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08-04-2018, 11:24 AM   #31
Ole
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QuoteOriginally posted by chazthebiker Quote
I've looked at that and I have only seen 37902 with that open aperture metering gear on the mount. I have not seen one without it (open aperture metering). I believe the database is wrong on that account. I think it should state the 37902 supports open aperture metering to be accurate. It seems Ebay is becoming an important research tool.

I don't even like the 50mm focal length, but I am becoming obsessed with the Takumar 50mm f/1.4s. I'd pay good money for a good 37802. Always search for that and a 358 now.
I fixed the database. van Oosten's book also lists the 37902 as having open aperture metering.

08-04-2018, 11:43 AM - 4 Likes   #32
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QuoteOriginally posted by chazthebiker Quote
Ole, I have just found and purchased this 37801 (4333853) on Ebay. The serial number is only 747 before my early 37902 (4334600). Or have I just displayed my ignorance in understanding serial numbers for Takumars? According to the "Takumarology - Takumar Field Guide" (Page 10) there seems to be some overlap in numbers from the 37801 vs 37902. Maybe I should not have bought the 37801? Feeling kinda stupid now.

It seems a member here, Droo (field guide writer) is an expert concerning the 50mm Takumars. Hopefully he will sort this out for us. For the life of me I cannot understand the serial number overlap between models, but it is there.

I'll become a website supporter next month. I can't afford it this month after all this.
You can never have too many 50mm F1.4 lenses! A true Pentaxian has at least five.

PentaxForums' serial number database indicates some overlap in numbers when one looks at the Super-Takumar 50mm F1.4 entries. Perhaps some of the entries with the higher numbers are placed in the wrong section. Or perhaps they are Multi-Coated Super-Takumar lenses like yours!

My (not multi-coated) Super-Takumar lenses are in the low end with serials 1553725, 1648481, and 3142796. My Super-Multi-Coated is up at 5835273.
08-05-2018, 04:06 AM - 1 Like   #33
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Further data points for you:

My Super-Takumar 50/1.4 (thoriated, confirmed with gamma counter) with standard (for Super Tak) aperture, i.e. close-down pin only, is 1875529, lot 37800 on the rear of the M/A switch.

My Super-Multi-Coated Takumar 50/1.4 with open aperture metering gear has the identical "look" (i.e. the metallic, not the rubberized focus ring), is 5530544, and the switch number is 37902.

I also have an FA 50/1.4, but my f/1.2 lens is a Rikenon. I guess I don't quite make the cut as a true Pentaxian!
08-05-2018, 06:02 AM - 1 Like   #34
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QuoteOriginally posted by pathdoc Quote

I also have an FA 50/1.4, but my f/1.2 lens is a Rikenon. I guess I don't quite make the cut as a true Pentaxian!
- not yet, but it will happen !!

08-05-2018, 02:45 PM   #35
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QuoteOriginally posted by Ole Quote
- not yet, but it will happen !!
I'm at 3, but if the latest anomaly I just found is still at the store in the next few days I'll go back by and pick it up. That will put me at 4 and we'll have another strange one to look at.
08-06-2018, 03:58 AM - 1 Like   #36
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QuoteOriginally posted by chazthebiker Quote
I'm at 3, but if the latest anomaly I just found is still at the store in the next few days I'll go back by and pick it up. That will put me at 4 and we'll have another strange one to look at.
At the very least go back right away and take pictures of it!
08-08-2018, 06:49 PM   #37
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QuoteOriginally posted by pathdoc Quote
At the very least go back right away and take pictures of it!
It's another 50mm f/1.4, but the name ring says "Super-Takumar" (37801), but the lens itself is a 37902 that supports open aperture metering. There are two things that make me hesitate: 1. There is some serial number overlap between models 37901 and 37902. This serial number could be from either model. So, somebody could have just taken the ring from a 37801 and placed it on a 37902 lens. The serial number overlap makes that a possibility. That seems unlikely because the store isn't asking much for the lens. A fraud would be asking far more and claiming a reason for a higher price. Right? It could just be that this is one of those transitional lenses and Asahi was using up extra parts. 2. The front element has a small amount of fungus around the edges. Not an insurmountable problem, but it is a problem.

Then even if somebody has the lens, what is to stop anyone from just saying a switch of the front rings took place? That's the problem. There does not seem to be a way to prove the name ring belongs on that particular lens. If there were a way to prove that I'd have already bought it, fungus and all.

Ole, does Mr. Oosten's book specify whether or not the serial number overlap contains particular serial numbers for either/or model? SN4338303 (37801 name ring, but 37902 lens body). What attracted me to this lens is the fact that it is only 1,503 examples away from my 4334600 "if" the name ring actually belongs on the lens.


Last edited by chazthebiker; 08-08-2018 at 07:00 PM.
08-09-2018, 05:19 AM   #38
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van Oosten's book does not list any serial numbers for the lenses in question. What we have is the PentaxForums serial number database, but it doesn't include the product id.

As you indicate, your lens is probably the result of a repair job, that switched out the front ring for reasons unknown.
08-09-2018, 05:19 AM - 1 Like   #39
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van Oosten's book does not list any serial numbers for the lenses in question. What we have is the PentaxForums serial number database, but it doesn't include the product id.

As you indicate, this lens is probably the result of a repair job, that switched out the front ring for reasons unknown.
08-09-2018, 01:45 PM   #40
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QuoteOriginally posted by Ole Quote
You can never have too many 50mm F1.4 lenses! A true Pentaxian has at least five.
I only have four...
But I also have one that can be stopped down to f/1.4. I guess it can be considered the fifth
08-09-2018, 01:59 PM - 1 Like   #41
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Yikes! This means I'm not a true Pentaxian. I only ever had one Takumar 50mm/1.4 (very late version) but I got rid of it because I much prefer the 55mm. I've got two of those.

The only 50mm I own at the moment is my 1947 Kodak Anastigmat 50mm/3.5 that I've converted to K mount. Sharpest 50mm I've ever owned by far, and I'd love to see how that one works on a K-1. If only there was some sort of win a K-1 contest going on. . .
08-09-2018, 08:06 PM   #42
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QuoteOriginally posted by Ole Quote
van Oosten's book does not list any serial numbers for the lenses in question. What we have is the PentaxForums serial number database, but it doesn't include the product id.

As you indicate, this lens is probably the result of a repair job, that switched out the front ring for reasons unknown.
I suspected as much.
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