[pinhole-discussion] going in circles
I want to pick some brains on how I might cut round pieces of film? I'm using 8x10 sheets. A scalpel around a tin didn't work - especially in a completely dark darkroom. Here's a page where I've posted some photos of what I'm trying to do and the results I've received thus far. www.merrillphoto.com/pintoidsours.htm Marcy, don't use the compass method nor the Logan mat cutter thingy. They both puncture the middle of your film - In fact the Logan punctures 4 holes. So for your circles, whether in film or on roads... Idea #1. There is a circular die for Sculpey that is 2 1/2 round, but I don't know if the edges are sharp enough for film. Idea #2 is getting a metal template at a drafting supply store [or catalogue] - you can use the pointy end of a compass and just go round-and-round until you pierce the film through. I think I would try that way first. Idea #3 is that you go to a school supply place in your area. They do have a sharp circular die for materials as heavy as poster paper and that is thicker that your film. But as to size, I don't know. Idea #4 is a real die cutter. The kind you can use for passport photos, etc. I don't know if they are available in round shapes, but you never know. Rosanne
Re: [pinhole-discussion] going in circles
--- Marcy Merrill ma...@merrillphoto.com wrote: Philip: But I don't HAVE two weeks! Maybe if I inject the mold with a hormone... or a or a steroid, or something? Well, I suppose you could be all old fashioned and mix a sensitized silver nitrate solution into the agar agar, take your pix and turn it out of the can to develop print through (think light sensitive knox blox, maybe? but will the gelatin/agar agar disolve in the developer?) -- pw __ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo http://search.yahoo.com
Re: [pinhole-discussion] Angle of projection
Guillermo, Thank you for your incredibly rapid response. This is exactly what I needed. Michael -- On Sat, 19 Apr 2003 11:00:11 Guillermo wrote: - Original Message - From: p g crd...@lycos.com Is there a simple formula, for the mathematically challenged, to calculate the light's angle of projection relative to the plane of an orifice as diagramed below? For the Lenox's Pinhole Competition, the camera is designed with multiple adaptors to reposition the disc to other locations using 1/2 interior diameter PVC fittings. I want to calculate how far below the 0.585 mm aperture the fitting can extend without protruding into the image's projection. Using this hardware the fittings will need to extend 10-12 mm below the disc. Will this work, or do I need to change the design? P.G: Your pinhole, if it is mounted right at the center of the fitting and if the fitting extend 12mm bellow the pinhole, will project an unobstructed cone of light of about 90 degrees (93.246 to be more exact). Will it work or do you need to change the design? It will as long as your camera is made with a focal length not shorter than half the diagonal of the format you are using. If you need shorter focal length than half the diagonal of the format, just use a fitting with a larger I.D. For math challenged, the best is to make a scale diagram on paper. Forgot the formulas, tell me if you really need them. Guillermo ___ 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/ Get advanced SPAM filtering on Webmail or POP Mail ... Get Lycos Mail! http://login.mail.lycos.com/r/referral?aid=27005
Re: [pinhole-discussion] Happy Easter!
- Original Message - From: Guy Glorieux guy.glori...@sympatico.ca May this weekend bring happiness and quiet peace to you and those around you. And many beautiful pinole photographs...! And I say amen to happiness and peace for this weekend, as for the beautiful pinhole photos, I wouldn't mind a delay of 1 week for that wish to come true :-) I am going to say it the way I'd say it in Spanish: Happy Holy week, everybody. Guillermo
Re: [pinhole-discussion] Angle of projection
- Original Message - From: p g crd...@lycos.com Is there a simple formula, for the mathematically challenged, to calculate the light's angle of projection relative to the plane of an orifice as diagramed below? For the Lenox's Pinhole Competition, the camera is designed with multiple adaptors to reposition the disc to other locations using 1/2 interior diameter PVC fittings. I want to calculate how far below the 0.585 mm aperture the fitting can extend without protruding into the image's projection. Using this hardware the fittings will need to extend 10-12 mm below the disc. Will this work, or do I need to change the design? P.G: Your pinhole, if it is mounted right at the center of the fitting and if the fitting extend 12mm bellow the pinhole, will project an unobstructed cone of light of about 90 degrees (93.246 to be more exact). Will it work or do you need to change the design? It will as long as your camera is made with a focal length not shorter than half the diagonal of the format you are using. If you need shorter focal length than half the diagonal of the format, just use a fitting with a larger I.D. For math challenged, the best is to make a scale diagram on paper. Forgot the formulas, tell me if you really need them. Guillermo
Re: [pinhole-discussion] going in circles
Marcy, No hole in the center with this one. Honestly the best circle cutter I've ever used http://www.buttonsonline.com/cutter.html Randy www.holgamods.com www.holgamods.com/pinholga/pinholga.html _ MSN 8 helps eliminate e-mail viruses. Get 2 months FREE*. http://join.msn.com/?page=features/virus
Re: [pinhole-discussion] altoids
http://www.merrillphoto.com/pintoids.htm ? Christophe Le samedi, 19 avr 2003, à 11:13 Europe/Paris, callum moffat a écrit : what the hell are they?? __ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo http://search.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] altoids
what the hell are they?? __ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo http://search.yahoo.com
[pinhole-discussion] Angle of projection
Is there a simple formula, for the mathematically challenged, to calculate the light's angle of projection relative to the plane of an orifice as diagramed below? I I I I For the Lenox's Pinhole Competition, the camera is designed with multiple adaptors to reposition the disc to other locations using 1/2 interior diameter PVC fittings. I want to calculate how far below the 0.585 mm aperture the fitting can extend without protruding into the image's projection. Using this hardware the fittings will need to extend 10-12 mm below the disc. Will this work, or do I need to change the design? Get advanced SPAM filtering on Webmail or POP Mail ... Get Lycos Mail! http://login.mail.lycos.com/r/referral?aid=27005
