Archived posting to the Leica Users Group, 2018/06/20

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Subject: [Leica] Developing E-4 Ektachrome at home
From: hlritter at (Howard L Ritter Jr)
Date: Wed, 20 Jun 2018 18:05:31 -0400
References: <> <MMXP12301MB15020C6CD0350D6B4949577BF9770@MMXP12301MB1502.GBRP123.PROD.OUTLOOK.COM> <> <> <000001d408d8$d04a10a0$70de31e0$@ca>

Thanks, Dr Ted! That?s something I?d never considered. Fortunately, 
background radiation at sea level is mostly due to alpha and beta particles, 
which would not penetrate a camera body.

Hoping to get lucky with someone who?s done what I want to do.

Best wishes,

> On Jun 20, 2018, at 16:53, Ted Grant via LUG <lug at> 
> wrote:
> The only thing I can add to this is?
> Depending how old the film is will depend if you have any images at all? 
> Even depending on your processing? WHY? 
> Simply depending on the radiation factor of planet Earth and time the film 
> was exposed until today? The radiation can or might have destroyed your 
> images.
> Many photogs have no idea about Planet Earths' radiation factor and it's 
> effect on long time exposure to it. Yep it's there 24 hours a day and we? 
> YES US the shooters with cameras and film are subjected to it daily!!
> I suppose as I have been told you can give it a try? however others have 
> offered in processing? MAYBE YOU'LL GET LUCKY????"
> good luck!!!!!!!!!!!!!!
> cheers,
> Dr.Ted Grant O.C.
> -----Original Message-----
> From: LUG [ at] On 
> Behalf Of Don Dory via LUG
> Sent: June-20-18 8:47 AM
> To: Leica Users Group
> Cc: Don Dory
> Subject: Re: [Leica] Developing E-4 Ektachrome at home
> My suggestion would be to use an extreme compensating developer say Rodinal
> 1/100 with no agitation.  Memory tells me that the chromes have extreme
> contrast that needs to be moderated.  Also, after all this time latent
> images will be weak and lots of fog.
> On Wed, Jun 20, 2018, 10:43 AM Howard L Ritter Jr <hlritter at> 
> wrote:
>> I?ve read that E-4 and E-6 processes are very different, and that E-4 film
>> will be ruined by E-6 processing. For one thing, E-4 film needs a
>> pre-hardening step that E-6 doesn?t employ, to keep the emulsion from
>> detaching from the film base. I think this might be the main obstruction 
>> to
>> home processing.
>> It?s been surprisingly unfruitful to google this topic.
>> ?howard
>>> On Jun 20, 2018, at 07:48, John McMaster <john at> wrote:
>>> AFAIR, E4 was lower temperature than E6 - many decades since I shot
>> Kodak colour IR ;-)
>>> john
>>> -----Original Message-----
>>> From: LUG [ at] On
>> Behalf Of Montie via LUG
>>> Sent: 20 June 2018 08:23
>>> To: lug at
>>> Cc: Montie
>>> Subject: Re: [Leica] Developing E-4 Ektachrome at home
>>> If it were me, I'd be shopping around for a single shot E-6 kit
>> (Formulary, B&H, etc.) There may be some still around. I'm thinkin E-4 
>> film
>> will render a usable image (if properly exposed) processed in E-6.
>>> Could be wrong, again, it's been decades...But something to check on. ;-/
>>> Montie
>>>>> Does anyone know anything about home processing of E-4 Ektachrome as a
>> B&W negative?
>>> My brother just came across Dad?s old View-Master stereo camera, opened
>> the back, and discovered that it had a partially exposed roll of film in
>> it. He sent the camera to me and I figured out how to rewind the film.
>> (Thank you, Mike Butkus at Orphan Cameras, 
>> <>)
>> When I took it out, I found that it?s process E-4 Ektachrome, which I was
>> told was marketed from 1963-74. I suspect the film was shot toward the
>> early part of that period. I?d like to see what images of me and my sibs
>> might be on it.
>>> It can be processed at some expense by several commercial labs, but
>> they?ll develop it as a B&W negative. I?d think this could be done at 
>> home,
>> since it?s the color and the reversal that take the exotic chemicals and
>> the technique, correct? I know there?s a caveat about the need for
>> hardening of the emulsion of E-4 film prior to processing, so this might
>> make it impossible to do at home.
>>> Any instructions, experiences, or guidance appreciated.
>>> BTW, I?m running a roll of Ilford Delta 100, the highest ASA the camera
>> is calibrated for ? and it goes down to ASA 4, for original Kodachrome! ?
>> through it now. It might yield some interesting images for those who can
>> fuse stereo pairs by staring at them onscreen. If so, I?ll post them.
>>> (This camera has an innovative system with linked ASA, shutter speed,
>> and aperture dials, calibrated for subject brightness and for illumination
>> level ? and even for summer or winter! ? obviating the need for a light
>> meter. As I recall, it was quite effective even with the slide film that 
>> it
>> had to use. It had fixed-focus lenses and a viewfinder that incorporated a
>> spirit level below the field of view, as leveling is critical for a stereo
>> camera. A flash attachment with its own built-in split-image rangefinder
>> for determining the correct aperture setting was available. Because the
>> stereo effect was more pronounced the closer the subject, two degrees of
>> close-up lenses were available, going down to 20". Conceptually and
>> mechanically, it?s a fascinating camera and system.)
>>> ?howard
>>> _______________________________________________
>>> Leica Users Group.
>>> See for more information
>>> _______________________________________________
>>> Leica Users Group.
>>> See for more information
>> _______________________________________________
>> Leica Users Group.
>> See for more information
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In reply to: Message from montoid at (Montie) ([Leica] Developing E-4 Ektachrome at home)
Message from john at (John McMaster) ([Leica] Developing E-4 Ektachrome at home)
Message from hlritter at (Howard L Ritter Jr) ([Leica] Developing E-4 Ektachrome at home)
Message from don.dory at (Don Dory) ([Leica] Developing E-4 Ektachrome at home)
Message from tedgrant at (Ted Grant) ([Leica] Developing E-4 Ektachrome at home)