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Brian Pritchard

Member Since 25 Jan 2006
Offline Last Active Mar 17 2017 05:41 AM
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Posts I've Made

In Topic: tri-x 16mm/S8 home processing tips

27 July 2016 - 10:52 AM

Hello David

You can't bleach reversal back to negative, if you bleach it you will end up with clear film.  You should ensure that the film has been correct washed and then store it in cool, dry conditions, the colder the better.  If the film is stored in very cold conditions you should always allow it to warm up before opening the can to avoid condensation.  If possible it is good to rewind the film to the other end regularly, once a year would be good.

Brian


In Topic: Tetenal C-41 kit

17 May 2016 - 03:07 AM

This is part of the C41 kit that is used for processing Kodacolor, Fujicolor, Vista and so on, stills film.  The kit comes as a 1litre or a 5 litre set of solutions.  There are three parts to the developer, two parts to the Bleach-Fix and 1 part to the stabiliser.  Normal processing is at 38 degrees C.  Here is the processing details.

In Topic: 16mm Film Processing: Blue-tone/tint/cyanotype

16 February 2016 - 02:23 PM

Flashing the positive will give a tinted print - that is the whites are coloured and the blacks remain black. Films were sometimes screened using a coloured filter over the projector which gives the same effect.

Toning colours the blacks and the whites remain white.  You achieve toning by printing a black and white negative with coloured light.

A tinted and toned print has coloured highlights and coloured shadows.  There are samples of all three on my website.

 

Brian


In Topic: 16mm Film Processing: Blue-tone/tint/cyanotype

11 February 2016 - 04:19 PM

If you don't want to produce tones and tints chemically the usual way to get tint and tones is to use the method perfected by Noel Desmet of the Royal Belgian Archive.  To get a blue tint you pre-flash the colour positive stock with yellow light and then print the black and white negative onto the pre-flashed stock.  You need to do tests to ensure that the image is neutral. Obviously you can get any colour tint you want by flashing with the opposite colour.

To get a blue tone it is just a question of grading the black and white image to give the colour you want.  Usually you use a Wratten 85 filter of a piece of clear colour negative stock to ensure that you are able to grade the negative to the colour you want.  Again you can do both and end up with a tinted and toned image.  It is just necessary to do tests to ensure that you get the right result.

 

If you just want tints you can use food dyes which are obviously not toxic (hopefully) as are most of the dyes recommended in articles such as you will find on my website

 http://www.brianprit...tman_po_4ed.htm

 

Brian


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rebotnix Technologies

Glidecam

FJS International, LLC

Visual Products

Willys Widgets

Paralinx LLC

Broadcast Solutions Inc

Opal

Ritter Battery

Aerial Filmworks

Tai Audio

CineLab

Metropolis Post

Media Blackout - Custom Cables and AKS

Gamma Ray Digital Inc