[ARC5] WW II Aircraft factory pictures

[J. Forster]

Kodachrome was Kodak, and possibly a couple of private labs.
Ektachrome was E-4 and later E-6

Kodacolor was C-22(?) then C-41  (Negative film)

-John

=================



> My memory of Kodachrome says that Kodachrome was only processed by Kodak
> labs?
>
> I have been using Exctachrome for slides for may years. Still have 6 rolls
> in the fridge.
>
> Bob Macklin
> K5MYJ
> Seattle, Wa.
> "Real Radios Glow In The Dark"
> ----- Original Message -----
> From: "Richard Knoppow" <1oldlens1 at ix.netcom.com>
> To: <jfor at quikus.com>; "Christopher Bowne" <aj1g at sbcglobal.net>
> Cc: <arc5 at mailman.qth.net>; "Clare Owens" <clare.owens at gmail.com>
> Sent: Sunday, February 17, 2013 9:40 AM
> Subject: Re: [ARC5] WW II Aircraft factory pictures
>
>
>>
>> ----- Original Message -----
>> From: "J. Forster" <jfor at quikus.com>
>> To: "Christopher Bowne" <aj1g at sbcglobal.net>
>> Cc: <arc5 at mailman.qth.net>; "Clare Owens" <clare.owens at gmail.com>
>> Sent: Sunday, February 17, 2013 8:57 AM
>> Subject: Re: [ARC5] WW II Aircraft factory pictures
>>
>>
>>> That's why the demise of Kodachrome was so lamented. It was a far more
>>> stable process than the Kodacolor (C-41) process, used in the 'drug
>>> store'
>>> labs for 30 odd years.
>>>
>>> -John
>>
>>     There was  more: Partly it was the color rendition of Kodachrome and
>> partly the nearly grainless images.
>>     All multiple layer color films are very complex but Kodacrome got
>> around a problem by putting some of the complexity into the processing
>> steps.  Kodacrhome requires four development steps while color negative
>> film requires only one and modern color reversal film requires two.  At
>> about the same time as Kodachrome was released to the public as 16mm
>> motion picture film (1935) AGFA in Germany was able to produce a
>> "modern"
>> type of color film. However it was never made available to the American
>> market.  Quite a lot of this film has survived. This is all rather off
>> topic here but those interested in the history of color films can find
>> quite a lot on the web.
>>     The demise of Kodachrome was only partly due to the general swing
>> from
>> chemical photography to digital or electronic photography; Kodak had
>> been
>> trying to kill it off for years due to its difficult processing.
>> Photographers who shoot stock photos particularly miss it due to its
>> excellent archival properties.
>>     There was a difference in the method AGFA and Kodak used in
>> "sequestering" the dye intermediates used in Agfacolor and Kodacolor
>> (not
>> needed in Kodachrome). Both methods were used for decades but it appears
>> that the AGFA method is the one currently used.
>>
>>
>> --
>> Richard Knoppow
>> Los Angeles
>> WB6KBL
>> dickburk at ix.netcom.com
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>
>