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SMC Pentax 150mm f/4 rocks!
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PostPosted: Sun Aug 23, 2020 10:49 am    Post subject: SMC Pentax 150mm f/4 rocks! Reply with quote

Took out this lens, it's a weird focal length but a solid performer!







100% crop (Sony A7Rii) of the above picture. Nice detai and pretty decent CA control :




Hand held shot in the middle of the woods. Changed only color balance afterwards:



PostPosted: Sun Aug 23, 2020 1:08 pm    Post subject: Reply with quote

It looks excellent. I've heard other reports that this is a great lens before, so not surprised.


PostPosted: Sun Aug 23, 2020 1:48 pm    Post subject: Re: SMC Pentax 150mm f/4 rocks! Reply with quote

caspert79 wrote:
Took out this lens, it's a weird focal length but a solid performer!



To me, 135 mm is a weird focal lenght, while 150 is a round 3x standard lens Laughing


PostPosted: Sun Aug 23, 2020 2:07 pm    Post subject: Reply with quote

135 isn't all that wierd, it's 3x the 'normal' view (which is 43.2mm, not 50) if you round up.


PostPosted: Sun Aug 23, 2020 2:19 pm    Post subject: Reply with quote

Strange or not, It is easy to get used to.


PostPosted: Sun Aug 23, 2020 3:44 pm    Post subject: Reply with quote

Very nice portait . Congrats!
I suppose that this lens is a Super Takumar SMC ?


PostPosted: Sun Aug 23, 2020 3:45 pm    Post subject: Reply with quote

https://patents.google.com/patent/US3467462A

The only Asahi lens patent I've been able to find...


PostPosted: Sun Aug 23, 2020 4:01 pm    Post subject: Reply with quote

memetph wrote:
Very nice portait . Congrats!
I suppose that this lens is a Super Takumar SMC ?


No it's the first bayonet series of Pentax 'SMC Pentax 150mm f/4'. There its also a SMC takumar version (M42).


PostPosted: Sun Aug 23, 2020 4:03 pm    Post subject: Reply with quote

visualopsins wrote:
https://patents.google.com/patent/US3467462A

The only Asahi lens patent I've been able to find...


Very interesting, thank you!


PostPosted: Sun Aug 23, 2020 5:08 pm    Post subject: Reply with quote

caspert79 wrote:
memetph wrote:
Very nice portait . Congrats!
I suppose that this lens is a Super Takumar SMC ?


No it's the first bayonet series of Pentax 'SMC Pentax 150mm f/4'. There its also a SMC takumar version (M42).


There are:
M42 Super-Takumar 1:4/150mm Model I with 5/4 formula
M42 Super-Takumar 1:4/150mm Model II with 5/5 formula
M42 Super-Multi-Coated Takumar 1:4/150mm with 5/5 formula
K SMC Pentax

There is no Super Takumar SMC or SMC Takumar version.


Last edited by visualopsins on Sun Aug 23, 2020 8:20 pm; edited 1 time in total


PostPosted: Sun Aug 23, 2020 6:12 pm    Post subject: Reply with quote

iangreenhalgh1 wrote:
135 isn't all that wierd, it's 3x the 'normal' view (which is 43.2mm, not 50) if you round up.


Yes but our bags have always been full of 50 mm, while 43 mm are definitely uncommon; 50, 100, 150, 200, 250... all nicely spaced lenses, but all this matter is totally subjective


PostPosted: Sun Aug 23, 2020 7:33 pm    Post subject: Reply with quote

Yes, it's a good lens. I have the Super-Takumar 105, 135, 150 and 200, and for me personally, I find the 150 is the better one.


PostPosted: Sun Aug 23, 2020 7:40 pm    Post subject: Reply with quote

Ultrapix wrote:
iangreenhalgh1 wrote:
135 isn't all that wierd, it's 3x the 'normal' view (which is 43.2mm, not 50) if you round up.


Yes but our bags have always been full of 50 mm, while 43 mm are definitely uncommon; 50, 100, 150, 200, 250... all nicely spaced lenses, but all this matter is totally subjective


43mm is not uncommon at all, it's just hat they are labelled 45mm usually. A lot of fixed lens cameras had 45mm lenses, the 45mm Xenar and Tessar being the best of thebunch. The Konica Hexanon 1.8/40 and the Minolta MD 2/45 are both 43mm.

50mm isn't a standard either, think of all the 55 and 58mm lenses.

I think it's best to say that anything between 40 and 60mmfor the 35mm format is 'normal'.


PostPosted: Sun Aug 23, 2020 7:52 pm    Post subject: Reply with quote

visualopsins wrote:
caspert79 wrote:
memetph wrote:
Very nice portait . Congrats!
I suppose that this lens is a Super Takumar SMC ?


No it's the first bayonet series of Pentax 'SMC Pentax 150mm f/4'. There its also a SMC takumar version (M42).


There are:
M42 Super-Takumar 1:4/150mm Model I with 5/4 formula
M42 Super-Takumar 1:4/150mm Model II with 5/5 formula
M42 Super-Multi-Coated 1:4/150mm with 5/5 formula
K SMC Pentax

There is no Super Takumar SMC or SMC Takumar version.

Strange.
All M42 are Takumar and when multi-coated they were named Super Multi Coated Takumar or SMC Takumar. I own some....
By the way , I have checked this K version , like many of them, is a Takumar adapted to the K bayonnet .
Optically this the same lens as the Super Takumar which I own and the Super Multi Coated Takumar .


PostPosted: Sun Aug 23, 2020 8:09 pm    Post subject: Reply with quote

memetph wrote:
visualopsins wrote:
caspert79 wrote:
memetph wrote:
Very nice portait . Congrats!
I suppose that this lens is a Super Takumar SMC ?


No it's the first bayonet series of Pentax 'SMC Pentax 150mm f/4'. There its also a SMC takumar version (M42).


There are:
M42 Super-Takumar 1:4/150mm Model I with 5/4 formula
M42 Super-Takumar 1:4/150mm Model II with 5/5 formula
M42 Super-Multi-Coated 1:4/150mm with 5/5 formula
K SMC Pentax

There is no Super Takumar SMC or SMC Takumar version.

Strange.
All M42 are Takumar and when multi-coated they were named Super Multi Coated Takumar or SMC Takumar. I own some....
By the way , I have checked this K version , like many of them, is a Takumar adapted to the K bayonnet .
Optically this the same lens as the Super Takumar which I own and the Super Multi Coated Takumar .


I believe the SMC labeled lenses have a rubberized focus ring and the Super Multi Coated labeled lenses have a steel focusing ring.


PostPosted: Sun Aug 23, 2020 8:12 pm    Post subject: Reply with quote

caspert79 wrote:
memetph wrote:
visualopsins wrote:
caspert79 wrote:
memetph wrote:
Very nice portait . Congrats!
I suppose that this lens is a Super Takumar SMC ?


No it's the first bayonet series of Pentax 'SMC Pentax 150mm f/4'. There its also a SMC takumar version (M42).


There are:
M42 Super-Takumar 1:4/150mm Model I with 5/4 formula
M42 Super-Takumar 1:4/150mm Model II with 5/5 formula
M42 Super-Multi-Coated 1:4/150mm with 5/5 formula
K SMC Pentax

There is no Super Takumar SMC or SMC Takumar version.

Strange.
All M42 are Takumar and when multi-coated they were named Super Multi Coated Takumar or SMC Takumar. I own some....
By the way , I have checked this K version , like many of them, is a Takumar adapted to the K bayonnet .
Optically this the same lens as the Super Takumar which I own and the Super Multi Coated Takumar .


I believe the SMC labeled lenses have a rubberized focus ring and the Super Multi Coated labeled lenses have a steel focusing ring.

Exactly, Super Multi Coated Takumar steel ring and SMC Takumar with a rubberized cover.


PostPosted: Sun Aug 23, 2020 8:30 pm    Post subject: Reply with quote

memetph wrote:
caspert79 wrote:
memetph wrote:
visualopsins wrote:
caspert79 wrote:
memetph wrote:
Very nice portait . Congrats!
I suppose that this lens is a Super Takumar SMC ?


No it's the first bayonet series of Pentax 'SMC Pentax 150mm f/4'. There its also a SMC takumar version (M42).


There are:
M42 Super-Takumar 1:4/150mm Model I with 5/4 formula
M42 Super-Takumar 1:4/150mm Model II with 5/5 formula
M42 Super-Multi-Coated 1:4/150mm with 5/5 formula
K SMC Pentax

There is no Super Takumar SMC or SMC Takumar version.

Strange.
All M42 are Takumar and when multi-coated they were named Super Multi Coated Takumar or SMC Takumar. I own some....
By the way , I have checked this K version , like many of them, is a Takumar adapted to the K bayonnet .
Optically this the same lens as the Super Takumar which I own and the Super Multi Coated Takumar .


I believe the SMC labeled lenses have a rubberized focus ring and the Super Multi Coated labeled lenses have a steel focusing ring.

Exactly, Super Multi Coated Takumar steel ring and SMC Takumar with a rubberized cover.


Correction: M42 Super-Multi-Coated Takumar 1:4/150mm with 5/5 formula

There is no 150mm SMC Takumar, only the M42 Super-Multi-Coated Takumar and the K SMC Pentax. There are no M42 SMC Pentax, only some SMC Takumar, not in every focal length, only 50mm, 55mm, 100mm afaik.


PostPosted: Sun Aug 23, 2020 8:38 pm    Post subject: Reply with quote

visualopsins wrote:
memetph wrote:
caspert79 wrote:
memetph wrote:
visualopsins wrote:
caspert79 wrote:
memetph wrote:
Very nice portait . Congrats!
I suppose that this lens is a Super Takumar SMC ?


No it's the first bayonet series of Pentax 'SMC Pentax 150mm f/4'. There its also a SMC takumar version (M42).


There are:
M42 Super-Takumar 1:4/150mm Model I with 5/4 formula
M42 Super-Takumar 1:4/150mm Model II with 5/5 formula
M42 Super-Multi-Coated 1:4/150mm with 5/5 formula
K SMC Pentax

There is no Super Takumar SMC or SMC Takumar version.

Strange.
All M42 are Takumar and when multi-coated they were named Super Multi Coated Takumar or SMC Takumar. I own some....
By the way , I have checked this K version , like many of them, is a Takumar adapted to the K bayonnet .
Optically this the same lens as the Super Takumar which I own and the Super Multi Coated Takumar .


I believe the SMC labeled lenses have a rubberized focus ring and the Super Multi Coated labeled lenses have a steel focusing ring.

Exactly, Super Multi Coated Takumar steel ring and SMC Takumar with a rubberized cover.


Correction: M42 Super-Multi-Coated Takumar 1:4/150mm with 5/5 formula

There is no 150mm SMC Takumar, only the M42 Super-Multi-Coated Takumar and the K SMC Pentax. There are no M42 SMC Pentax, only some SMC Takumar, not in every focal length, only 50mm, 55mm, 100mm afaik.

You can imagine that my question was not about the focus ring of this Takumar ......


PostPosted: Mon Aug 24, 2020 12:04 am    Post subject: Reply with quote

My Super-Takumar has 43741 on the a/m switch so it must be model II


PostPosted: Mon Aug 24, 2020 7:28 am    Post subject: Reply with quote

D1N0 wrote:
My Super-Takumar has 43741 on the a/m switch so it must be model II


By the way , this page from Pentax forum says that version I and II have the same optic 5/5 .
Is it wrong? I found only informations about a 5/5 scheme on internet.
https://www.pentaxforums.com/lensreviews/S-M-C-Super-Takumar-150mm-F4.html


PostPosted: Mon Aug 24, 2020 8:36 am    Post subject: Reply with quote

visualopsins wrote:

There are:
M42 Super-Takumar 1:4/150mm Model I with 5/4 formula
M42 Super-Takumar 1:4/150mm Model II with 5/5 formula
M42 Super-Multi-Coated Takumar 1:4/150mm with 5/5 formula
K SMC Pentax



Good info Like 1 small . I hadn't realised the formula had changed.


PostPosted: Mon Aug 24, 2020 11:02 am    Post subject: Reply with quote

Early ST, late ST, and S-M-C, no SMC
https://www.pentaxforums.com/lensreviews/S-M-C-Super-Takumar-150mm-F4.html

K
https://www.pentaxforums.com/lensreviews/SMC-Pentax-K-150mm-F4-Lens.html

Looks to be the same optics, but it's possible they have refined the formula with every generation at least I would assume so, even just asking the Enginerds if they learned anything since it was designed.


PostPosted: Mon Aug 24, 2020 11:58 am    Post subject: Reply with quote

memetph wrote:
D1N0 wrote:
My Super-Takumar has 43741 on the a/m switch so it must be model II


By the way , this page from Pentax forum says that version I and II have the same optic 5/5 .
Is it wrong? I found only informations about a 5/5 scheme on internet.
https://www.pentaxforums.com/lensreviews/S-M-C-Super-Takumar-150mm-F4.html

I think visualopsins has his info from Gerjan Oosten's book. The info on Pentaxforums isn't perfect as it is community generated.


PostPosted: Mon Aug 24, 2020 7:22 pm    Post subject: Reply with quote

It is (like most pentax lenses from the era) an excellent lens.


PostPosted: Mon Aug 24, 2020 7:51 pm    Post subject: Reply with quote

D1N0 wrote:
My Super-Takumar has 43741 on the a/m switch so it must be model II


If the switch labels are auto/man not a/m, then yes a model II.

Gerjan lists that number also for later model I, and, early model II had a/m switch labels.