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Pentax SMC K 135/2,5 (MM version) or 85/1,8
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PostPosted: Sat Oct 03, 2020 3:33 pm    Post subject: Pentax SMC K 135/2,5 (MM version) or 85/1,8 Reply with quote
I have Color Ultron 85/2,8 and MC Apotelezenitar 135/2,8

Can afford SMC K 135/2,5 (MM version) OR 85/1,8

Any suggestion?

Thank you.


PostPosted: Sat Oct 03, 2020 4:35 pm    Post subject: Reply with quote
85/1.8 It offers a full stop advantage over the 85 you already have. I would snap it up right away if it had a similar price level the 135/2.5 SMC Pentax lenses usually go for.


PostPosted: Sat Oct 03, 2020 4:58 pm    Post subject: Reply with quote
D1N0 wrote:
85/1.8 It offers a full stop advantage over the 85 you already have. I would snap it up right away if it had a similar price level the 135/2.5 SMC Pentax lenses usually go for.


Thank you D1NO

The 85 goes for 250 bucks, and the 135 for 150.

None cheap, high cost

Last edited by papasito on Sat Oct 03, 2020 5:07 pm; edited 2 times in total


PostPosted: Sat Oct 03, 2020 5:04 pm    Post subject: Reply with quote
D1N0 wrote:
85/1.8 It offers a full stop advantage over the 85 you already have. I would snap it up right away if it had a similar price level the 135/2.5 SMC Pentax lenses usually go for.


Note the K-mount SMC Pentax 1:1.8 / 85 6/6 formula is NOT the same as the M42 Super-Multi-Coated Takumar 1:1.8 / 85 which has 5/4 formula!


PostPosted: Sat Oct 03, 2020 5:14 pm    Post subject: Reply with quote
visualopsins wrote:
D1N0 wrote:
85/1.8 It offers a full stop advantage over the 85 you already have. I would snap it up right away if it had a similar price level the 135/2.5 SMC Pentax lenses usually go for.


Note the K-mount SMC Pentax 1:1.8 / 85 6/6 formula is NOT the same as the M42 Super-Multi-Coated Takumar 1:1.8 / 85 which has 5/4 formula!


Thanks for both.

Perhaps can be useful

http://www.klassik-cameras.de/Pentax_Takumar_85mm.html


PostPosted: Sat Oct 03, 2020 5:17 pm    Post subject: Reply with quote
visualopsins wrote:
D1N0 wrote:
85/1.8 It offers a full stop advantage over the 85 you already have. I would snap it up right away if it had a similar price level the 135/2.5 SMC Pentax lenses usually go for.


Note the K-mount SMC Pentax 1:1.8 / 85 6/6 formula is NOT the same as the M42 Super-Multi-Coated Takumar 1:1.8 / 85 which has 5/4 formula!


I think you are mistaken. If you are looking at Pentaxforums. They have lumped in the Auto-Takumar 85mm 1.8 with the S-M-C Takumar 85mm 1.8. The Auto-Takumar is 5/4 and the S-M-C has a 6/6 design like the SMC Pentax version.

$250 is still very cheap though. I would expect to pay at least 350 Euro's for one.


PostPosted: Sat Oct 03, 2020 5:29 pm    Post subject: Reply with quote
papasito wrote:
visualopsins wrote:
D1N0 wrote:
85/1.8 It offers a full stop advantage over the 85 you already have. I would snap it up right away if it had a similar price level the 135/2.5 SMC Pentax lenses usually go for.


Note the K-mount SMC Pentax 1:1.8 / 85 6/6 formula is NOT the same as the M42 Super-Multi-Coated Takumar 1:1.8 / 85 which has 5/4 formula!


Thanks for both.

Perhaps can be useful

http://www.klassik-cameras.de/Pentax_Takumar_85mm.html


Thank you!

D1N0 wrote:
visualopsins wrote:
D1N0 wrote:
85/1.8 It offers a full stop advantage over the 85 you already have. I would snap it up right away if it had a similar price level the 135/2.5 SMC Pentax lenses usually go for.


Note the K-mount SMC Pentax 1:1.8 / 85 6/6 formula is NOT the same as the M42 Super-Multi-Coated Takumar 1:1.8 / 85 which has 5/4 formula!


I think you are mistaken. If you are looking at Pentaxforums. They have lumped in the Auto-Takumar 85mm 1.8 with the S-M-C Takumar 85mm 1.8. The Auto-Takumar is 5/4 and the S-M-C has a 6/6 design like the SMC Pentax version.

$250 is still very cheap though. I would expect to pay at least 350 Euro's for one.


Thank you! Embarassed my mistake interpreting the data...

Last edited by visualopsins on Sat Oct 03, 2020 10:50 pm; edited 1 time in total


PostPosted: Sat Oct 03, 2020 5:44 pm    Post subject: Reply with quote
I took two pics with the mamiya sx/Color Ultron 85/2,8

first, F/5,6. Second, wide open

Wide open it's too soft. At F/5,6 is better


#1


#2


PostPosted: Sat Oct 03, 2020 6:51 pm    Post subject: Reply with quote
Most of the softness is due to the narrow DOF. The in focus bits are sharp but lack a bit of (micro)contrast. Which is generallty a good thing for a portrait lens.


PostPosted: Sat Oct 03, 2020 9:21 pm    Post subject: Reply with quote
There are some K85 images posted on my Ipernity account: http://www.ipernity.com/doc/288579/album/782607


PostPosted: Sat Oct 03, 2020 11:47 pm    Post subject: Reply with quote
D1N0 wrote:
Most of the softness is due to the narrow DOF. The in focus bits are sharp but lack a bit of (micro)contrast. Which is generallty a good thing for a portrait lens.


Than you, very much. Very usefull your detail

Last edited by papasito on Sun Oct 04, 2020 2:48 pm; edited 1 time in total


PostPosted: Sat Oct 03, 2020 11:48 pm    Post subject: Reply with quote
womble wrote:
There are some K85 images posted on my Ipernity account: http://www.ipernity.com/doc/288579/album/782607


Many thanks.

Very nice ones.

Good lens.


PostPosted: Sun Oct 04, 2020 2:24 am    Post subject: Re: Pentax SMC K 135/2,5 (MM version) or 85/1,8 Reply with quote
papasito wrote:
I have Color Ultron 85/2,8 and MC Apotelezenitar 135/2,8

Can afford SMC K 135/2,5 (MM version) OR 85/1,8

Any suggestion?

Thank you.


As you already have a 135mm and an 85mm lens, which focal length do you find yourself using most often?
You could choose that one.
Although I am not sure that you will gain much by choosing the 135mm, barely 1/3 of a stop.
To me, the 1.8/85 adds more to your shooting options and is more than a stop faster than the one you have.
I would choose the 1.8/85 even though it is more expensive.
As far as value for money goes, I am unsure what the market prices are for these lenses.
But if you seldom use a lens, then it is poor value no matter the price.
Tom


PostPosted: Sun Oct 04, 2020 7:09 am    Post subject: Reply with quote
I don't know if you'd really use the Pentax K 135/2.5 if you already have the APO telezenitar, although it's a good lens, and the build quality is very nice.
The Pentax 85/1.8 is really good. I remember taking some comparison shots with it against the Sony FE 85/1.8, and it was very hard to tell the difference, even wide open.


PostPosted: Sun Oct 04, 2020 2:58 pm    Post subject: Re: Pentax SMC K 135/2,5 (MM version) or 85/1,8 Reply with quote
Oldhand wrote:
papasito wrote:
I have Color Ultron 85/2,8 and MC Apotelezenitar 135/2,8

Can afford SMC K 135/2,5 (MM version) OR 85/1,8

Any suggestion?

Thank you.


As you already have a 135mm and an 85mm lens, which focal length do you find yourself using most often?
You could choose that one.
Although I am not sure that you will gain much by choosing the 135mm, barely 1/3 of a stop.
To me, the 1.8/85 adds more to your shooting options and is more than a stop faster than the one you have.
I would choose the 1.8/85 even though it is more expensive.
As far as value for money goes, I am unsure what the market prices are for these lenses.
But if you seldom use a lens, then it is poor value no matter the price.
Tom


Thank you.

I use those FL very rarely.

99% use my normal lens.

But love all the lenses. Thank You Dog


PostPosted: Sun Oct 04, 2020 3:03 pm    Post subject: Reply with quote
caspert79 wrote:
I don't know if you'd really use the Pentax K 135/2.5 if you already have the APO telezenitar, although it's a good lens, and the build quality is very nice.
The Pentax 85/1.8 is really good. I remember taking some comparison shots with it against the Sony FE 85/1.8, and it was very hard to tell the difference, even wide open.


Thank you, Casper79

I used in film times the SMC 135/2,5. Very sharp with strong longitudinal CA

it is said that this lens in K version improved the LoCA


PostPosted: Sun Oct 04, 2020 4:36 pm    Post subject: Reply with quote
papasito wrote:
caspert79 wrote:
I don't know if you'd really use the Pentax K 135/2.5 if you already have the APO telezenitar, although it's a good lens, and the build quality is very nice.
The Pentax 85/1.8 is really good. I remember taking some comparison shots with it against the Sony FE 85/1.8, and it was very hard to tell the difference, even wide open.


Thank you, Casper79

I used in film times the SMC 135/2,5. Very sharp with strong longitudinal CA

it is said that this lens in K version improved the LoCA


I still use it every now and then, and I like it a lot. Mechanically top notch and a joy to use.


PostPosted: Sun Oct 04, 2020 4:52 pm    Post subject: Reply with quote
Which Pentax 1:2.5 / 135 is this thread discussing? There is the SMC Pentax K-mount, 6/6 and the non-SMC Takumar Bayont 4/4. The "MM" designation in OP confuses me -- what is MM please? Thank you!


PostPosted: Sun Oct 04, 2020 5:31 pm    Post subject: Reply with quote
visualopsins wrote:
Which Pentax 1:2.5 / 135 is this thread discussing? There is the SMC Pentax K-mount, 6/6 and the non-SMC Takumar Bayont 4/4. The "MM" designation in OP confuses me -- what is MM please? Thank you!


Here we are talking about the 6/6 version. It has two models, the first w/o "mm" after the FL in the front ring, The second model, with it.


PostPosted: Sun Oct 04, 2020 10:23 pm    Post subject: Reply with quote
I bought one of the unpopular Takumar ( Bayonet ) 135 / 2.5 ( 4-4 ) just a few days ago and I'm very impressed with it - if this is the poor option the better versions must be truly exceptional.

For a £10 lens, and half of that was postage, a perfect, unmarked lens, of this performance was undoubtedly a bargain. I shall certainly be looking for the 6 - 4 ......and wondering if the price difference matches the performance difference?


PostPosted: Sun Oct 04, 2020 11:11 pm    Post subject: Reply with quote
Lloydy wrote:
I bought one of the unpopular Takumar ( Bayonet ) 135 / 2.5 ( 4-4 ) just a few days ago and I'm very impressed with it - if this is the poor option the better versions must be truly exceptional.

For a £10 lens, and half of that was postage, a perfect, unmarked lens, of this performance was undoubtedly a bargain. I shall certainly be looking for the 6 - 4 ......and wondering if the price difference matches the performance difference?


IT's very nice to read the good rendering of the takumar 4/4.

I didn't use it. But in almost all the especialized articles that lens is not so good as the smc K one.

Good oportunity to know and compare them


PostPosted: Mon Oct 05, 2020 12:12 am    Post subject: Reply with quote
Lloydy wrote:
I bought one of the unpopular Takumar ( Bayonet ) 135 / 2.5 ( 4-4 ) just a few days ago and I'm very impressed with it - if this is the poor option the better versions must be truly exceptional.

For a £10 lens, and half of that was postage, a perfect, unmarked lens, of this performance was undoubtedly a bargain. I shall certainly be looking for the 6 - 4 ......and wondering if the price difference matches the performance difference?


How's it compare to the 4/4 formula Tamron 03B we know and like? Smile

The Takumar Bayonet has no SMC, Pentax Forums database says "non-SMC". SMC lenses are well known for flare resistance.


PostPosted: Mon Oct 05, 2020 7:32 am    Post subject: Reply with quote
Lloydy wrote:
I bought one of the unpopular Takumar ( Bayonet ) 135 / 2.5 ( 4-4 ) just a few days ago and I'm very impressed with it - if this is the poor option the better versions must be truly exceptional.

For a £10 lens, and half of that was postage, a perfect, unmarked lens, of this performance was undoubtedly a bargain. I shall certainly be looking for the 6 - 4 ......and wondering if the price difference matches the performance difference?


It is a good lens, not particularly shining, but no big faults, beside some CA.


PostPosted: Mon Oct 05, 2020 8:40 am    Post subject: Reply with quote
The takumar Bayonet has a terrible glow to it when shot wide open in bright sunlight.

F2.5 by The lens profile, on Flickr (this was on aps-c)


PostPosted: Tue Oct 06, 2020 4:07 pm    Post subject: Reply with quote
D1N0 wrote:
The takumar Bayonet has a terrible glow to it when shot wide open in bright sunlight.

F2.5 by The lens profile, on Flickr (this was on aps-c)


I wonder if there were more versions of this lens, because the one I had (for a few days) did not show this trend at all, unless in less contrasting conditions it masked it well
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