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COLOUR SLIDES
Many of the processing methods are the same for slide film as for negatives although there are more steps . The reason for the extra steps is that , part way through the processing sequence , the image must be reversed so that the result is a transparency rather than a negative . Once again , first make sure that the film you are using can be processed in the chemicals ; the standard process is Kodak's E - 6 , which is the example that we use here . Load the film into its tank , mix and prepare the solutions in the same way as described for colour negative films .
There are two developers in this process , one used at the beginning , the other used after the reversal bath . Both need to be used at the same precise temperature as the developer for colour negatives 37.8 ° C ( 100 ° F ) . The tolerances are also very tight : 0.3 ° C ( 0.5 ° F ) for the first developer , 1.1 ° C ( 2 ° F ) for the second developer . The remaining solutions are less demanding , but must be used between 33.5 and 39 ° C ( 92 and 102 ° F ) . Control the temperature in the same way as for colour negatives , but be a little more careful in maintaining the temperature of the bath after you have added the first developer remember that the second developer , a few steps later , must also be at exactly 37.8 ° C ( 100 ° F ) .
Follow the procedures already described for colour negatives , using the table shown here for timings and steps . At the end , as you hang the film up to dry , it will be slightly milky , but this will clear as it dries . Only judge the quality of the results when the film is completely dry . A hair dryer will speed up this part of the process , but be careful not to overheat the film ; do not exceed 50 ° C ( 122 ° F ) to avoid distortion .
Processing KODAK EKTACHROME Films in Process E - 6 For 1 US Pint / 473ml / 16 fl oz Processing Tanks
Includes time required to drain tank ( usually about 10 seconds ) . For initial films through a 1 pint ( 473ml ) set of solutions . See instructions accompanying the kit for Process E - 6 for development times of subsequent films through the same set of solutions .
ABOVE E6 slide films can be used at a higher speed than their recommended rating , as long as the development is extended accordingly . This can be particularly useful to photographers working with transparency film in low light conditions . This shot was push - processed .
PUSH - PROCESSING
You can use E - 6 slide films at a higher speed than their normal rating , provided that you extend the development can be very useful in low - light conditions . Simply treat the film as if it had a higher ISO when you shoot , and make a note on the film cassette to give it extra development . For example , you can use Ektachrome 400 film as if it were ISO 800 and gain an extra stop . To achieve this extra 1 - stop increase , add 2 minutes to the first developer time continue the pattern of agitation for these extra 2 minutes ) . That is all there is to it . For a 2 - stop increase , add 5½ minutes to the first developer . There will be some increase graininess and contrast , and a slight change in colour , but with a 1 - stop increase these are not likely to be great .
When overdeveloping - push processing or underdeveloping- known as ' cutting - perhaps in an attempt to compensate for exposure error or high / low light levels at the time of the shoot , you will not always know by how much to over - or underdevelop . As a test , it is possible to take a short length of film from the beginning of the roll . In the dark , cut off sufficient film to include two or three frames and develop this test clip normally . By ' sacrificing ' the first frames of the roll like this , you can then decide whether to ' push ' - as in the photograph below right - or ' cut'- as in the print bottom right . The main picture , taken with a 400mm telephoto lens ( 1 / 60sec , f16 ) was developed normally . The others were over- and underdeveloped by one stop respectively .
Compare the contrast in the photograph above , developed normally , with that in the examples below ( 400mm , 1 / 60sec , f16 ) .
This photograph has been " pushed ' , or overdeveloped by one stop .
This version has been ' cut ' , or under- developed by one stop .
COLOUR SLIDES
Many of the processing methods are the same for slide film as for negatives although there are more steps . The reason for the extra steps is that , part way through the processing sequence , the image must be reversed so that the result is a transparency rather than a negative . Once again , first make sure that the film you are using can be processed in the chemicals ; the standard process is Kodak's E - 6 , which is the example that we use here . Load the film into its tank , mix and prepare the solutions in the same way as described for colour negative films .
There are two developers in this process , one used at the beginning , the other used after the reversal bath . Both need to be used at the same precise temperature as the developer for colour negatives 37.8 ° C ( 100 ° F ) . The tolerances are also very tight : 0.3 ° C ( 0.5 ° F ) for the first developer , 1.1 ° C ( 2 ° F ) for the second developer . The remaining solutions are less demanding , but must be used between 33.5 and 39 ° C ( 92 and 102 ° F ) . Control the temperature in the same way as for colour negatives , but be a little more careful in maintaining the temperature of the bath after you have added the first developer remember that the second developer , a few steps later , must also be at exactly 37.8 ° C ( 100 ° F ) .
Follow the procedures already described for colour negatives , using the table shown here for timings and steps . At the end , as you hang the film up to dry , it will be slightly milky , but this will clear as it dries . Only judge the quality of the results when the film is completely dry . A hair dryer will speed up this part of the process , but be careful not to overheat the film ; do not exceed 50 ° C ( 122 ° F ) to avoid distortion .
Processing KODAK EKTACHROME Films in Process E - 6 For 1 US Pint / 473ml / 16 fl oz Processing Tanks
Includes time required to drain tank ( usually about 10 seconds ) . For initial films through a 1 pint ( 473ml ) set of solutions . See instructions accompanying the kit for Process E - 6 for development times of subsequent films through the same set of solutions .
ABOVE E6 slide films can be used at a higher speed than their recommended rating , as long as the development is extended accordingly . This can be particularly useful to photographers working with transparency film in low light conditions . This shot was push - processed .
PUSH - PROCESSING
You can use E - 6 slide films at a higher speed than their normal rating , provided that you extend the development can be very useful in low - light conditions . Simply treat the film as if it had a higher ISO when you shoot , and make a note on the film cassette to give it extra development . For example , you can use Ektachrome 400 film as if it were ISO 800 and gain an extra stop . To achieve this extra 1 - stop increase , add 2 minutes to the first developer time continue the pattern of agitation for these extra 2 minutes ) . That is all there is to it . For a 2 - stop increase , add 5½ minutes to the first developer . There will be some increase graininess and contrast , and a slight change in colour , but with a 1 - stop increase these are not likely to be great .
When overdeveloping - push processing or underdeveloping- known as ' cutting - perhaps in an attempt to compensate for exposure error or high / low light levels at the time of the shoot , you will not always know by how much to over - or underdevelop . As a test , it is possible to take a short length of film from the beginning of the roll . In the dark , cut off sufficient film to include two or three frames and develop this test clip normally . By ' sacrificing ' the first frames of the roll like this , you can then decide whether to ' push ' - as in the photograph below right - or ' cut'- as in the print bottom right . The main picture , taken with a 400mm telephoto lens ( 1 / 60sec , f16 ) was developed normally . The others were over- and underdeveloped by one stop respectively .
Compare the contrast in the photograph above , developed normally , with that in the examples below ( 400mm , 1 / 60sec , f16 ) .
This photograph has been " pushed ' , or overdeveloped by one stop .
This version has been ' cut ' , or under- developed by one stop .
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