other has a flange and does not allow infinity focus. The flush one can be problematic to remove, as the little screw and spring clip can catch on the cheap e-bay ones. The genuine Pentax ones don't seem to present this problem. I use the cheap adapters myself - and remove the spring and screw before use. Are you sure it's not K-mount though? Vivitar Series 1 lenses were available in K-mount. If, of course, it is K-mount, then you will not need an adapter. Kind regards, Mark Thanks I believe it is a K mount. Richard

07-25-2016, 05:18 PM	#4
MarkJerling Moderator Site Supporter Join Date: May 2012 Location: Wairarapa, New Zealand Photos: Gallery \| Albums Posts: 20,422	Originally posted by drogheda99 Thanks I believe it is a K mount. Richard That's all good then. No adapter needed.

07-25-2016, 06:27 PM	#5
swanlefitte Pentaxian Join Date: May 2015 Location: Minneapolis Photos: Gallery Posts: 4,068	If theres a picture of the mount its easy to tell. M42 are simple screw just like a jar.

07-26-2016, 03:44 PM	#6
Na Horuk Veteran Member Join Date: Feb 2012 Location: Slovenia, probably Photos: Gallery \| Albums Posts: 11,186	Maybe you have a picture of the lens mount, or you can look at it in person? If it is just a metal screw, then it is m42 and needs adapter. If it is a K-mount bayonet, then you will not need adapter. The K-mount bayonet should look very similar to the K-mount of your other lenses that work on K200D. Is this the lens? Vivitar Series 1 (Komine) 28-90mm F2.8-3.5 Lens Reviews - Vivitar Lenses - Pentax Lens Review Database Apparently this lens comes in different mounts, so make sure the specific one you are buying is K-mount. If it is m42, you need adapter. Again, I suggest you look at it.

07-27-2016, 08:07 AM	#7
goatsNdonkey Site Supporter Join Date: Jan 2016 Location: Fulton County, Illinois Posts: 3,736	If the lens ad correctly describes it as a "Pentax/Ricoh" mount and it is a K-mount (Ricoh earlier used the M42 mount, too), it could be the version of the K-mount that includes the "Ricoh pin." If so, and depending on the shape of the end of the pin, it might catch in the AF screwdrive hole on a Pentax dslr lens mount. It is easy to remove the pin (which has no purpose if not connected to certain Ricoh film slrs), and a simple search here at the forum will lead to instructions on how to do it. I have a Vivitar Series 1 zoom that a version of the Ricoh pin that did NOT catch in my dslr mount, but I removed it anyway. I think KR indicates the Ricoh version of the K-mount and PK indicates the straight Pentax version, but I'm not sure that is true in all cases.

07-27-2016, 10:14 AM	#8
Na Horuk Veteran Member Join Date: Feb 2012 Location: Slovenia, probably Photos: Gallery \| Albums Posts: 11,186	If you want, you can post a photo of the lens mount here and we will identify it for you