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'new' metrogon quesiton - white internal rear parts



 
 
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  #1  
Old July 18th 08, 12:40 PM posted to rec.photo.equipment.large-format
John[_16_]
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Posts: 62
Default 'new' metrogon quesiton - white internal rear parts

Have a later version Metrogon.

Note the picture showing the rear internal and external surfaces that
face the film. The aperture stop and the internal surrounding rear parts
are WHITE.

I have never seen this before. What could the rationale be? Has the
manufacturer (Fuji in this case, I think) have discovered something
counterintuitive but useful?

See pictures he
http://www.digoliardi.net/metro/met1.jpg
http://www.digoliardi.net/metro/met2.jpg
http://www.digoliardi.net/metro/met3.jpg
http://www.digoliardi.net/metro/met4.jpg
  #2  
Old July 18th 08, 06:14 PM posted to rec.photo.equipment.large-format
David Nebenzahl
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Posts: 1,353
Default 'new' metrogon quesiton - white internal rear parts

On 7/18/2008 4:40 AM John spake thus:

Have a later version Metrogon.

Note the picture showing the rear internal and external surfaces that
face the film. The aperture stop and the internal surrounding rear parts
are WHITE.

I have never seen this before. What could the rationale be? Has the
manufacturer (Fuji in this case, I think) have discovered something
counterintuitive but useful?

See pictures he
http://www.digoliardi.net/metro/met1.jpg
http://www.digoliardi.net/metro/met2.jpg
http://www.digoliardi.net/metro/met3.jpg
http://www.digoliardi.net/metro/met4.jpg


Heed the 'Stones song: Paint It Black.


--
"Wikipedia ... it reminds me ... of dogs barking idiotically through
endless nights. It is so bad that a sort of grandeur creeps into it.
It drags itself out of the dark abyss of pish, and crawls insanely up
the topmost pinnacle of posh. It is rumble and bumble. It is flap and
doodle. It is balder and dash."

- With apologies to H. L. Mencken
  #3  
Old July 19th 08, 02:04 AM posted to rec.photo.equipment.large-format
John[_16_]
external usenet poster
 
Posts: 62
Default 'new' metrogon quesiton - white internal rear parts

David Nebenzahl wrote:

Heed the 'Stones song: Paint It Black.


Aren't you curious as to whether there may be a reason they painted it
white? As counter-intuitive as it may seem, I'm sure you have come about
situations where engineering found a reason to go against common sense.
  #4  
Old July 19th 08, 02:20 AM posted to rec.photo.equipment.large-format
Jean-David Beyer
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Posts: 247
Default 'new' metrogon quesiton - white internal rear parts

John wrote:
Have a later version Metrogon.

Note the picture showing the rear internal and external surfaces that
face the film. The aperture stop and the internal surrounding rear parts
are WHITE.

I have never seen this before. What could the rationale be? Has the
manufacturer (Fuji in this case, I think) have discovered something
counterintuitive but useful?

See pictures he
http://www.digoliardi.net/metro/met1.jpg
http://www.digoliardi.net/metro/met2.jpg
http://www.digoliardi.net/metro/met3.jpg
http://www.digoliardi.net/metro/met4.jpg


I definitely do not know, but might it not be to reject heat from the bulb
behind the film so that dimensions do not change from heat?

--
.~. Jean-David Beyer Registered Linux User 85642.
/V\ PGP-Key: 9A2FC99A Registered Machine 241939.
/( )\ Shrewsbury, New Jersey http://counter.li.org
^^-^^ 21:15:01 up 23 days, 6:35, 4 users, load average: 4.01, 4.07, 4.09
  #5  
Old July 19th 08, 02:24 AM posted to rec.photo.equipment.large-format
David Nebenzahl
external usenet poster
 
Posts: 1,353
Default 'new' metrogon quesiton - white internal rear parts

On 7/18/2008 6:04 PM John spake thus:

David Nebenzahl wrote:

Heed the 'Stones song: Paint It Black.


Aren't you curious as to whether there may be a reason they painted it
white? As counter-intuitive as it may seem, I'm sure you have come about
situations where engineering found a reason to go against common sense.


Actually, yes. It does seem counterintuitive, or just plain wrong.
Wonder if it was done for cosmetic (i.e., marketing) reasons. Richard?


--
"Wikipedia ... it reminds me ... of dogs barking idiotically through
endless nights. It is so bad that a sort of grandeur creeps into it.
It drags itself out of the dark abyss of pish, and crawls insanely up
the topmost pinnacle of posh. It is rumble and bumble. It is flap and
doodle. It is balder and dash."

- With apologies to H. L. Mencken
  #6  
Old July 19th 08, 04:16 AM posted to rec.photo.equipment.large-format
Nicholas O. Lindan
external usenet poster
 
Posts: 1,227
Default 'new' metrogon quesiton - white internal rear parts

"John" wrote

I'm sure you have come about situations where engineering found a reason
to go against common sense.


They were drunk...

Going against one's common sense is one of Engineering's
deadly sins -- it is a hard-bitten, flinty and skeptical
profession. Failure is a very public spectacle.

If you are looking at engineering without common sense
then you most likely looking at a physicist parading
as an engineer.

And, as Twain (?) said: "Common sense isn't".

Now, a rational reason why those components would
be painted white is hard to come by:

1) The wrong paint was specified on the engineering
drawing: instead of Paint 1180-3512-11 it called
out 1180-3521-11. The factory made a 100 exactly
to specification, just to show engineering what's
what.

1a) The factory used the wrong paint, as above.
Engineering noticed it, but didn't say anything
until the factory made 100 with white paint,
just to show the factory what's what.

2) A physicist (or mathematician) was involved. Some
relative of Zeno's paradox was invoked to prove
white was the blackest of blacks.

3) Somebody was drunk.

4) **** happens.

If it was really meant to be white ... clutching
at straws ... it's highly visible if the rear cell
hasn't been screwed in and it is designed that way
to prevent screw-ups in the field? See, it's not
a bug, it's a feature - sez marketing.

--
Nicholas O. Lindan, Cleveland, Ohio
Darkroom Automation: F-Stop Timers, Enlarging Meters
http://www.darkroomautomation.com/index2.htm
n o lindan at ix dot netcom dot com


 




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