RE: [pinhole-discussion] I am not this body
Barbara Ess: http://www.artnet.com/Magazine/reviews/morris/morris6-4-96.asp http://www.artnet.com/magazine/reviews/ebony/ebony(6)5-19-98.asp http://inside.bard.edu/photo/faculty/ess.html http://www.newschool.edu/infotech/va1/va1f97/SONG.HTM http://www.curtmarcus.com/exhibitions/history_detail.asp?exID=9 I love Google.g Mike Keller http://www.mikekellerphoto.com
[pinhole-discussion] no decent images
From: b2myo...@aol.com I have no decent images at the moment... leezy, I know what you mean! all my energy is going to students teachers right now, hang in there... jim k
[pinhole-discussion] I am not this body
Hi. I found this book on line titled I AM NOT THIS BODY. I don't know who Barbara Ess is, but the cover looks interesting. http://www.aperture.org/view.php?view=viewPublicationID=71 FYI Rosanne
Re: [pinhole-discussion] What is Lith Printing? Lith Printing 101
Guy, This is more than generous. I shall file it away with all my to Do's. It seems that it must take alot of patience. Since I have no decent images at the moment...it doesn't pay to put that kind of time into iteventually. Thank you, leezy
Re: [pinhole-discussion] Good for anything? and non pinhole Polaroid link
Murray wrote: Polaroid Square Shooter 2 -- Film no longer available Polaroid Color Pack 2 -- Film still available Polaroid Automatic 210 -- Film still available Kodak Pleaser Instant Camera -- Film no longer available Mike Vande Bunt
[pinhole-discussion] Construction: slit cameras?
Hi Mac, The format for the two images is 4x5. The rule of thumb I heard was to meter the scene at f90 and give it two more stops. This gives exposures of 1 or 2 seconds in bright sun with Ektachrome 64T (EPY). The few pinhole exposures I've made with 4x5 EPY were in the 16 second range. Naturally the slit exposure times can vary depending on the width and length of the slits; but I've found that this rule of thumb works well in almost all cases. (Also, I have a lab cross-process the EPY film to C41 and use the negative image to make color prints.) Tom Okay Tom, Now I really need to try this. I think I will just use 4x5 BW. You have have already gone over this and I missed it. If i remember you have two slits. One a questionmark shap and the other kind of like a 30 degree bent straw. How wide are the slits? 1-2mm? What is the distance between the slits? Touching oran inch? What focal length are you using to cover 4x5? inches? I assume you are not focusing or use a ground glass? I have a 5x7 field camera, but this sounds like a job for some black foamcore. God I love black foam core.:-) Thanks Mac
Re: [pinhole-discussion] slit cameras?
Thanks guys. But what does it mean in pratical terms of constructing or pairing differently shaped slits. Is there anything I can do or avoid to do in order to eliminate or diffuse the problem? Regards, Brigitte. Guillermo pen...@home.com To: pinhole-discussion@p at ??? Sent by: cc: pinhole-discussion-admin@pSubject: Re: [pinhole-discussion] slit cameras? inhole.com 07/11/2001 13:08 Please respond to pinhole-discussion - Original Message - From: Tom Miller twmil...@mr.net Also, do you have any explanation why in some slit configurations there is a lot of banding (thin black lines) forming over the image? This quote is from Jim Moninger's article in the Pinhole Journal vol. 15 #1 : These are apparently caused by the light rays / waves with form the two separate images becoming out of phase with one another. Tom Not just out of phase but 180 degrees from each other. This -perhaps- are regions where light (wave) diffracted by one slit is at its maximum peak (+) and light (wave) diffracted by the other slit not just overlaps the former but happens to be at its lowest peak (-), the net effect is darkness, light from one slit canceling out with light from the other slit, weird, eh? This BTW, is called Destructive Interference. Guillermo ___ Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.???/discussion/ STRICTLY CONFIDENTIAL. The contents of this email and any attachments are strictly confidential and they may not be used or disclosed by someone who is not a named recipient. If you have received this email in error please notify the sender by replying to this email inserting the word misdirected as the message.
Re: [pinhole-discussion] slit cameras?
- Original Message - From: Tom Miller twmil...@mr.net Also, do you have any explanation why in some slit configurations there is a lot of banding (thin black lines) forming over the image? This quote is from Jim Moninger's article in the Pinhole Journal vol. 15 #1 : These are apparently caused by the light rays / waves with form the two separate images becoming out of phase with one another. Tom Not just out of phase but 180 degrees from each other. This -perhaps- are regions where light (wave) diffracted by one slit is at its maximum peak (+) and light (wave) diffracted by the other slit not just overlaps the former but happens to be at its lowest peak (-), the net effect is darkness, light from one slit canceling out with light from the other slit, weird, eh? This BTW, is called Destructive Interference. Guillermo
Re: [pinhole-discussion] slit cameras?
Hi Brigitte, Brigitte wrote: I have found that the slit nearest to the film plane (i.e. the inner slit) shapes the image contortion significantly more than the other slit. Is this your experience as well? Yes. The conclusion I've come to is that the inner slit determines the overall shape of the image when it hits the film plane and the outer slit determines distortion within this shape. There's a lot going on beyond this simple rule, but using it has helped me better match slits with subject. Also, do you have any explanation why in some slit configurations there is a lot of banding (thin black lines) forming over the image? This quote is from Jim Moninger's article in the Pinhole Journal vol. 15 #1 : These are apparently caused by the light rays / waves with form the two separate images becoming out of phase with one another. Tom
Re: [pinhole-discussion] slit cameras?
Tom, I have found that the slit nearest to the film plane (i.e. the inner slit) shapes the image contortion significantly more than the other slit. Is this your experience as well? Also, do you have any explanation why in some slit configurations there is a lot of banding (thin black lines) forming over the image? Regards, Brigitte. Tom Miller twmil...@mr.net To: pinhole-discussion@p at ??? Sent by: cc: pinhole-discussion-admin@pSubject: Re: [pinhole-discussion] slit cameras? inhole.com 07/11/2001 04:54 Please respond to pinhole-discussion Hi Mac, The format for the two images is 4x5. The rule of thumb I heard was to meter the scene at f90 and give it two more stops. This gives exposures of 1 or 2 seconds in bright sun with Ektachrome 64T (EPY). The few pinhole exposures I've made with 4x5 EPY were in the 16 second range. Naturally the slit exposure times can vary depending on the width and length of the slits; but I've found that this rule of thumb works well in almost all cases. (Also, I have a lab cross-process the EPY film to C41 and use the negative image to make color prints.) Tom - Original Message - From: SPRINGTYME font...@usa.net To: pinhole-discussion@p at ??? Sent: Tuesday, November 06, 2001 10:24 PM Subject: Re: [pinhole-discussion] slit cameras? Hi Tom! Thanks! What format? Was this 35mm? I think I'd like to give this a try. How do slit exposure times compare to pinhole? I'd gess a slit outputs a lot more light. Thanks Mac:-) ___ Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.???/discussion/ STRICTLY CONFIDENTIAL. The contents of this email and any attachments are strictly confidential and they may not be used or disclosed by someone who is not a named recipient. If you have received this email in error please notify the sender by replying to this email inserting the word misdirected as the message.
