Lens compatibility from a zx50 to a k3

godzuki · 09-28-2018, 04:39 PM

Hello ive had a nice zx50 for a very long time I love it. im thinking of getting a K3 and I see I can buy just the body at not a bad price and im wondering will the lenses from my zx50 that I have fit and work correctly on the new K3.

Thank You
Jim

Last edited by MarkJerling; 10-02-2018 at 02:43 PM.

Not a Number · 09-28-2018, 05:08 PM

All your lenses should be compatible with a K-3. Check the resources below.

The Pentax Camera Lens Compatibility Chart
Check Lens Compatibility with Your Pentax Camera[COLOR="Silver"]

godzuki · 09-28-2018, 07:13 PM

hmm I do not see either lens on those 2
well these are the 2 I have

1.smc pentax-fa 28-80mm came with camera
2. sigma DL macro super 70-300mm

Adam · 09-28-2018, 08:17 PM - **1 Like**

Older Pentax lenses almost always work on newer bodies. However, I'd recommend you get some modern glass for that K-3

Adam
PentaxForums.com Webmaster (Site Usage Guide | Site Help | My Photography)

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**boriscleto** · 09-28-2018, 08:20 PM - **1 Like**

Originally posted by godzuki

hmm I do not see either lens on those 2
well these are the 2 I have

1.smc pentax-fa 28-80mm came with camera
2. sigma DL macro super 70-300mm

Yes. Both those lenses are compatible with the K-3. They will have a different FoV on the K-3 (APS-C) than they had on the ZX-50 (FF), but they will work just fine. The 28-80 will have a normal to telephoto FoV (43-120 equivalent) and the 70-300 will be telephoto to super-telephoto FoV (105-400 equivalent).

I would suggest getting the DA 18-55 WR at the very least, the 18-135 or 16-85 would be even better...

Not a Number · 09-29-2018, 08:20 AM

As I recall the biggest incompatibility will be with the power zoom functions like the retract on power off.

Kim Coxon · 09-29-2018, 03:35 PM

Originally posted by Not a Number

As I recall the biggest incompatibility will be with the power zoom functions like the retract on power off.

ZX-50 never had the contacts for power zoom.

godzuki · 09-30-2018, 04:27 AM

Originally posted by Kim Coxon

ZX-50 never had the contacts for power zoom.

Power zoom you mean auto focus sorry I'm a newb at some of these terms. I know ours did auto focus and the lenses moved by itself but you could switch to manual.

I'm basically getting this for a trip I'm going to take next year. I'm riding my motorcycle from Indiana to Alaska and the artic circle and back. It will take me 4 weeks. I know I'm going to want to take pics and I want some thing easy to shoot and to store the images. The 35mm rolls well those will take up space and there would be a ton of them. I can snap alot of pics and I like how far the digital slrs have come. I also liked how easy my zx50 was to use. So I've decided on the k3 which is a realy nice price right now and I was hoping to save some cash if the old lenses will work which it sounds like they will. I may get another modern lens to take with me for comparison and see what that's like.

Kim Coxon · 09-30-2018, 04:48 AM

Originally posted by godzuki

Power zoom you mean auto focus sorry I'm a newb at some of these terms. I know ours did auto focus and the lenses moved by itself but you could switch to manual.

I'm basically getting this for a trip I'm going to take next year. I'm riding my motorcycle from Indiana to Alaska and the artic circle and back. It will take me 4 weeks. I know I'm going to want to take pics and I want some thing easy to shoot and to store the images. The 35mm rolls well those will take up space and there would be a ton of them. I can snap alot of pics and I like how far the digital slrs have come. I also liked how easy my zx50 was to use. So I've decided on the k3 which is a realy nice price right now and I was hoping to save some cash if the old lenses will work which it sounds like they will. I may get another modern lens to take with me for comparison and see what that's like.

The powerzoom was something introduced on their more expensive bodies and lenses. You could zoom the lens by twisting the ring as in many zoom lenses. But if you moved the ring back, it became sprung loaded and the lens was zoomed electrically. It could also be used for other functions.

More information here Features and Operation of the KAF2 Mount | The K-Mount Page and here Summary of the K-Mount Evolution, Names, and Features | The K-Mount Page

However, neither of your lenses had the powerzoom facility so not really relevant to you. However if they had, the powerzoom can be used on a K3. Because the K3 has an APS sensor, it would be worth getting a lens which covers the wider angles as has already been mentioned.

**twilhelm** · 09-30-2018, 05:03 AM - **1 Like**

Add one new lens in the wider and weather resistant department and you’ll have a nice set up for the trip. Personally I’d recommend either the DA 20-40 or the 18-135, both are WR and with the K3 will give you a WR kit for those times you get stuck in the rain.

Enjoy the trip and be sure to share some pictures!

**twilhelm** · 09-30-2018, 05:04 AM

Add one new lens in the wider and weather resistant department and you’ll have a nice set up for the trip. Personally I’d recommend either the DA 20-40 or the 18-135, both are WR and with the K3 will give you a WR kit for those times you get stuck in the rain.

Enjoy the trip and be sure to share some pictures!

godzuki · 09-30-2018, 04:57 PM

Okay I understand now no mine do not have this.

Yes the wide angle I've been seeing and water proof or is that weather resistant. I'm sure at some point on this trip it will rain on me lol I have all water proof gear just for this but I hadent thought about the water proof. Thank you.

**Just1MoreDave** · 09-30-2018, 06:40 PM

Originally posted by godzuki

Okay I understand now no mine do not have this.

Yes the wide angle I've been seeing and water proof or is that weather resistant. I'm sure at some point on this trip it will rain on me lol I have all water proof gear just for this but I hadent thought about the water proof. Thank you.

You probably will see package deals with a WR lens in the deal, one of the ones other people mentioned. It's nice to have at least one WR lens for a little extra piece of mind, and it my work out better to buy it with the camera.

godzuki · 10-01-2018, 04:24 PM - **4 Likes**

okay thank you all I just ordered the k3 and a 18-135 wr lens to go with it. woo hoo

**twilhelm** · 10-01-2018, 05:39 PM - **1 Like**

Originally posted by godzuki

okay thank you all I just ordered the k3 and a 18-135 wr lense to go with it. woo hoo

Enjoy the new kit! It is very capable and should provide you years of great service!

09-28-2018, 04:39 PM	#1
godzuki New Member Join Date: Sep 2018 Posts: 5	Lens compatibility from a zx50 to a k3 Hello ive had a nice zx50 for a very long time I love it. im thinking of getting a K3 and I see I can buy just the body at not a bad price and im wondering will the lenses from my zx50 that I have fit and work correctly on the new K3. Thank You Jim Last edited by MarkJerling; 10-02-2018 at 02:43 PM.

09-28-2018, 05:08 PM	#2
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	All your lenses should be compatible with a K-3. Check the resources below. The Pentax Camera Lens Compatibility Chart Check Lens Compatibility with Your Pentax Camera[COLOR="Silver"] Last edited by Not a Number; 09-28-2018 at 05:15 PM.

09-30-2018, 04:48 AM	#9
Kim Coxon Senior Member Join Date: Sep 2018 Posts: 135	Originally posted by godzuki Power zoom you mean auto focus sorry I'm a newb at some of these terms. I know ours did auto focus and the lenses moved by itself but you could switch to manual. I'm basically getting this for a trip I'm going to take next year. I'm riding my motorcycle from Indiana to Alaska and the artic circle and back. It will take me 4 weeks. I know I'm going to want to take pics and I want some thing easy to shoot and to store the images. The 35mm rolls well those will take up space and there would be a ton of them. I can snap alot of pics and I like how far the digital slrs have come. I also liked how easy my zx50 was to use. So I've decided on the k3 which is a realy nice price right now and I was hoping to save some cash if the old lenses will work which it sounds like they will. I may get another modern lens to take with me for comparison and see what that's like. The powerzoom was something introduced on their more expensive bodies and lenses. You could zoom the lens by twisting the ring as in many zoom lenses. But if you moved the ring back, it became sprung loaded and the lens was zoomed electrically. It could also be used for other functions. More information here Features and Operation of the KAF2 Mount \| The K-Mount Page and here Summary of the K-Mount Evolution, Names, and Features \| The K-Mount Page However, neither of your lenses had the powerzoom facility so not really relevant to you. However if they had, the powerzoom can be used on a K3. Because the K3 has an APS sensor, it would be worth getting a lens which covers the wider angles as has already been mentioned. Last edited by Kim Coxon; 09-30-2018 at 04:55 AM.

10-01-2018, 04:24 PM - 4 Likes	#14
godzuki New Member Join Date: Sep 2018 Posts: 5 Original Poster	okay thank you all I just ordered the k3 and a 18-135 wr lens to go with it. woo hoo Last edited by MarkJerling; 10-02-2018 at 02:42 PM.

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09-28-2018, 07:13 PM	#3
godzuki New Member Join Date: Sep 2018 Posts: 5 Original Poster	hmm I do not see either lens on those 2 well these are the 2 I have 1.smc pentax-fa 28-80mm came with camera 2. sigma DL macro super 70-300mm

09-28-2018, 08:17 PM - 1 Like	#4
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,608	Older Pentax lenses almost always work on newer bodies. However, I'd recommend you get some modern glass for that K-3 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:

09-28-2018, 08:20 PM - 1 Like	#5
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,477	Originally posted by godzuki hmm I do not see either lens on those 2 well these are the 2 I have 1.smc pentax-fa 28-80mm came with camera 2. sigma DL macro super 70-300mm Yes. Both those lenses are compatible with the K-3. They will have a different FoV on the K-3 (APS-C) than they had on the ZX-50 (FF), but they will work just fine. The 28-80 will have a normal to telephoto FoV (43-120 equivalent) and the 70-300 will be telephoto to super-telephoto FoV (105-400 equivalent). I would suggest getting the DA 18-55 WR at the very least, the 18-135 or 16-85 would be even better...

09-29-2018, 08:20 AM	#6
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	As I recall the biggest incompatibility will be with the power zoom functions like the retract on power off.

09-29-2018, 03:35 PM	#7
Kim Coxon Senior Member Join Date: Sep 2018 Posts: 135	Originally posted by Not a Number As I recall the biggest incompatibility will be with the power zoom functions like the retract on power off. ZX-50 never had the contacts for power zoom.

09-30-2018, 04:27 AM	#8
godzuki New Member Join Date: Sep 2018 Posts: 5 Original Poster	Originally posted by Kim Coxon ZX-50 never had the contacts for power zoom. Power zoom you mean auto focus sorry I'm a newb at some of these terms. I know ours did auto focus and the lenses moved by itself but you could switch to manual. I'm basically getting this for a trip I'm going to take next year. I'm riding my motorcycle from Indiana to Alaska and the artic circle and back. It will take me 4 weeks. I know I'm going to want to take pics and I want some thing easy to shoot and to store the images. The 35mm rolls well those will take up space and there would be a ton of them. I can snap alot of pics and I like how far the digital slrs have come. I also liked how easy my zx50 was to use. So I've decided on the k3 which is a realy nice price right now and I was hoping to save some cash if the old lenses will work which it sounds like they will. I may get another modern lens to take with me for comparison and see what that's like.

09-30-2018, 05:03 AM - 1 Like	#10
twilhelm Loyal Site Supporter Join Date: Feb 2009 Location: Florida Photos: Gallery \| Albums Posts: 2,369	Add one new lens in the wider and weather resistant department and you’ll have a nice set up for the trip. Personally I’d recommend either the DA 20-40 or the 18-135, both are WR and with the K3 will give you a WR kit for those times you get stuck in the rain. Enjoy the trip and be sure to share some pictures!

09-30-2018, 05:04 AM	#11
twilhelm Loyal Site Supporter Join Date: Feb 2009 Location: Florida Photos: Gallery \| Albums Posts: 2,369	Add one new lens in the wider and weather resistant department and you’ll have a nice set up for the trip. Personally I’d recommend either the DA 20-40 or the 18-135, both are WR and with the K3 will give you a WR kit for those times you get stuck in the rain. Enjoy the trip and be sure to share some pictures!

09-30-2018, 04:57 PM	#12
godzuki New Member Join Date: Sep 2018 Posts: 5 Original Poster	Okay I understand now no mine do not have this. Yes the wide angle I've been seeing and water proof or is that weather resistant. I'm sure at some point on this trip it will rain on me lol I have all water proof gear just for this but I hadent thought about the water proof. Thank you.

09-30-2018, 06:40 PM	#13
Just1MoreDave Site Supporter Join Date: Feb 2007 Location: Aurora, CO Photos: Gallery \| Albums Posts: 6,340	Originally posted by godzuki Okay I understand now no mine do not have this. Yes the wide angle I've been seeing and water proof or is that weather resistant. I'm sure at some point on this trip it will rain on me lol I have all water proof gear just for this but I hadent thought about the water proof. Thank you. You probably will see package deals with a WR lens in the deal, one of the ones other people mentioned. It's nice to have at least one WR lens for a little extra piece of mind, and it my work out better to buy it with the camera.

10-01-2018, 05:39 PM - 1 Like	#15
twilhelm Loyal Site Supporter Join Date: Feb 2009 Location: Florida Photos: Gallery \| Albums Posts: 2,369	Originally posted by godzuki okay thank you all I just ordered the k3 and a 18-135 wr lense to go with it. woo hoo Enjoy the new kit! It is very capable and should provide you years of great service!