RE: [pinhole-discussion] help with indoor exposures needed
Hi Sarah I'd say much the same as Chuck. Do some experimenting and it's remarkably easy to begin to get consistent indoor exposures, especialy if you stick to the same camera and film combination for a while. After a while, you'll just know the light. Using a Zero 2000, for example, and T-Max 100 film, I have found that about 2 seconds works in full sunlight, and anywhere from 8-30 seconds in various depths of outdoor shadow (and up to about 3 minutes as dark approaches). Indoors, I find that a very brightly lit shop or office (a whole ceiling of fluorescents, for example) requires six to 12 minutes. A bright average interior requires about 30 minutes at least, but my rule of thumb indoor exposure for this camera/film combination is 45 minutes unless the room is VERY brightly lit. Give it a try. Remember, in low light situations, chancing of under exposing are much greater than the chances of overexposing. If in doubt, give it more time. Hope that helps. Colin __ Do You Yahoo!? Yahoo! Tax Center - online filing with TurboTax http://taxes.yahoo.com/
Re: [pinhole-discussion] help with indoor exposures needed
Hi Sarah, Do you know the difference in f-stops between the outdoor and indoor light? This can give a good starting point for indoor exposure. You can usually figure this out with a hand-held light meter using the exposure value (EV) scale. As an example, I have a camera that takes 100 seconds for an exposure in bright sunlight (EV 16). I've make several exposures inside office buildings where the light was seven stops less (EV 9) than bright sun. So, double the exposure for each stop. You can work this out in your head like this: 2, 4, 8, 16, 32, 64, 128 times as long. 100 times 128 indicated an exposure of 12800 seconds. This worked out to be a 4-hour exposure (and this is where paper or a calculator came in handy). It worked! This camera used large paper negs, but the same technique works with film. Naturally, the lighting conditions will have a big impact, whether you're near a window, etc. I have not worked much with T-Max, but my memory is that, at long exposures, it is way faster than other 100 ASA films. Hope this helps. Tom - Original Message - From: Sarah Heidt heidtsa...@hotmail.com To: pinhole-discussion@p at ??? Sent: Sunday, April 07, 2002 8:16 AM Subject: [pinhole-discussion] help with indoor exposures needed I have been fairly happy with my results when taking pinhole pictures outdoors but I am not sure how to figure out the exposure for indoor shots. I know this is a really novice question, but sould someone help? The last picture I tried indoors came out totally overexposed. I was using TMax 100 film and I exposed for 1 minute which I thought might not be long enough, but it was too long. Sarah Heidt _ Chat with friends online, try MSN Messenger: http://messenger.msn.com ___ Post to the list as PLAIN TEXT only - no HTML Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.???/discussion/
RE: [pinhole-discussion] help with indoor exposures needed
Hi Sarah, I'll share my two cents for all it's worth. I shoot 125 asa and 400 asa BW from Photo Warehouse in my Zero 2000. Mostly though I use the 125 asa film. I am also a shoot with the seat of your pants type pinholer. On a sunny day my outdoor exposure is roughly 4 to 6 seconds, a cloudy day/shade is 8 to 12 seconds. So when I move indoors I use a method that I use with my students. Within 6 to around 3' from a brightly lit window I double the outside time in the shade to 16 to 24 seconds. As I move further into the room I continue to double the further I get away from the natural light. Most days this works well and we get consistent results. I've tried to develop an intuitive sense for the light levels around me and shoot more on faith. Rarely am I disappointed. Well, that's just one pinholer's opinion. Good luck and shoot and have fun. Take Care, ~Chuck Flagg~
