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RE Auto Topcor serial number and name ring description
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PostPosted: Tue Jun 24, 2014 3:46 am    Post subject: Reply with quote
tao wrote:
F series lenses were Topcon "automatic-diaphragm" answer to the similar system from Zunow, Canon and Minolta. They can be easily identified by the distinctive clear depth-of-field window. The lenses, introduced with Topcon RII/Beseler C, were produced for only a short period of time before being replaced by the now famous RE Auto Topcors. Yes they are supposed to be good.

I do now know what the H stands for.

Probably, H stands for HITACHI as those lens are order by HITACHI along with the Topcon RS camera. See the bottom of this link http://www003.upp.so-net.ne.jp/Topconclub/lens4.htm .


PostPosted: Wed Jun 25, 2014 3:58 am    Post subject: Reply with quote
Thanks Calvin. Looks like these H-F lenses are quite scarce!


PostPosted: Sat Sep 06, 2014 9:01 pm    Post subject: Questions regarding RE,Auto-Topcor 1:3,5 f=2.5cm Reply with quote
Hi, I have just acquired a RE,Auto-Topcor 1:3,5 f=2.5cm Tokyo Kogaku Japan 9367055 in Silver.
I have read many places that it should have a filter size of 62mm, but I cant get any om my 62 size hood on?
It is as if it the hood is a little too big.

The filter ring looks unharmed.

Is there others who have experience with that there should be a version with a different filter size?

KR


PostPosted: Sun Sep 07, 2014 1:52 am    Post subject: Re: Questions regarding RE,Auto-Topcor 1:3,5 f=2.5cm Reply with quote
A&R also stated that the lens took 62mm filters but I believed it was wrong. The lens uses 62mm push-on rubber caps but not 62mm filters. My copy does not even have filter threads.

If you need to use filters you will have to look for the original rear-mount filters. There were 10 of them. If you have the leather case, check under the lid first.


metalhund wrote:
Hi, I have just acquired a RE,Auto-Topcor 1:3,5 f=2.5cm Tokyo Kogaku Japan 9367055 in Silver.
I have read many places that it should have a filter size of 62mm, but I cant get any om my 62 size hood on?
It is as if it the hood is a little too big.

The filter ring looks unharmed.

Is there others who have experience with that there should be a version with a different filter size?

KR


PostPosted: Mon Sep 08, 2014 9:29 am    Post subject: Reply with quote
It takes rear mounted filters as Tao said, it usually comes with a UV fitted as standard on the rear, have a look.

If you need a hood, check ebay for the Topcor Series 9 clamp on hood/filter holder. The same one fits both the 25mm and the 20mm though will be named for each lens, it`s identical.

Don`t pay over the odds though some folk are looking for ridiculous money for these hood/filter holders. The 25mm has no filter screw at the front so requires this or a home made system.


PostPosted: Mon Sep 08, 2014 9:31 pm    Post subject: Reply with quote
Thank you, both.
I am looking only for a hood since it looks like that is very much needed.
I go look for the Topcor Series 9 clamp on hood.

You are right about the UV filter. Is it normal to keep it on or do people have some experience with taking it of?
I usually do not use UV filter.

Very good lens otherwise, just not with the sun right on Smile


PostPosted: Tue Sep 09, 2014 9:41 pm    Post subject: Reply with quote
I`m not a big user of filters either but I left mine on for a while and looking back can see no image impairment using it. I imagine the filters were/are as good quality as the lenses themselves.I`ve also got a pack of the original filters now but have never got round to trying them out yet.


PostPosted: Wed Sep 10, 2014 5:17 pm    Post subject: Reply with quote
I have never seen the manual for this lens so I cannot say for sure. However for most lenses with rear filter, a filter is required as a part of the optical design. That said, I see no differences between with and without a UV filter on my m4/3.

With Zenitar 16/2.8 on m4/3, interestingly, I cannot get sharp images at any apertures with a filter in place. With no filters, the lens is nice and sharp. So I guess the lens' exit pupil is so close to the sensor plane that the effect of m4/3's thick sensor stack kicks in. Or probably I have a lemon.


PostPosted: Thu Sep 18, 2014 1:01 am    Post subject: Reply with quote
I have a black 100/2.8 with infinity lock and no red "N".

S/N: 7510203


PostPosted: Fri Sep 19, 2014 4:41 pm    Post subject: Reply with quote
dw1313 wrote:
I have a black 100/2.8 with infinity lock and no red "N".

S/N: 7510203


Thank you. Updated. It started to look like maybe all the black 100/2.8 has infinity lock...


PostPosted: Sun Sep 21, 2014 7:10 am    Post subject: Re: RE Auto Topcor serial number and name ring description Reply with quote
tao wrote:

V3
RE AUTO TOPCOR 1:3.5 f=135mm TOKYO KOGAKU 763xxxx
Black
First known: 7630001 [probably wrong, all early lenses I've seen had the left-most zero omitted.]
Last known: 7632506 {member Tao}
==============================================


another black topcor 135/3.5,the s/n is 7633276!

[img]


PostPosted: Wed Sep 24, 2014 3:41 pm    Post subject: Re: RE Auto Topcor serial number and name ring description Reply with quote
ysyyu wrote:
another black topcor 135/3.5,the s/n is 7633276!


Nice catch! Thanks for sharing.


PostPosted: Tue Sep 30, 2014 6:22 pm    Post subject: Reply with quote
Quote:
87-205/4.7 (Topcon Code 130B)

V4
RE ZOOM AUTO TOPCOR 1:4.7 f=87~205mm 10xxx
Black with no tripod mount
First known: 1xxxx
Last known: 10906

There is a NAVY variation of V4 here with SN 10109 Click here to see on Ebay .


PostPosted: Wed Oct 08, 2014 3:12 am    Post subject: Reply with quote
Thanks Cavin!


PostPosted: Mon Oct 27, 2014 4:09 pm    Post subject: Reply with quote
If you're still keeping track, I recently acquired a silver 135/3.5 with s/n 7623988


PostPosted: Wed Oct 29, 2014 4:43 pm    Post subject: Reply with quote
frenched wrote:
If you're still keeping track, I recently acquired a silver 135/3.5 with s/n 7623988


Congratulations an thanks for sharing. Very Happy


PostPosted: Sun Nov 02, 2014 6:23 pm    Post subject: Reply with quote
tao wrote:
frenched wrote:
If you're still keeping track, I recently acquired a silver 135/3.5 with s/n 7623988


Congratulations an thanks for sharing. Very Happy


another TOPCOR MACRO 135/4 from ebay is 1132046.
[img]
[/img]


PostPosted: Tue Nov 04, 2014 9:10 am    Post subject: Reply with quote
ysyyu wrote:
another TOPCOR MACRO 135/4 from ebay is 1132046.


Okay now the known population of the 135/4 doubles in an instance. I wonder why no one has noticed any samples from the 1000-2000 range before. I actually have seen quite a few of this lens and all has serial number <1000.


PostPosted: Fri Dec 05, 2014 4:12 pm    Post subject: Reply with quote
Quote:
135/3.5 (Topcon Code 76B)
[A&R always incorrectly referred to this lens as a 2.8]

V1
RE,Auto-Topcor 1:3,5 f=13,5cm Tokyo Kogaku Japan 76xxxxx
Silver
First known: 7600001
Last known: 7619616 {eBay 171040425775}

Here is a black variant of V1 with SN 7610268 Click here to see on Ebay .


PostPosted: Tue Dec 09, 2014 5:04 pm    Post subject: Reply with quote
calvin83 wrote:
Here is a black variant of V1 with SN 7610268 Click here to see on Ebay .


Now this is an anomaly. The serial number is so early on that at first I tought it's a V3 with a V1 name ring. However upon closer look, nothing seems to be right. The real V3 has orange feet scale with only a single infinity symbol for both feet and meter. This guy has white feet scale with two infinity symbols, similar to the F-series 13.5cm. However the F distance scale doesn't have feet/meter units since the units were screened on its distinctive clear plastic windows. The all black dual rubber grip is similar to V3 but the hood is clearly from the F. Nice catch indeed Calvin.


PostPosted: Tue Dec 09, 2014 5:48 pm    Post subject: Reply with quote
tao wrote:
calvin83 wrote:
Here is a black variant of V1 with SN 7610268 Click here to see on Ebay .


Now this is an anomaly. The serial number is so early on that at first I tought it's a V3 with a V1 name ring. However upon closer look, nothing seems to be right. The real V3 has orange feet scale with only a single infinity symbol for both feet and meter. This guy has white feet scale with two infinity symbols, similar to the F-series 13.5cm. However the F distance scale doesn't have feet/meter units since the units were screened on its distinctive clear plastic windows. The all black dual rubber grip is similar to V3 but the hood is clearly from the F. Nice catch indeed Calvin.

Thanks for mention all the details. I can only notice the chrome strips on the hood which is not found on V3. Embarassed


PostPosted: Tue Dec 09, 2014 6:32 pm    Post subject: Reply with quote
Don't get me wrong. I do think this is an interesting discovery of a potentially very unique and collectible lens. I hope someone on this board would get the lens and report back whether it is a genuine transition product. Yes there is a chance that it could be a cleverly crafted Frankenstein but I don't think that is very likely.


PostPosted: Tue Dec 09, 2014 6:52 pm    Post subject: Reply with quote
My gut feeling as a collector tells me this is a genuine copy.

P.S. I have send an mail asking for a photo showing the lens mount.


PostPosted: Tue Dec 09, 2014 9:22 pm    Post subject: Reply with quote
Never seen such: Click here to see on Ebay f2 (!!) 13.5cm Topcon R. Topcor 13.5cm


PostPosted: Wed Dec 10, 2014 4:39 pm    Post subject: Reply with quote
Yes Topcon did aim high with the R series. The super fast 13.5cm/2 was one of the first in the series. Another notable fast lens was the Big Bertha 30cm/2.8 which was supposed to be as magnificent as its Howitzer namesake.
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