Does Mamiya/Sekor 50mm f1.2 really exist?

AdobemanAZ · 05-18-2017, 06:47 PM

Originally posted by Dlanor Sekao

Having shot Mamiya for 3 decades.....I CAN ASSURE YOU......IT DOESNT EXIST !
Mamiya shooters wanting that fast had to use a Auto Chinon Tomioka 55 1.2
This may be in disagreement with a couple members on here....so If Im wrong ....... Show me with a picture of one. ???
I guarantee you.....Its a 1:2 Or its a 55 and not a 50......keep your fingers crossed for the 55 Tomioka.

I just purchased a Mamiya-Sekor E 50mm f1:2 S/N? 21127 for $10 USD at a used record shop in Tempe, Arizona. Looks in good shape. I haven't figured-out the mount type yet. I have attached a photo.Hope it appears. This is my first post, so I'm learning my way around. Regards, Bart

Attached Images

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Adam · 05-18-2017, 06:54 PM

Originally posted by AdobemanAZ

I just purchased a Mamiya-Sekor E 50mm f1:2 S/N? 21127 for $10 USD at a used record shop in Tempe, Arizona. Looks in good shape. I haven't figured-out the mount type yet. I have attached a photo.Hope it appears. This is my first post, so I'm learning my way around. Regards, Bart

Nice! This might definitively dispel the F1.2 myth

K David · 05-19-2017, 11:46 PM - **1 Like**

They were made, but they're really rare.

Some more info with sample photos:
kopi234: auto mamiya/sekor 55mm F1.2

hoanpham · 05-24-2017, 12:28 AM

55mm f1.2 yes, but hardly seen a 50mm f1.2 in m42.

SpecialK · 05-24-2017, 12:46 AM

Originally posted by ducdao

Can someone shed some lights into this?

Thanks!

Can you not have him send a photo of the numbers?

bxf · 05-24-2017, 01:14 AM

Originally posted by SpecialK

Can you not have him send a photo of the numbers?

You are aware that this post was made more than seven years ago, yes?

SpecialK · 05-24-2017, 03:38 AM

Originally posted by bxf

You are aware that this post was made more than seven years ago, yes?

Not until now. Still, a valid request :-)

Na Horuk · 05-24-2017, 04:07 AM - **1 Like**

Originally posted by bxf

You are aware that this post was made more than seven years ago, yes?

I got so invested reading the first posts, and then bam! Its an old, abandoned thread with no closure

K David · 05-24-2017, 04:02 PM

Originally posted by hoanpham

55mm f1.2 yes, but hardly seen a 50mm f1.2 in m42.

That's splitting hairs, really. They're both normal lenses and the difference between a 50mm and 55mm is pretty much inconsequential.

AdobemanAZ · 05-26-2017, 08:54 AM

RE: Does Mamiya/Sekor 50mm f1.2 really exist?

I have attached a photo of a second Mamiya/Sekor 50mm f2 lens that i was able to randomly find in a second-hand store in the Phoenix Arizona area, over the past week. This lens is older (M42 screw mount). I have ordered an adapter so I can use this lens on my Samsung NX1 mirrorless digital camera. I will post test photographs to my photography blog and make a link available at that time.

Regards, Bart

**Baard-Einar** · 05-27-2017, 11:58 AM

Originally posted by AdobemanAZ

RE: Does Mamiya/Sekor 50mm f1.2 really exist?

I have attached a photo of a second Mamiya/Sekor 50mm f2 lens that i was able to randomly find in a second-hand store in the Phoenix Arizona area, over the past week. This lens is older (M42 screw mount). I have ordered an adapter so I can use this lens on my Samsung NX1 mirrorless digital camera. I will post test photographs to my photography blog and make a link available at that time.

Regards, Bart

The lens you're showing is f2, not a f1.2. Just in case.

AdobemanAZ · 05-28-2017, 09:12 AM

Originally posted by Baard-Einar

The lens you're showing is f2, not a f1.2. Just in case.

Baard-Einar: You are correct. Like some others on this post, there is confusion if the original intent of the thread was locating a 1:1.2 or 1:2 lens (?) I posted two different 1:2 lens mounts of the Mamiya/Sekor, but maybe the 50mm 1:1.2 is still a mystery.

chazthebiker · 04-24-2018, 01:33 AM

Originally posted by Dlanor Sekao

Having shot Mamiya for 3 decades.....I CAN ASSURE YOU......IT DOESNT EXIST !
Mamiya shooters wanting that fast had to use a Auto Chinon Tomioka 55 1.2
This may be in disagreement with a couple members on here....so If Im wrong ....... Show me with a picture of one. ???
I guarantee you.....Its a 1:2 Or its a 55 and not a 50......keep your fingers crossed for the 55 Tomioka.

It exists, but is not a Tomioka. Old, old thread, but it does exist. Not on any lens chart either. Likely a prototype.

05-18-2017, 06:54 PM	#17
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,595	Originally posted by AdobemanAZ I just purchased a Mamiya-Sekor E 50mm f1:2 S/N? 21127 for $10 USD at a used record shop in Tempe, Arizona. Looks in good shape. I haven't figured-out the mount type yet. I have attached a photo.Hope it appears. This is my first post, so I'm learning my way around. Regards, Bart Nice! This might definitively dispel the F1.2 myth 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:

05-26-2017, 08:54 AM	#25
AdobemanAZ New Member Join Date: May 2017 Location: Arizona USA Photos: Gallery Posts: 3	RE: Does Mamiya/Sekor 50mm f1.2 really exist? I have attached a photo of a second Mamiya/Sekor 50mm f2 lens that i was able to randomly find in a second-hand store in the Phoenix Arizona area, over the past week. This lens is older (M42 screw mount). I have ordered an adapter so I can use this lens on my Samsung NX1 mirrorless digital camera. I will post test photographs to my photography blog and make a link available at that time. Regards, Bart Attached Images

04-24-2018, 01:33 AM	#28
chazthebiker Junior Member Join Date: Apr 2018 Posts: 41	Auto Mamiya-Sekor 55mm f/1.2 Originally posted by Dlanor Sekao Having shot Mamiya for 3 decades.....I CAN ASSURE YOU......IT DOESNT EXIST ! Mamiya shooters wanting that fast had to use a Auto Chinon Tomioka 55 1.2 This may be in disagreement with a couple members on here....so If Im wrong ....... Show me with a picture of one. ??? I guarantee you.....Its a 1:2 Or its a 55 and not a 50......keep your fingers crossed for the 55 Tomioka. It exists, but is not a Tomioka. Old, old thread, but it does exist. Not on any lens chart either. Likely a prototype.

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05-19-2017, 11:46 PM - 1 Like	#18
K David Veteran Member Join Date: Oct 2012 Location: Colorado Photos: Gallery Posts: 1,437	They were made, but they're really rare. Some more info with sample photos: kopi234: auto mamiya/sekor 55mm F1.2

05-24-2017, 12:28 AM	#19
hoanpham Veteran Member Join Date: Nov 2009 Location: Strand Photos: Gallery \| Albums Posts: 1,366	55mm f1.2 yes, but hardly seen a 50mm f1.2 in m42.

05-24-2017, 12:46 AM	#20
SpecialK Pentaxian Join Date: Dec 2006 Location: So California Photos: Gallery Posts: 16,480	Originally posted by ducdao Can someone shed some lights into this? Thanks! Can you not have him send a photo of the numbers?

05-24-2017, 01:14 AM	#21
bxf Veteran Member Join Date: Jul 2010 Location: Lisbon area Posts: 1,660	Originally posted by SpecialK Can you not have him send a photo of the numbers? You are aware that this post was made more than seven years ago, yes?

05-24-2017, 03:38 AM	#22
SpecialK Pentaxian Join Date: Dec 2006 Location: So California Photos: Gallery Posts: 16,480	Originally posted by bxf You are aware that this post was made more than seven years ago, yes? Not until now. Still, a valid request :-)

05-24-2017, 04:07 AM - 1 Like	#23
Na Horuk Veteran Member Join Date: Feb 2012 Location: Slovenia, probably Photos: Gallery \| Albums Posts: 11,186	Originally posted by bxf You are aware that this post was made more than seven years ago, yes? I got so invested reading the first posts, and then bam! Its an old, abandoned thread with no closure

05-24-2017, 04:02 PM	#24
K David Veteran Member Join Date: Oct 2012 Location: Colorado Photos: Gallery Posts: 1,437	Originally posted by hoanpham 55mm f1.2 yes, but hardly seen a 50mm f1.2 in m42. That's splitting hairs, really. They're both normal lenses and the difference between a 50mm and 55mm is pretty much inconsequential.

05-27-2017, 11:58 AM	#26
Baard-Einar Site Supporter Join Date: Jan 2010 Location: Oslo Photos: Gallery Posts: 964	Originally posted by AdobemanAZ RE: Does Mamiya/Sekor 50mm f1.2 really exist? I have attached a photo of a second Mamiya/Sekor 50mm f2 lens that i was able to randomly find in a second-hand store in the Phoenix Arizona area, over the past week. This lens is older (M42 screw mount). I have ordered an adapter so I can use this lens on my Samsung NX1 mirrorless digital camera. I will post test photographs to my photography blog and make a link available at that time. Regards, Bart The lens you're showing is f2, not a f1.2. Just in case.

05-28-2017, 09:12 AM	#27
AdobemanAZ New Member Join Date: May 2017 Location: Arizona USA Photos: Gallery Posts: 3	Originally posted by Baard-Einar The lens you're showing is f2, not a f1.2. Just in case. Baard-Einar: You are correct. Like some others on this post, there is confusion if the original intent of the thread was locating a 1:1.2 or 1:2 lens (?) I posted two different 1:2 lens mounts of the Mamiya/Sekor, but maybe the 50mm 1:1.2 is still a mystery.