|
| |
Links to Other Pages |
Let the cursor hover over any of the buttons above and it will display further details.
LINKS: All underlined words and pictures on this site are links. Please click on any of them..
The Wet Collodion Process Thomas Rodger
Below are some extracts from Thomas Rodger's paper
On Collodion Calotype, |
||||
Fix the Image |
||||
The Fixing Solution "When the negative and sensitive sheet of paper underneath have been exposed to the action of the sun's rays long enough to make the copy a shade or two darker than is intended to be when finished, the copy should be immersed as soon as possible into a bath of hyposulphite of soda to prevent the light from exerting any further influence upon it, or as it is termed, to fix it." "The bath is made thus: - - Hyposulphite of soda, 2 ounces. - Water (common), 16 ounces. To render this bath, from the first, capable of giving tints equal to an old bath, there should be added a dram or half a dram of chloride of silver, and 40 drops of chloride of gold solution, of a strength already mentioned." |
||||
Fix for 10 Minutes of 10 hours "Those pictures which were from the first rather faint, will be fixed after ten minutes' immersion; and darker ones may be allowed to remain for as many hours, or until they assume the desired gradation of light and shadow." "The pictures must then be subjected to thorough washing, so as to remove completely all traces of the hyposulphite of soda bath, which will otherwise be pernicious to the permanence of the colours of the photograph. The copies are then dried; and pressed or polished on the back." |
||||
|
The Wet Collodion Process - as described by Thomas Rodger Jun. |
|||||||
|
Links to Other Pages |
Let the cursor hover over any of the buttons above and it will display further details.
LINKS: All underlined words and pictures on this site are links. Please click on any of them..
Links to Other Pages |
Let the cursor hover over any of the buttons above and it will display further details.
LINKS: All underlined words and pictures on this site are links. Please click on any of them..
|