Opinion on other brand lenses

paoestrellado · 01-25-2019, 01:01 PM

Hi! I have a Pentax K-S2 and trying to fit another brand lens(canon) on my pentax, what are the pros and cons of putting another lens using an adapter? I choose canon lens before it is cheaper here in our country (Ph). Advance thank you for your reponse.

**pepperberry farm** · 01-25-2019, 01:31 PM

the usual rule is if the adapter requires any glass in it to make it work, it will likely degrade your images...

**UncleVanya** · 01-25-2019, 01:42 PM

Older Nikon lenses (non-AI) can be mounted to the Pentax - they won't lock and the infinity mark will be off (it will focus past infinity) but you could play with some manual focus Nikon vintage gear that way. If you like the results there are ways to change the mount to be more permanent and lock.

Canon - as indicated above will only work with an adapter that has glass - that acts as a teleconverter and so everything is much narrower. Additionally these glass adapters are typically too cheap to be any good.

Honestly as cheaply as bodies can be had - I would buy an older Canon for those lenses. Unless you are talking about FD/FL lenses in which case you can't get them to work on modern Canon's.

reh321 · 01-25-2019, 01:50 PM

Originally posted by paoestrellado

Hi! I have a Pentax K-S2 and trying to fit another brand lens(canon) on my pentax, what are the pros and cons of putting another lens using an adapter? I choose canon lens before it is cheaper here in our country (Ph). Advance thank you for your reponse.

The biggest benefit of less-expensive Canon lenses is their electronic aperture control and their in-lens AF motors. Use one with an adapter, and you lose all of that. Selling this lens and purchasing a K-mount lens, and purchasing a Canon Rebel {basically equivalent to your K-S2} are your best two options.

**boriscleto** · 01-25-2019, 01:53 PM

In addition to having a shorter focal flange than K-mount, EF mount has an electromagnetic aperture. There are no adapters for K-mount. Sigma makes an EF mount adapter for Sony E mount,

Docrwm · 01-25-2019, 02:27 PM

Welcome aboard. Inexpensive legacy lenses is a hallmark of the Pentax K mount. There are plenty of lenses out there that are native to the K mount.

**Ash** · 01-25-2019, 03:12 PM

Welcome here. I would agree that it is better for image quality and compatibility that you stick to the lenses that have the native mount of your camera. Canon lenses on Canon and K-mount lenses on Pentax.

**twilhelm** · 01-25-2019, 03:41 PM - **1 Like**

If you want to use "other brand" lenses on your Pentax, I would recommend buying the M42 adapter and looking for M42 lenses. You'll find them in every country in the world and some can be had very cheap.

paoestrellado · 01-26-2019, 12:09 AM

there are limited pentax users here in our country that's what i'm looking for other lenses.

Adam · 01-26-2019, 12:24 AM

Originally posted by paoestrellado

there are limited pentax users here in our country that's what i'm looking for other lenses.

For everyday shooting, adapting a modern Canon lens to a Pentax DSLR is not something that will benefit you. It would be better to just use a Canon body in that case, since the adapter will cost you automation and image quality.

That said, there are plenty of third-party lenses in the K-mount which might be easier to source if there are no Pentax dealers in your area:
Third Party Lenses | PentaxForums.com

Not to mention the tons of legacy K-mount lenses, and M42 lenses, made by Pentax and others, which are a great value and are easy to find online. Our lens databases are a great resource for finding lenses.

Sandy Hancock · 01-26-2019, 02:46 AM

I can only echo everyone else's advice. Get some K-mount lenses, or a Canon body.

paoestrellado · 01-26-2019, 02:49 AM

Originally posted by Adam

For everyday shooting, adapting a modern Canon lens to a Pentax DSLR is not something that will benefit you. It would be better to just use a Canon body in that case, since the adapter will cost you automation and image quality.

That said, there are plenty of third-party lenses in the K-mount which might be easier to source if there are no Pentax dealers in your area:
Third Party Lenses | PentaxForums.com

Not to mention the tons of legacy K-mount lenses, and M42 lenses, made by Pentax and others, which are a great value and are easy to find online. Our lens databases are a great resource for finding lenses.

it's okay to fit a m42 lens on a s-2 ?

Sandy Hancock · 01-26-2019, 04:29 AM - **1 Like**

Originally posted by paoestrellado

it's okay to fit a m42 lens on a s-2 ?

Absolutely. All Pentax bodies work with M42 lenses.
You'll need an adaptor. It's worth paying a few extra dollars for the Pentax version.

rawr · 01-26-2019, 04:51 AM - **1 Like**

Originally posted by paoestrellado

there are limited pentax users here in our country

Since you are from PH, and Pentax cameras are made in the Philippines (and have been for a few decades), I am surprised to hear that there are only a limited number of Pentax users there. I always thought it likely that there would be more Pentax users there than other places.

paoestrellado · 01-27-2019, 08:04 AM

Originally posted by Sandy Hancock

Absolutely. All Pentax bodies work with M42 lenses.
You'll need an adaptor. It's worth paying a few extra dollars for the Pentax version.

Thank you! will check on that.

---------- Post added 01-27-19 at 08:07 AM ----------

Originally posted by rawr

Since you are from PH, and Pentax cameras are made in the Philippines (and have been for a few decades), I am surprised to hear that there are only a limited number of Pentax users there. I always thought it likely that there would be more Pentax users there than other places.

Oh don't be, we have a facebook group for us ph users of pentax and we are only a less of a thousand there, and some of them are not that active. canon, fuji, nikon, and sony are the most used brands here.

01-25-2019, 01:01 PM	#1
paoestrellado New Member Join Date: Sep 2018 Posts: 5	Opinion on other brand lenses Hi! I have a Pentax K-S2 and trying to fit another brand lens(canon) on my pentax, what are the pros and cons of putting another lens using an adapter? I choose canon lens before it is cheaper here in our country (Ph). Advance thank you for your reponse.

01-26-2019, 12:24 AM	#10
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,595	Originally posted by paoestrellado there are limited pentax users here in our country that's what i'm looking for other lenses. For everyday shooting, adapting a modern Canon lens to a Pentax DSLR is not something that will benefit you. It would be better to just use a Canon body in that case, since the adapter will cost you automation and image quality. That said, there are plenty of third-party lenses in the K-mount which might be easier to source if there are no Pentax dealers in your area: Third Party Lenses \| PentaxForums.com Not to mention the tons of legacy K-mount lenses, and M42 lenses, made by Pentax and others, which are a great value and are easy to find online. Our lens databases are a great resource for finding lenses. Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

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01-25-2019, 01:31 PM	#2
pepperberry farm amateur dirt farmer Join Date: Dec 2014 Location: probably out in a field somewhere... Photos: Gallery \| Albums Posts: 41,679	the usual rule is if the adapter requires any glass in it to make it work, it will likely degrade your images...

01-25-2019, 01:42 PM	#3
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,406	Older Nikon lenses (non-AI) can be mounted to the Pentax - they won't lock and the infinity mark will be off (it will focus past infinity) but you could play with some manual focus Nikon vintage gear that way. If you like the results there are ways to change the mount to be more permanent and lock. Canon - as indicated above will only work with an adapter that has glass - that acts as a teleconverter and so everything is much narrower. Additionally these glass adapters are typically too cheap to be any good. Honestly as cheaply as bodies can be had - I would buy an older Canon for those lenses. Unless you are talking about FD/FL lenses in which case you can't get them to work on modern Canon's.

01-25-2019, 01:50 PM	#4
reh321 Pentaxian Join Date: Nov 2014 Location: South Bend, IN, USA Photos: Gallery \| Albums Posts: 23,180	Originally posted by paoestrellado Hi! I have a Pentax K-S2 and trying to fit another brand lens(canon) on my pentax, what are the pros and cons of putting another lens using an adapter? I choose canon lens before it is cheaper here in our country (Ph). Advance thank you for your reponse. The biggest benefit of less-expensive Canon lenses is their electronic aperture control and their in-lens AF motors. Use one with an adapter, and you lose all of that. Selling this lens and purchasing a K-mount lens, and purchasing a Canon Rebel {basically equivalent to your K-S2} are your best two options.

01-25-2019, 01:53 PM	#5
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,475	In addition to having a shorter focal flange than K-mount, EF mount has an electromagnetic aperture. There are no adapters for K-mount. Sigma makes an EF mount adapter for Sony E mount,

01-25-2019, 02:27 PM	#6
Docrwm Veteran Member Join Date: Sep 2010 Location: Somewhere in the Southern US Photos: Gallery \| Albums Posts: 12,285	Welcome aboard. Inexpensive legacy lenses is a hallmark of the Pentax K mount. There are plenty of lenses out there that are native to the K mount.

01-25-2019, 03:12 PM	#7
Ash Loyal Site Supporter Join Date: Mar 2007 Location: Toowoomba, Queensland Photos: Gallery \| Albums Posts: 23,920	Welcome here. I would agree that it is better for image quality and compatibility that you stick to the lenses that have the native mount of your camera. Canon lenses on Canon and K-mount lenses on Pentax.

01-25-2019, 03:41 PM - 1 Like	#8
twilhelm Loyal Site Supporter Join Date: Feb 2009 Location: Florida Photos: Gallery \| Albums Posts: 2,369	If you want to use "other brand" lenses on your Pentax, I would recommend buying the M42 adapter and looking for M42 lenses. You'll find them in every country in the world and some can be had very cheap.

01-26-2019, 12:09 AM	#9
paoestrellado New Member Join Date: Sep 2018 Posts: 5 Original Poster	there are limited pentax users here in our country that's what i'm looking for other lenses.

01-26-2019, 02:46 AM	#11
Sandy Hancock Moderator Site Supporter Join Date: Feb 2012 Location: Adelaide Hills, South Australia Photos: Gallery \| Albums Posts: 11,272	I can only echo everyone else's advice. Get some K-mount lenses, or a Canon body.

01-26-2019, 02:49 AM	#12
paoestrellado New Member Join Date: Sep 2018 Posts: 5 Original Poster	Originally posted by Adam For everyday shooting, adapting a modern Canon lens to a Pentax DSLR is not something that will benefit you. It would be better to just use a Canon body in that case, since the adapter will cost you automation and image quality. That said, there are plenty of third-party lenses in the K-mount which might be easier to source if there are no Pentax dealers in your area: Third Party Lenses \| PentaxForums.com Not to mention the tons of legacy K-mount lenses, and M42 lenses, made by Pentax and others, which are a great value and are easy to find online. Our lens databases are a great resource for finding lenses. it's okay to fit a m42 lens on a s-2 ?

01-26-2019, 04:29 AM - 1 Like	#13
Sandy Hancock Moderator Site Supporter Join Date: Feb 2012 Location: Adelaide Hills, South Australia Photos: Gallery \| Albums Posts: 11,272	Originally posted by paoestrellado it's okay to fit a m42 lens on a s-2 ? Absolutely. All Pentax bodies work with M42 lenses. You'll need an adaptor. It's worth paying a few extra dollars for the Pentax version.

01-26-2019, 04:51 AM - 1 Like	#14
rawr Veteran Member Join Date: Jun 2009 Posts: 11,913	Originally posted by paoestrellado there are limited pentax users here in our country Since you are from PH, and Pentax cameras are made in the Philippines (and have been for a few decades), I am surprised to hear that there are only a limited number of Pentax users there. I always thought it likely that there would be more Pentax users there than other places.

01-27-2019, 08:04 AM	#15
paoestrellado New Member Join Date: Sep 2018 Posts: 5 Original Poster	Originally posted by Sandy Hancock Absolutely. All Pentax bodies work with M42 lenses. You'll need an adaptor. It's worth paying a few extra dollars for the Pentax version. Thank you! will check on that. ---------- Post added 01-27-19 at 08:07 AM ---------- Originally posted by rawr Since you are from PH, and Pentax cameras are made in the Philippines (and have been for a few decades), I am surprised to hear that there are only a limited number of Pentax users there. I always thought it likely that there would be more Pentax users there than other places. Oh don't be, we have a facebook group for us ph users of pentax and we are only a less of a thousand there, and some of them are not that active. canon, fuji, nikon, and sony are the most used brands here.