28 Apr
2004
28 Apr
'04
8:14 p.m.
Hi deb The 1600 ASA film is history and the quality is flat. Get new film, always use new fresh film and when storing film, keep it in the refrigerator even the freezer is moisture sealed well. Long exposure is anything longer than normal exposure. Anything that can't be done handheld is usually long exposure and for astrophotography the moon is a short exposure (100ASA F8 @ 1/500 to 1/125 sec.). Sky photos can be from a minute up to hours, depends on film and object, sky brightness and alignment. The longer the focal length means usually a slower optical system meaning a longer exposure for an average night sky object. Are we talking deep sky here or planetary/lunar?? Aloha,have fun Rob