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christiandre · 03-07-2016, 11:29 AM

I plan to buy a K-1, but I look for a standard 35mm prime lens (+ or - 50mm APS-C) because it's my favorite focal length for everyday. I made a choice based on several factors (k-mount, not too big & limited size, test results etc ...) and I get to some solutions. I like lenses with personality, a bit special colorimetry... good sharpness, 3d effect must remain acceptables but I like the lens with silky character, cool personnality.. This should be versatile : landscape, portrait , urban or nature, B&W ... manual focus does not bother me..
Just want your advices please....

1) summicron-R 50mm (with leitax adapter for k-mount)... not a razor sharp but I love the atmosphere that can come from, this lens IMO is very special and it's unusual...
2) voigtlander nokton 58mm : very rare in Europe, I have little hope to find one in the months and years ahead... same for the Zeiss 50mm F2 (the F1.4 looks pretty mediocre)
3) ?
4) ?
...

... maybe m42 lenses, with the K-1 ? I'm afraid there is some vignetting... and it's a little annoying to change mount every time ...
thank you

**jatrax** · 03-07-2016, 11:35 AM

I'm confused. You say you want a 35mm lens then show examples of 50mm and 58mm lenses. Do you want 50 or 35?

stevebrot · 03-07-2016, 11:37 AM

OK...just for clarification...You are looking for K-mount/M42 "normal" lenses for the 24x36mm FF format and not 35mm focal length, right?

1) FA 43/1.9 Limited
2) Helios 44-3 58/2 (preferably a MC version)*

Steve

* May require sanding down the rear surface of the focus ring to clear the mount on non-Zenit bodies.

stevebrot · 03-07-2016, 11:39 AM

Originally posted by christiandre

... maybe m42 lenses, with the K-1 ? I'm afraid there is some vignetting... and it's a little annoying to change mount every time ...

Vignette on M42 lenses should be no more of an issue than with K-mount glass at the same focal length.

BTW...you may want to note that the Zeiss ZK 50/2 Makro-Planar T* is a very different lens than the Zeiss ZM 50/2 Planar T*. Image search results will show results from both lenses.

Steve

Last edited by stevebrot; 03-07-2016 at 11:47 AM.

christiandre · 03-07-2016, 11:41 AM

35mm on K-1
(= 50/52mm lens on my K5IIs)

bertwert · 03-07-2016, 11:46 AM

Originally posted by christiandre

35mm on K-1
(= 50/52mm lens on my K5IIs)

No no no! If you like 50mm lenses on your K-5 and want the same FoV on the K-1 you'll need a 75mm lens. It's a crop factor of 1.5. A 35mm lens on the K-1 would look like a 24mm on a K-5.

Topsy · 03-07-2016, 11:46 AM

If you want the same field of view as a 50mm lens on your K5IIs you'll want to look for something int he region on 75mm to 80mm (written on the lens!), no 35mm.

Edit; sneaky ninja-bert!

christiandre · 03-07-2016, 11:54 AM

sorry, maybe my bad english : on my (next) K-1 i want the same field of view as a 35mm lens on my K5IIs

**jatrax** · 03-07-2016, 11:54 AM

Originally posted by christiandre

35mm on K-1 (= 50/52mm lens on my K5IIs)

As noted above, I think you have this backwards. You need the FA 77mm Limited.

---------- Post added 03-07-16 at 10:55 AM ----------

Originally posted by christiandre

sorry, maybe my bad english : on my (next) K-1 i want the same field of view as a 35mm lens on my K5IIs

Now I think we understand.

bertwert · 03-07-2016, 11:56 AM

Originally posted by Topsy

Edit; sneaky ninja-bert!

Originally posted by christiandre

sorry, maybe my bad english : on my (next) K-1 i want the same field of view as a 35mm lens on my K5IIs

So around a 50mm lens?

VoiceOfReason · 03-07-2016, 11:57 AM

Originally posted by christiandre

sorry, maybe my bad english : on my (next) K-1 i want the same field of view as a 35mm lens on my K5IIs

In that case even the DA 50 f/1.8 would be perfect for you.

christiandre · 03-07-2016, 11:57 AM

but I can accept 28mm to 35/38

**jatrax** · 03-07-2016, 11:57 AM

Originally posted by bertwert

So around a 50mm lens?

I think that's where we started......................

stevebrot · 03-07-2016, 11:57 AM

Originally posted by christiandre

35mm on K-1
(= 50/52mm lens on my K5IIs)

K-5IIs 35mm = 35mm on the K-1
K-1 50mm = 50mm on the K-5IIs

Focal length stays the same regardless of the camera behind the lens. What changes between the two cameras is field of view (FOV) at a particular focal length with the K-5IIs have a narrower FOV. The image on the K-5IIs is literally a 2/3 crop of what might be captured with the K-1. If you enjoy the 35mm FOV on your K-5IIs, a 50mm lens is about the same on the K-1. If you enjoy the 50mm FOV on your K-5IIs, 75mm is about the same on the K-1.

Steve

bertwert · 03-07-2016, 11:59 AM

Originally posted by christiandre

but I can accept 28mm to 35/38

So you want a FoV from a lens 42mm-57mm on FF?

FA 43/1.9 Limited?
http://www.bhphotovideo.com/c/product/409200-USA/Pentax_20180_SMCP_FA_43mm_f_1_9_Limited.html

03-07-2016, 11:29 AM	#1
christiandre Inactive Account Join Date: Jul 2015 Posts: 157	35mm for K-1 ? I plan to buy a K-1, but I look for a standard 35mm prime lens (+ or - 50mm APS-C) because it's my favorite focal length for everyday. I made a choice based on several factors (k-mount, not too big & limited size, test results etc ...) and I get to some solutions. I like lenses with personality, a bit special colorimetry... good sharpness, 3d effect must remain acceptables but I like the lens with silky character, cool personnality.. This should be versatile : landscape, portrait , urban or nature, B&W ... manual focus does not bother me.. Just want your advices please.... 1) summicron-R 50mm (with leitax adapter for k-mount)... not a razor sharp but I love the atmosphere that can come from, this lens IMO is very special and it's unusual... 2) voigtlander nokton 58mm : very rare in Europe, I have little hope to find one in the months and years ahead... same for the Zeiss 50mm F2 (the F1.4 looks pretty mediocre) 3) ? 4) ? ... ... maybe m42 lenses, with the K-1 ? I'm afraid there is some vignetting... and it's a little annoying to change mount every time ... thank you

03-07-2016, 11:37 AM	#3
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	OK...just for clarification...You are looking for K-mount/M42 "normal" lenses for the 24x36mm FF format and not 35mm focal length, right? 1) FA 43/1.9 Limited 2) Helios 44-3 58/2 (preferably a MC version)* Steve * May require sanding down the rear surface of the focus ring to clear the mount on non-Zenit bodies. Last edited by stevebrot; 03-07-2016 at 11:52 AM.

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03-07-2016, 11:35 AM	#2
jatrax Site Supporter Join Date: May 2010 Location: Washington Cascades Photos: Gallery \| Albums Posts: 12,992	I'm confused. You say you want a 35mm lens then show examples of 50mm and 58mm lenses. Do you want 50 or 35?

03-07-2016, 11:39 AM	#4
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by christiandre ... maybe m42 lenses, with the K-1 ? I'm afraid there is some vignetting... and it's a little annoying to change mount every time ... Vignette on M42 lenses should be no more of an issue than with K-mount glass at the same focal length. BTW...you may want to note that the Zeiss ZK 50/2 Makro-Planar T* is a very different lens than the Zeiss ZM 50/2 Planar T. Image search results will show results from both lenses. Steve Last edited by stevebrot; 03-07-2016 at 11:47 AM.*

03-07-2016, 11:41 AM	#5
christiandre Inactive Account Join Date: Jul 2015 Posts: 157 Original Poster	35mm on K-1 (= 50/52mm lens on my K5IIs)

03-07-2016, 11:46 AM	#6
bertwert Veteran Member Join Date: Jun 2015 Location: Golden, BC Posts: 15,172	Originally posted by christiandre 35mm on K-1 (= 50/52mm lens on my K5IIs) No no no! If you like 50mm lenses on your K-5 and want the same FoV on the K-1 you'll need a 75mm lens. It's a crop factor of 1.5. A 35mm lens on the K-1 would look like a 24mm on a K-5.

03-07-2016, 11:46 AM	#7
Topsy Veteran Member Join Date: Feb 2014 Photos: Gallery \| Albums Posts: 625	If you want the same field of view as a 50mm lens on your K5IIs you'll want to look for something int he region on 75mm to 80mm (written on the lens!), no 35mm. Edit; sneaky ninja-bert!

03-07-2016, 11:54 AM	#8
christiandre Inactive Account Join Date: Jul 2015 Posts: 157 Original Poster	sorry, maybe my bad english : on my (next) K-1 i want the same field of view as a 35mm lens on my K5IIs

03-07-2016, 11:56 AM	#10
bertwert Veteran Member Join Date: Jun 2015 Location: Golden, BC Posts: 15,172	Originally posted by Topsy Edit; sneaky ninja-bert! Originally posted by christiandre sorry, maybe my bad english : on my (next) K-1 i want the same field of view as a 35mm lens on my K5IIs So around a 50mm lens?

03-07-2016, 11:57 AM	#11
VoiceOfReason Site Supporter Join Date: Jun 2010 Location: Mishawaka IN area Photos: Albums Posts: 6,124	Originally posted by christiandre sorry, maybe my bad english : on my (next) K-1 i want the same field of view as a 35mm lens on my K5IIs In that case even the DA 50 f/1.8 would be perfect for you.

03-07-2016, 11:57 AM	#12
christiandre Inactive Account Join Date: Jul 2015 Posts: 157 Original Poster	but I can accept 28mm to 35/38

03-07-2016, 11:57 AM	#13
jatrax Site Supporter Join Date: May 2010 Location: Washington Cascades Photos: Gallery \| Albums Posts: 12,992	Originally posted by bertwert So around a 50mm lens? I think that's where we started......................

03-07-2016, 11:57 AM	#14
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by christiandre 35mm on K-1 (= 50/52mm lens on my K5IIs) K-5IIs 35mm = 35mm on the K-1 K-1 50mm = 50mm on the K-5IIs Focal length stays the same regardless of the camera behind the lens. What changes between the two cameras is field of view (FOV) at a particular focal length with the K-5IIs have a narrower FOV. The image on the K-5IIs is literally a 2/3 crop of what might be captured with the K-1. If you enjoy the 35mm FOV on your K-5IIs, a 50mm lens is about the same on the K-1. If you enjoy the 50mm FOV on your K-5IIs, 75mm is about the same on the K-1. Steve

03-07-2016, 11:59 AM	#15
bertwert Veteran Member Join Date: Jun 2015 Location: Golden, BC Posts: 15,172	Originally posted by christiandre but I can accept 28mm to 35/38 So you want a FoV from a lens 42mm-57mm on FF? FA 43/1.9 Limited? http://www.bhphotovideo.com/c/product/409200-USA/Pentax_20180_SMCP_FA_43mm_f_1_9_Limited.html

35mm for K-1 ?

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