Re: [pinhole-discussion] ballpark pinhole exposures for a gift pinhole camera?
- Original Message - From: "Philip willarney" snip >the focal length is about 40 mm, and I > haven't figured out an exact f-stop for the pinholes > yet). > > Use ASA 100 film > Bright sun: 2-4 seconds Philip, Usually it is the other way around, you figure out the times based on your aperture, and you find the aperture either by: 1-shooting and taking notes until you "know" your camera and based on that find the aperture, or 2-by measuring the pinhole diameter http://members.rogers.com/penate/diameter.htm In any case, based on your Bright sun exposure of 2 - 4 secs, the camera(s) should have an aperture of around f/180, that, in turn, dictates a pinhole size very close to the so called "optimum size". If I were you, I'd measure the pinholes, find the f/stop and then come up with the exposure table. I find that the easiest way to maintain or creating enthusiasm for something is by having success from the start and a good exposures table is surely a way to help your relatives to succeed from the beginning. Guillermo
Re: [pinhole-discussion] ballpark pinhole exposures for a gift pinhole camera?
Just an intuitive guess, but the times sound a little on the short side. For night exposures, I expose from a half hour after sunset until a half hour before sunrise. Gives decent shadow detail without washing evrything out. - Original Message - From: "Philip willarney" To: Sent: Monday, December 02, 2002 4:30 PM Subject: [pinhole-discussion] ballpark pinhole exposures for a gift pinhole camera? > I'm converting several cheapie 35mm cameras to pinhole > cameras as gifts for my nieces and nephews (remove > shutter & lens, poke & sand pinhole in bit of aluminum > pop can). I want to put an exposure guide (a variant > on the old sunny-16 rule) on a sticker on the back to > get them started, and wondered of this sounded about > right to folks (I'm basing this on my own dabbling, > but my records aren't great (my exposure notebook got > washed!)(the focal length is about 40 mm, and I > haven't figured out an exact f-stop for the pinholes > yet). > > pwillar...@yahoo.com > > Use ASA 100 film > Bright sun: 2-4 seconds > Partly shaded on sunny day: 4-10 seconds > Full shade: 10-20 seconds > Cloudy day: 10-20 seconds > Night: try 15 minutes, 1 hour, 2 hours, 4 hours, > (guess, and try a couple of different exposures) > Inside, lit by bright window: 1-4 minutes > Inside, lit by light bulbs: 2-10 minutes > Inside, dim: try 15 minutes, 1 hour, 2 hours, 4 hours > > > __ > Do you Yahoo!? > Yahoo! Mail Plus - Powerful. Affordable. Sign up now. > http://mailplus.yahoo.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/ >
[pinhole-discussion] ballpark pinhole exposures for a gift pinhole camera?
I'm converting several cheapie 35mm cameras to pinhole cameras as gifts for my nieces and nephews (remove shutter & lens, poke & sand pinhole in bit of aluminum pop can). I want to put an exposure guide (a variant on the old sunny-16 rule) on a sticker on the back to get them started, and wondered of this sounded about right to folks (I'm basing this on my own dabbling, but my records aren't great (my exposure notebook got washed!)(the focal length is about 40 mm, and I haven't figured out an exact f-stop for the pinholes yet). pwillar...@yahoo.com Use ASA 100 film Bright sun: 2-4 seconds Partly shaded on sunny day: 4-10 seconds Full shade: 10-20 seconds Cloudy day: 10-20 seconds Night: try 15 minutes, 1 hour, 2 hours, 4 hours, (guess, and try a couple of different exposures) Inside, lit by bright window: 1-4 minutes Inside, lit by light bulbs: 2-10 minutes Inside, dim: try 15 minutes, 1 hour, 2 hours, 4 hours __ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com
