Author Topic: ID this ring!  (Read 2552 times)

Intrepid

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ID this ring!
« on: June 17, 2015, 14:39:35 »
Many years ago, I bought these via Sakamoto-san (these aren't available here) from Japan.  The one on the left is hacked for a purpose the other not so much.

Nikonring by Vivek Iyer, on Flickr

I do not have any use for them at all.

Here is a challenge:

1. What are they?

2. What could possibly make the one on the left more useful?

Answer both and they are yours (reimburse me for shipping)!  :)
Vivek Iyer

Erik Lund

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Re: ID this ring!
« Reply #1 on: June 17, 2015, 14:57:48 »
Nikon BR-6 for stopping down lenses like G-type

Cleaning it :)
Erik Lund

Intrepid

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Re: ID this ring!
« Reply #2 on: June 17, 2015, 15:00:24 »
That was fast!  :)
Vivek Iyer

Bruno Schroder

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Re: ID this ring!
« Reply #3 on: June 17, 2015, 15:04:20 »
1: BR-4 and BR-6
2: Repair the broken stop down lever? :)
Bruno Schröder

Intrepid

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Re: ID this ring!
« Reply #4 on: June 17, 2015, 15:05:56 »
1: BR-4 and BR-6
2: Repair the broken stop down lever? :)

Sorry Bruno. 

Erik "cleaned" it  (both BR-6, bought brand new in the box, fwiw).
Vivek Iyer

Bruno Schroder

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Re: ID this ring!
« Reply #5 on: June 17, 2015, 15:32:53 »
I'm sure he'll put them to good use :)
The yellow tip on the left one made me think of a BR-4 though.

Bruno
Bruno Schröder

Intrepid

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Re: ID this ring!
« Reply #6 on: June 17, 2015, 15:36:34 »
My apologies, Bruno. 

Yes, BR-4 (checked the rim to read the ID)!  :)

Both are BR-4 but one has the yellow plastic tab and the other black plastic tab!
Vivek Iyer

Asle Feten

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Re: ID this ring!
« Reply #7 on: June 17, 2015, 16:01:05 »
The difference between BR4 and BR6 is that BR4 has male F-mount and BR6 has 52mm female thread
There is no illusion, it just looks that way.

Bjørn Rørslett

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Re: ID this ring!
« Reply #8 on: June 17, 2015, 16:10:09 »
Plus BR-4 has the overhanging "skirt" that tends to make trouble on AI/AIS-type lenses or modern cameras.

The bayonet mount on the left sample looks to be in a pretty awful state, though. Adding a CPU is just so much more easy using a proper rig for drilling the mounting holes.

Intrepid

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Re: ID this ring!
« Reply #9 on: June 17, 2015, 16:14:45 »
Correct.  The inside of the (male) F mount needed to be ground off to accommodate the wiring flex and it went a bit far.

It made no trouble for me with a D300 and the 14-24/2.8 zoom.
Vivek Iyer

Erik Lund

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Re: ID this ring!
« Reply #10 on: June 17, 2015, 16:27:33 »
It appears that Bruno Schroder was most correct so they should definitely go to him :)

Nice Quiz Vivek! :) Good idea 
Erik Lund

Asle Feten

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Re: ID this ring!
« Reply #11 on: June 17, 2015, 17:13:55 »
Plus BR-4 has the overhanging "skirt" that tends to make trouble on AI/AIS-type lenses or modern cameras.

The pipe for the cable release and the stop down lever also makes it trouble to mount on cameras with overhanging prism or big grip. My BR-4 will not mount on FE because of that. The ring to the left has fixed that. I think that is answear to the second question.
There is no illusion, it just looks that way.

Akira

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Re: ID this ring!
« Reply #12 on: June 17, 2015, 18:01:44 »
Google is your memory bank, rather than your friend.   ;D

http://photo.net/nikon-camera-forum/00BvBX
"The eye is blind if the mind is absent." - Confucius

"Limitation is inspiration." - Akira

Bruno Schroder

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Re: ID this ring!
« Reply #13 on: June 17, 2015, 22:34:17 »
It appears that Bruno Schroder was most correct so they should definitely go to him :)

Nice Quiz Vivek! :) Good idea
Thank you Eric. I would certainly welcome the chipped BR-4 and reimburse shipping.

Bruno
Bruno Schröder

Intrepid

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Re: ID this ring!
« Reply #14 on: June 17, 2015, 22:50:35 »
Bruno, Sent you a PM. :)
Vivek Iyer