Photogenic drawing

• Photogenic drawings are similar to anthotypes in that we use photo sensitive materials applied to various papers to create an image using sunlight.
• In this case we us various coats and mixtures of two main ingredients: silver nitrate and sodium chloride. 
• In this experiment we chose 4 different kinds of paper and three different formulas for applying silver nitrate and sodium chloride. 
• 4 papers: 185g water color, 50g paper, rag 100%, 300g. paper. 
• Set up in a grid, our columns were the 4 sets of paper, and our rows were the 4 kinds of mixes of the chemicals.
• Row 1: 1 coat of 2% NaCl, 2 coats of 12% silver nitrate. Row 2: 2 coats of 5% NaCl and 1 coat of 5% silver nitrate. Row 3: 1 coat 5% NaCl and 2 coats 12% silver nitrate. Row 4:2 coats of 2% NaCl and 2 coats of 12% silver nitrate. 
• Each piece of paper is dried inbetween each coat. The coats are applied in dim lit room as to not pre expose them. After each piece of paper is ready, we then take individual objects, place them over each sheet and expose them to direct sunlight for about 7 minutes.
• The initial idea of the variations of each row was to have a formula that was weak, medium and strong in terms of how much salt was used on each kind of paper. We also were curious to find whether or not the strength of the silver nitrate would have a affect on various papers. 
• Above are images of our finished images that came out the best in the experiment. these images show that the lighter amounts of salt (2%) with a double coat of 12% silver nitrate will yield the best results and show this on 3 of the 4 papers excluding the 300g paper.