Chris Walker Wrote:
-------------------------------------------------------
> Fortunately I am colourblind,* so I can't possibly
> comment, let alone tell the difference in a B&W
> picture
. . .
>
> {four pics posted}
>
> * colourblind only when it comes to this arguement
> and not when driving trains in the past.
Dennis Tebo Wrote:
-------------------------------------------------------
>
From AwPinales:
>
> "Argue all you want about it not being factual,
> but it is very obvious in photographs, even though
> they are B&W."
>
> Others have also claimed that 'seeing' different
> shades of grey proves the color must be some-
> thing other than black.
>
> I'm not saying that they are not green, but it is
> not 'obvious' in photographs.
>
> Case in point, are the tops halves of the cylinder
> jacket painted a different color than the bottom
> half?
> What about the air tank?
> Are the tops of the walkways painted a different
> color than the vertical part?
:
:
> There are many other locations on the loco where
> you can see a different shade, but we know from
> common knowledge both surfaces are painted black.
> In some cases the surface is in the shade and
> appears darker, for instance the vertical part of
> the walkway and in other cases its the sheen of
> the paint that will change the appearance. Soot
> also plays a big part since it will give a painted
> surface a 'flat' sheen, i.e., no longer reflective
> and this will make it look a lot light in 'color'.
> This is probably the case for the roof.
>
> This is not to take a way from the work that the
> CRRM has done, but to illustrate that a b/w photo
> alone does not prove the existence of a color.
> Others with far more knowledge of b/w photography
> than myself also claim you cannot tell color from
> a b/w photo.
>
> The crops were taken from the first photo Chris
> posted above.
Hello again -
IIRC, those photos have been posted before. The first one, of #490, is from the late 1930's, and it appears that #490 has recently undergone a major shopping and has been repainted according to the 1937 standards posted by Jeff Berrier at the top of this thread. The aluminum on the cylinder covers, beading on the spot plate, etc., etc., all match that spec, and the lighter shade of grey on the vertical part of the jacket just in front of the cab – as compared to the darker shade of the vertical side of the cab itself – would seem to confirm the use of the specified 'dark olive green' jacket enamel. The second photo has been discussed several times, both above and elsewhere
; the version of it posted immediately above seems darker & less contrasty to my tired old eyes. There's a lot of glare or reflection in the third photo, so it's not clear whether any differences in lighting might be due to the underlying colors. The fourth photo, of the K-27, appears to show a different situation from the photos of #490 & #497 – she appears to have been in use and there is clearly soot settled on the jacket, more heavily toward the rear than the front, so it's not clear whether the lighter shade compared to the vertical sides of the domes is due to a lighter (olive green?) jacket or just to the soot.
The cropped sections of the photos compare areas where the angles are different and/or changing because of rounding, so of course the light is reflected differently and appears as lighter or darker shades of grey. What's important, especially in the photo of #497 posted by Jeff and of #490 posted by Chris, is to compare areas that are AT THE SAME ANGLE TO THE SUN. In particular, as noted above, look at the lighter shade of grey on the VERTICAL parts of the jackets just in front of the cabs as compared to the darker shade of the VERTICAL sides of the cabs themselves in both photos, which IMHO confirms the use of the specified 'dark olive green' enamel on the jackets since they are lighter than the black enamel on the cabs at the same angle.
BTW, soot plays no part in the difference in shade between the cab side and the jacket in the photo of "brand-new" #497 sitting on the flat car – she doesn't even have her wheels yet
. . .
- Sincerely,
Willie (Wm. Claude Johnson-Barr III, Esq.)
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Edited 1 time(s). Last edit at 09/20/2017 07:55PM by Johnson Barr.