Re: [CBQ] Black Boxcar Theory [1 Attachment]

["milepost206@mchsi.com [CBQ]" <CBQ@yahoogroups.com>]

[Attachment(s) from milepost206@mchsi.com [CBQ] included below]





Okay.

If the herald is only B&W paint do you have thoughts on the distinct tone differences in the herald on both of the cars in the attached image? It appears the large herald box is not the same 'color' as the lettering. I would think if freshly painted, the lettering should be the same tone as the box? And there is also an outline to the herald visible on both cars that is not a scan artifact.

Randy

---In CBQ@yahoogroups.com, <holpennywagner@...> wrote :

There was no bright red in the Burlington Route heralds on freight cars until the late 1950s Chinese red era.  The herald on freight cars was white on a black background until the early 1940s, at which time the black background was eliminated.

Hol

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From: CBQ@yahoogroups.com <CBQ@yahoogroups.com> on behalf of milepost206@... [CBQ] <CBQ@yahoogroups.com>
Sent: Thursday, February 4, 2016 10:01 AM
To: CBQ@yahoogroups.com
Subject: Re: [CBQ] Black Boxcar Theory

 

 

Hi Jerry,

Thanks for posting this movie film ad from 1930. More information is always helpful.

Several online sources reaffirm the 1904-1906 release of panchromatic film stock.

Panchromatic stock for still photographic plates became available commercially in 1906.
https://en.wikipedia.org/wiki/Panchromatic_film

Panchromatic film - Wikipedia, the free encyclopedia

en.wikipedia.org

Panchromatic emulsion is a type of black-and-white photographic emulsion that is sensitive to all wavelengths of visible light. Description. A panchromatic emulsion ...

is one with a footnote reference. Another sorce lists 1904.

I think if this image had been shot with ortho film, the Q herald would not have tone. The bright red should turn black.

Sorry to the daily digest folks for not being able to trim this post. I gave up.

Randy



---In CBQ@yahoogroups.com, <jeralbin@...> wrote :

For those still interested. Also, note the date.

..Regards   Jerry Albin

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 Early Ad for Panchromatic Film

This February 1930 advertisement does a good job of promoting the advantages of panchromatic movie film.

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These Pictures Show the Difference Between PANCHROMATIC Film and Ordinary Film

This picture was made with ordinary film. Note the inaccuracy of the color values as compared with those in the "Pan" picture.

This is a Panchromatic Film picture. Note the fidelity in color value reproduction.

"Pan" Brings Out Color Values Never Before Possible in Black and White Pictures

No need to ask which picture you prefer. The beauty appeal of the picture on the right is instantaneous. The remarkably faithful black and white reproduction of the natural color values is apparent at a glance. This the kind of picture you want. It is the kind that Cine'-Kodak Panchromatic Film gives you. 

Why "Pan" Gives Better Quality Movies The chart below shows the colored light that may be reflected from a subject, and that, after passing through the lens, falls on the film.

Ordinary film is mainly sensitive to violet and blue light only; very slightly sensitive to yellow and green, and practically not at all sensitive to red. Thus, when you take a picture with ordinary film, violet and blue are the only reflected colored lights that make appreciable impressions on the film. Other colors, to which the film is not sensitive, make no impressions, and, therefore, show as black on the screen. 

The results with "Pan" are very different. When you take a picture with "Pan," you get correct color values, in varying shades of gray, for "Pan" is sensitive to all colored light. Not only the violet and blue, but red, green, orange, yellow and all other colored light is correctly recorded. 

The twin pictures tell the story. The one on the left was made with ordinary film. It shows navy blue as a light color. Naturally, you expect to see yellow and red reproduced as lighter shades of gray. But they appear darker than navy blue. 

Now, look at the picture made with "Pan." Note the difference in color value reproduction. Navy blue appears dark; red, a medium gray; yellow, a vivid, light gray. 

That explains Cine'-Kodak Panchromatic Film ... it reproduces, in their correct black and white relationship, all the colors of natural light ... it gives you the utmost in black and white photography. 

Beauty Heretofore Impossible "Pan" opens up a new black and white picture-taking field for your enjoyment. The subtle shadings of skin, hair and eyes in portrait work, the interesting contrasts of foliage in landscape photography, magnificent shadow effects in cloud pictures ... all are yours with "Pan." 

Daylight loading, "Pan" is just as easy to use as regular Cine'-Kodak Film. Except for portraiture, the Cine'-Kodak Color Filter is recommended for general use with Cine'-Kodak Panchromatic Film. In a word, "Pan," like regular Cine'-Kodak Film, gets the picture, but gives it a new realism, a new beauty, a new quality that you will appreciate. 

Cine'-Kodak Panchromatic Film is priced at $7.50 per 100-foot roll, $4.00 per 50-foot roll. The Color Filter for the Cine'-Kodak, Model B, f1.9, is priced at $2.50; for the Model B, f3.5, or f6.5, $1.50. A special Front to accommodate the Color Filter on such f3.5 models as do not have a projecting ring in front of the lens, is priced at $1.00.

Courtesy © Eastman Kodak Company.

	Previous	Spectral Sensitivity Range of Exposure Meters
	Contents	Spectral Selectivity
	Next	Color Filter Absorbtion Density

C1997 by Ed Scott - <dotted.dog@...>

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