Photography development process for glass plate negatives Step one finds a dark room to develop your photos. Then get some glass plate negatives if that the type of photo you want to produce in my case it was. Step 2 you put the glass plate negative on top of some light sensitive paper (shiny side up). Then you change the amount of seconds you want to exposure your picture for and the aperture and you press the button. In my case the aperture was already set, and I exposed my picture for 10 seconds. Step 3 once you’ve exposed the picture to the light you get the light sensitive paper and put it into the developer chemical for about a minute but no longer otherwise your ruin the picture. Step 4 you put the light sensitive paper in the stopper chemical for 5 seconds to stop the photo from developing. Step 5 put your photo in the fixer for about 2 minutes, if you don’t put it in long enough the picture will begin to change and you don’t want that to happen. Step 6 you need to put your picture in a tub of water to clean the chemicals of. If you don’t do this properly the chemicals can damage the picture. Step 7 uses the squeegee to get rid of excess water so the water doesn’t damage the picture. Then you hang it out to dry. Glass plate test stripes First we wanted to test the effect of exposing a glass negative for different time periods with a set aperture so we would know the best exposure time to use to develop the picture. so to do this first we set it to 2 seconds and covered 1/5 of the picture with and book and we exposed the light sensitive paper for 2 seconds. Then we moved the book along and cover 2/5 of the light sensitive paper and exposed it for a further 2 seconds etc. we did this until we exposed the picture for 10 seconds. From this we picked the best exposure time to exposure our picture for with the set aperture we had which were 8. Then we had a go at developing our own picture with our chosen exposure time and set aperture.