Win a Pentax Limited Lens: Raffle Now Live!

**BruceBanner** · 08-09-2017, 02:26 PM

I think I have pretty much summed up the subject matter for this post in the title, basically I have paid in the region of $200AUD for two ND filters that fit a 52mm thread, they work great on my DA 50mm 1.8 and 100mm 2.8 Macro DFA, now I am looking for a full frame wide angle lens to fit onto the K-1 where I can still use the filters. I have two old primes that are 28mm (a Sigma and Tokina) and they also take 52mm filters, but I wouldn't mind upgrading to something more expensive ($500 or thereabouts) for a wider lens (21mm etc) that can still be a 52mm thread.
I actually own a DA limited HD 21mm 3.2 that can also take those ND filters, but I'm not loving the results of that lens on the K-1 and need to sell it (and its not full frame so I'm not getting 21mm with it anyway).

The purpose for this lens is purely landscape, AF is not necessary, third party choices are welcome. Does such a lens exist or am I eventually going to have to sell my ND filters or factor in a new set just for a landscape lens...?

Cheers,

Bruce

Adam · 08-09-2017, 02:31 PM

There are a few vintage options as far as Pentax lenses go, unfortunately nothing modern as 52mm is not a popular diameter on Pentax primes.

<= 40mm Lenses | PentaxForums.com

Both of the 24mm options get pretty consistent reviews. The K 28mm F2 is far more expensive, I'm not sure if it's because of the rarity and optical design history or if it legitimately is that much better optically (despite being narrower). I think it's one of the new K lenses I've never tried.

disconnekt · 08-09-2017, 03:10 PM

For anyhing wider than 28mm (<24mm) with a 52mm filter thread you're pretty much limited to the older K-, M-, and A-series of lenses. For any newer lenses (e.g. Samyang/rebrands, Mitakon, etc.), are going to be in the 77mm or so range.

stevebrot · 08-09-2017, 03:11 PM - **1 Like**

Originally posted by BruceBanner

I am looking for a full frame wide angle lens to fit onto the K-1 where I can still use the filters. I have two old primes that are 28mm (a Sigma and Tokina) and they also take 52mm filters, but I wouldn't mind upgrading to something more expensive ($500 or thereabouts) for a wider lens (21mm etc) that can still be a 52mm thread.

Let me get this straight. You are wanting a K-mount prime in the $500 range at shorter than 24mm having a 52mm or narrower filter size so you can use your ND filters. Ok...

Pentax-A 24/2.8 or Pentax-K 24/2.8
Pentax-M 20/4
Voigtländer 20/3.5 Color Skopar SLII

Steve

(...trying to figure out why my fingers are better at finding out these things than B. Banner's...oh...because I am dumb enough to do it...)

Last edited by stevebrot; 08-09-2017 at 03:21 PM.

**BruceBanner** · 08-09-2017, 04:19 PM

Originally posted by Adam

There are a few vintage options as far as Pentax lenses go, unfortunately nothing modern as 52mm is not a popular diameter on Pentax primes.

<= 40mm Lenses | PentaxForums.com

Both of the 24mm options get pretty consistent reviews. The K 28mm F2 is far more expensive, I'm not sure if it's because of the rarity and optical design history or if it legitimately is that much better optically (despite being narrower). I think it's one of the new K lenses I've never tried.

Oh! I never knew that resource existed, how fabby

Cheers for assisting in narrowing down the choices, I have found an aussie ebay seller with one of those lenses

Originally posted by disconnekt

For anyhing wider than 28mm (<24mm) with a 52mm filter thread you're pretty much limited to the older K-, M-, and A-series of lenses. For any newer lenses (e.g. Samyang/rebrands, Mitakon, etc.), are going to be in the 77mm or so range.

Good to know, thanks

Originally posted by stevebrot

Let me get this straight. You are wanting a K-mount prime in the $500 range at shorter than 24mm having a 52mm or narrower filter size so you can use your ND filters. Ok...

Pentax-A 24/2.8 or Pentax-K 24/2.8
Pentax-M 20/4
Voigtländer 20/3.5 Color Skopar SLII

Steve

(...trying to figure out why my fingers are better at finding out these things than B. Banner's...oh...because I am dumb enough to do it...)

lol, I didn't know about that resource, I swear! Thanks very much for your fingering

The Pentax-M 20/4 and Voigtlander 20/3.5 I will have to research more! Thanks once again!

BB.

**BruceBanner** · 08-09-2017, 05:21 PM

Hey... is this a good or clever alternative? I found a seller with a used SMC Pentax DA 15mm ($375AUD), it's obviously intended for a ASP-C sensor, but on my K-1 I would still (in crop mode) get around 23mm. This then also brings the convenience of having AF compared to the older film era lens suggestions. Thread size is 49mm so that works for me.

So there's that or a SMC Pentax-A 24mm F2.8 going for $225AUD that are looking tempting.

Thoughts?

**jrpower10** · 08-09-2017, 05:47 PM

Depends on whether you're happy with 16mp images in crop mode vs 36 mp images in FF mode.

**jatrax** · 08-09-2017, 06:08 PM - **1 Like**

Originally posted by BruceBanner

a full frame wide angle lens to fit onto the K-1 where I can still use the filters.

Pentax-A 24mm f/2.8 works nicely on my K-1. It is amazingly tiny and has 52mm filter threads.

**BruceBanner** · 08-09-2017, 06:26 PM

Originally posted by jatrax

Pentax-A 24mm f/2.8 works nicely on my K-1. It is amazingly tiny and has 52mm filter threads.

Oh nice, got any sample images? Any existing uploads of yours somewhere for view by chance?

**sibyrnes** · 08-09-2017, 06:50 PM - **1 Like**

Originally posted by BruceBanner

Oh nice, got any sample images? Any existing uploads of yours somewhere for view by chance?

I'm not jatrax but here's a sample of my K24 24mm which supposedly has the same optics:

https://www.pentaxforums.com/forums/attachments/130-lens-sample-photo-archiv...rocks-1975.jpg

bm75 · 08-09-2017, 10:25 PM - **1 Like**

M 20 f/4 takes 49 mm. I easily use alu conversion rings for round filters, they're inexpensive. in this you have to use just one 52 -49 and if it's a slim type you don't have to worry about vignetting. My copy of the 20 is a gem, but I haven't tested on FF.

**BruceBanner** · 08-09-2017, 11:46 PM - **2 Likes**

Well... after a short amount of research and shopping around I am (already) the proud new owner of SMC Pentax-A 24mm F2.8, purchased from within Australia for $220AUD, which was a major contributing factor (wasn't so keen on grabbing one from further away). Keen to see how it performs on my K-1

biz-engineer · 08-10-2017, 12:07 AM

Originally posted by BruceBanner

I have paid in the region of $200AUD for two ND filters that fit a 52mm thread, they work great on my DA 50mm 1.8 and 100mm 2.8 Macro DFA, now I am looking for a full frame wide angle lens to fit onto the K-1 where I can still use the filters.

I'm in similar situation but my filters are 82mm. Also have a set of Cokin Pro series that are too narrow to fit the wide angles lenses. Lesson learned: take my losses and buy a high quality square filter system, larger than the largest lens front and be done with it. Filter are like tripods, the kind of accessory that last longer that cameras and independent from the mount, they are long term investments. Trying to adapt the lens to filters is the wrong way, usually, it makes more sense to adapt the filters to the lenses we own.

**BruceBanner** · 08-10-2017, 01:02 AM

Originally posted by biz-engineer

I'm in similar situation but my filters are 82mm. Also have a set of Cokin Pro series that are too narrow to fit the wide angles lenses. Lesson learned: take my losses and buy a high quality square filter system, larger than the largest lens front and be done with it. Filter are like tripods, the kind of accessory that last longer that cameras and independent from the mount, they are long term investments. Trying to adapt the lens to filters is the wrong way, usually, it makes more sense to adapt the filters to the lenses we own.

Yeh, pretty sensible conclusion. I think long term I'll be going down this route, but for now I 'should be' content with a lot of my future photography work, I'll have a 24mm, 50mm and 100mm primes with ND filters compatible on all 3 of those, so I'm seeing this as $200 spent to tie me over a few years.

**southlander** · 08-10-2017, 03:20 AM

All of the M series up to short telephoto are 49mm filter threads so a cheap 49-52mm ring adapter would allow any of these to use 52mm filters. The M 28/3.5 I consider to be a good wide angle lens. And cheap too. The M20/4 is much dearer and, based on my copy, is not that sharp at infinity. It seems sharpest out to mid range. So good for some things but not ideal for landscapes in my view. Fine for sunsets etc where there is not a lot of detail as it does great colours but less suited for fine detail like distant landscapes. Other copies might be better but it is a scarce lens and pricy for what it is so I haven't been inclined to seek out a second copy.

08-09-2017, 02:26 PM	#1
BruceBanner Site Supporter Join Date: Dec 2015 Posts: 5,405	Wide angle Lens for K-1 (ie FF) that takes 52mm ND Filters I think I have pretty much summed up the subject matter for this post in the title, basically I have paid in the region of $200AUD for two ND filters that fit a 52mm thread, they work great on my DA 50mm 1.8 and 100mm 2.8 Macro DFA, now I am looking for a full frame wide angle lens to fit onto the K-1 where I can still use the filters. I have two old primes that are 28mm (a Sigma and Tokina) and they also take 52mm filters, but I wouldn't mind upgrading to something more expensive ($500 or thereabouts) for a wider lens (21mm etc) that can still be a 52mm thread. I actually own a DA limited HD 21mm 3.2 that can also take those ND filters, but I'm not loving the results of that lens on the K-1 and need to sell it (and its not full frame so I'm not getting 21mm with it anyway). The purpose for this lens is purely landscape, AF is not necessary, third party choices are welcome. Does such a lens exist or am I eventually going to have to sell my ND filters or factor in a new set just for a landscape lens...? Cheers, Bruce

08-09-2017, 02:31 PM	#2
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,608	There are a few vintage options as far as Pentax lenses go, unfortunately nothing modern as 52mm is not a popular diameter on Pentax primes. <= 40mm Lenses \| PentaxForums.com Both of the 24mm options get pretty consistent reviews. The K 28mm F2 is far more expensive, I'm not sure if it's because of the rarity and optical design history or if it legitimately is that much better optically (despite being narrower). I think it's one of the new K lenses I've never tried. 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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08-09-2017, 03:10 PM	#3
disconnekt Pentaxian Join Date: Oct 2011 Location: SoCal/I.E. Photos: Albums Posts: 1,702	For anyhing wider than 28mm (<24mm) with a 52mm filter thread you're pretty much limited to the older K-, M-, and A-series of lenses. For any newer lenses (e.g. Samyang/rebrands, Mitakon, etc.), are going to be in the 77mm or so range.

08-09-2017, 03:11 PM - 1 Like	#4
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by BruceBanner I am looking for a full frame wide angle lens to fit onto the K-1 where I can still use the filters. I have two old primes that are 28mm (a Sigma and Tokina) and they also take 52mm filters, but I wouldn't mind upgrading to something more expensive ($500 or thereabouts) for a wider lens (21mm etc) that can still be a 52mm thread. Let me get this straight. You are wanting a K-mount prime in the $500 range at shorter than 24mm having a 52mm or narrower filter size so you can use your ND filters. Ok... Pentax-A 24/2.8 or Pentax-K 24/2.8 Pentax-M 20/4 Voigtländer 20/3.5 Color Skopar SLII Steve (...trying to figure out why my fingers are better at finding out these things than B. Banner's...oh...because I am dumb enough to do it...) Last edited by stevebrot; 08-09-2017 at 03:21 PM.

08-09-2017, 04:19 PM	#5
BruceBanner Site Supporter Join Date: Dec 2015 Posts: 5,405 Original Poster	Originally posted by Adam There are a few vintage options as far as Pentax lenses go, unfortunately nothing modern as 52mm is not a popular diameter on Pentax primes. <= 40mm Lenses \| PentaxForums.com Both of the 24mm options get pretty consistent reviews. The K 28mm F2 is far more expensive, I'm not sure if it's because of the rarity and optical design history or if it legitimately is that much better optically (despite being narrower). I think it's one of the new K lenses I've never tried. Oh! I never knew that resource existed, how fabby Cheers for assisting in narrowing down the choices, I have found an aussie ebay seller with one of those lenses Originally posted by disconnekt For anyhing wider than 28mm (<24mm) with a 52mm filter thread you're pretty much limited to the older K-, M-, and A-series of lenses. For any newer lenses (e.g. Samyang/rebrands, Mitakon, etc.), are going to be in the 77mm or so range. Good to know, thanks Originally posted by stevebrot Let me get this straight. You are wanting a K-mount prime in the $500 range at shorter than 24mm having a 52mm or narrower filter size so you can use your ND filters. Ok... Pentax-A 24/2.8 or Pentax-K 24/2.8 Pentax-M 20/4 Voigtländer 20/3.5 Color Skopar SLII Steve (...trying to figure out why my fingers are better at finding out these things than B. Banner's...oh...because I am dumb enough to do it...) lol, I didn't know about that resource, I swear! Thanks very much for your fingering The Pentax-M 20/4 and Voigtlander 20/3.5 I will have to research more! Thanks once again! BB.

08-09-2017, 05:21 PM	#6
BruceBanner Site Supporter Join Date: Dec 2015 Posts: 5,405 Original Poster	Hey... is this a good or clever alternative? I found a seller with a used SMC Pentax DA 15mm ($375AUD), it's obviously intended for a ASP-C sensor, but on my K-1 I would still (in crop mode) get around 23mm. This then also brings the convenience of having AF compared to the older film era lens suggestions. Thread size is 49mm so that works for me. So there's that or a SMC Pentax-A 24mm F2.8 going for $225AUD that are looking tempting. Thoughts?

08-09-2017, 05:47 PM	#7
jrpower10 Site Supporter Join Date: Sep 2011 Location: Richland, Washington, USA Posts: 935	Depends on whether you're happy with 16mp images in crop mode vs 36 mp images in FF mode.

08-09-2017, 06:08 PM - 1 Like	#8
jatrax Site Supporter Join Date: May 2010 Location: Washington Cascades Photos: Gallery \| Albums Posts: 12,991	Originally posted by BruceBanner a full frame wide angle lens to fit onto the K-1 where I can still use the filters. Pentax-A 24mm f/2.8 works nicely on my K-1. It is amazingly tiny and has 52mm filter threads.

08-09-2017, 06:26 PM	#9
BruceBanner Site Supporter Join Date: Dec 2015 Posts: 5,405 Original Poster	Originally posted by jatrax Pentax-A 24mm f/2.8 works nicely on my K-1. It is amazingly tiny and has 52mm filter threads. Oh nice, got any sample images? Any existing uploads of yours somewhere for view by chance?

08-09-2017, 06:50 PM - 1 Like	#10
sibyrnes Site Supporter Join Date: May 2016 Location: Pittsburgh, Pa. Photos: Gallery \| Albums Posts: 447	Originally posted by BruceBanner Oh nice, got any sample images? Any existing uploads of yours somewhere for view by chance? I'm not jatrax but here's a sample of my K24 24mm which supposedly has the same optics: https://www.pentaxforums.com/forums/attachments/130-lens-sample-photo-archiv...rocks-1975.jpg

08-09-2017, 10:25 PM - 1 Like	#11
bm75 Veteran Member Join Date: Aug 2014 Location: Italia Photos: Albums Posts: 354	M 20 f/4 takes 49 mm. I easily use alu conversion rings for round filters, they're inexpensive. in this you have to use just one 52 -49 and if it's a slim type you don't have to worry about vignetting. My copy of the 20 is a gem, but I haven't tested on FF.

08-09-2017, 11:46 PM - 2 Likes	#12
BruceBanner Site Supporter Join Date: Dec 2015 Posts: 5,405 Original Poster	Well... after a short amount of research and shopping around I am (already) the proud new owner of SMC Pentax-A 24mm F2.8, purchased from within Australia for $220AUD, which was a major contributing factor (wasn't so keen on grabbing one from further away). Keen to see how it performs on my K-1

08-10-2017, 12:07 AM	#13
biz-engineer Pentaxian Join Date: Feb 2015 Photos: Gallery Posts: 12,249	Originally posted by BruceBanner I have paid in the region of $200AUD for two ND filters that fit a 52mm thread, they work great on my DA 50mm 1.8 and 100mm 2.8 Macro DFA, now I am looking for a full frame wide angle lens to fit onto the K-1 where I can still use the filters. I'm in similar situation but my filters are 82mm. Also have a set of Cokin Pro series that are too narrow to fit the wide angles lenses. Lesson learned: take my losses and buy a high quality square filter system, larger than the largest lens front and be done with it. Filter are like tripods, the kind of accessory that last longer that cameras and independent from the mount, they are long term investments. Trying to adapt the lens to filters is the wrong way, usually, it makes more sense to adapt the filters to the lenses we own.

08-10-2017, 01:02 AM	#14
BruceBanner Site Supporter Join Date: Dec 2015 Posts: 5,405 Original Poster	Originally posted by biz-engineer I'm in similar situation but my filters are 82mm. Also have a set of Cokin Pro series that are too narrow to fit the wide angles lenses. Lesson learned: take my losses and buy a high quality square filter system, larger than the largest lens front and be done with it. Filter are like tripods, the kind of accessory that last longer that cameras and independent from the mount, they are long term investments. Trying to adapt the lens to filters is the wrong way, usually, it makes more sense to adapt the filters to the lenses we own. Yeh, pretty sensible conclusion. I think long term I'll be going down this route, but for now I 'should be' content with a lot of my future photography work, I'll have a 24mm, 50mm and 100mm primes with ND filters compatible on all 3 of those, so I'm seeing this as $200 spent to tie me over a few years.

08-10-2017, 03:20 AM	#15
southlander Site Supporter Join Date: May 2012 Location: Adelaide Photos: Gallery \| Albums Posts: 1,364	All of the M series up to short telephoto are 49mm filter threads so a cheap 49-52mm ring adapter would allow any of these to use 52mm filters. The M 28/3.5 I consider to be a good wide angle lens. And cheap too. The M20/4 is much dearer and, based on my copy, is not that sharp at infinity. It seems sharpest out to mid range. So good for some things but not ideal for landscapes in my view. Fine for sunsets etc where there is not a lot of detail as it does great colours but less suited for fine detail like distant landscapes. Other copies might be better but it is a scarce lens and pricy for what it is so I haven't been inclined to seek out a second copy.

Wide angle Lens for K-1 (ie FF) that takes 52mm ND Filters

Win a Pentax Limited Lens: Raffle Now Live!