I have been shooting 8x10 negatives during the night time that have been working perfectly, except in one area. All of my photographs are exposed for over 2.5 h ours and developed using D-23 developer. It works perfect, but when I am close o r within 50ft. of a light or basically street lights and very bright lights near the camera, the light will burn out a portion of the negative when developed. T he other lights come out gr8 and I have no other problem, but is there a filter I can use to prevent this? The lens is open for at least 2.5 hours and that is t he minimum time. PS- If anyone know about platinum printing, what developers are good for dark ph otographs?