RE: [pinhole-discussion] Strange Problem and I need some help.
Looking at your photos it doesn't look as much like light reflection across the curve of the film [photo paper-but I do use pearl or matt myself]. It looks like the overexposure is coming across the bottom of your photo which would be at the top of the camera [the lid/]. I have seen this often with students who have small light leaks around their lid. I have them load a piece of paper, go out in the light for 30 sec to 1 min, but not open the pinhole. Then return to the dark room and develop the paper. If any parts turn gray or black you have a light leak. I usually just cover the lid with some electrical tape and have used portions of photo paper black plastic bags along with the tape. But then I am really a "seat of the pants-wing-it pinholer at heart" Just my 2 cents! Good luck Chuck Flagg
Re: [pinhole-discussion] Strange Problem and I need some help.
One paper that I had very good luck with in a half-cylinder mode is kodak Pmax fine art. It's advertized as "double-matte'. Doesn't eliminate fog entirely but the tonal range is quite good. - Original Message - From: "George L Smyth" To: Sent: Tuesday, August 13, 2002 2:10 PM Subject: Re: [pinhole-discussion] Strange Problem and I need some help. > > --- Tom Miller wrote: > > > > - Original Message - > > From: "ROBERTSON,TRAVIS J" > > > > > > >Chances are that the light you are seeing is caused by a reflection > > from > > > the > > > >surface of your film or paper. Did you paint the inside of the > > camera > > > black? > > > >That will help, though it may not eliminate the problem. > > > > > > I did paint the inside of the camera black. I did not consider that > > light > > > could reflect from the paper, (Duh :P )and I guess there is an > > advantage of > > > having a flat surface for your film. > > > > Don't give up on the curved film plane! Use a matt surface paper. It > > won't reflect light onto itself. The images will be spectacular. > > Another possibility is to use Tri-X. It has a surface that can be retouched > and (if memory serves) has somewhat of a matt finish. > > Cheers - > > george > > = > Handmade Photographic Images - http://GLSmyth.com > DRiP Investing - http://DRiPInvesting.org > > __ > Do You Yahoo!? > HotJobs - Search Thousands of New Jobs > http://www.hotjobs.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] Strange Problem and I need some help.
--- Tom Miller wrote: > > - Original Message - > From: "ROBERTSON,TRAVIS J" > > > > >Chances are that the light you are seeing is caused by a reflection > from > > the > > >surface of your film or paper. Did you paint the inside of the > camera > > black? > > >That will help, though it may not eliminate the problem. > > > > I did paint the inside of the camera black. I did not consider that > light > > could reflect from the paper, (Duh :P )and I guess there is an > advantage of > > having a flat surface for your film. > > Don't give up on the curved film plane! Use a matt surface paper. It > won't reflect light onto itself. The images will be spectacular. Another possibility is to use Tri-X. It has a surface that can be retouched and (if memory serves) has somewhat of a matt finish. Cheers - george = Handmade Photographic Images - http://GLSmyth.com DRiP Investing - http://DRiPInvesting.org __ Do You Yahoo!? HotJobs - Search Thousands of New Jobs http://www.hotjobs.com
Re: [pinhole-discussion] Strange Problem and I need some help.
One way to test for unperceived leaks is to cover the whole camera with a black plastic garbage bag, leaving only the pinhole showing. the repeat the exposure situation. - Original Message - From: "ROBERTSON,TRAVIS J" To: Sent: Tuesday, August 13, 2002 9:50 AM Subject: [pinhole-discussion] Strange Problem and I need some help. > My photos are having problems and I posted some example hoping that I can > find out what is the problem. Please note that this is my first camera and > I have been doing this for about a week. I'm just trying to work out the > kinks in my camera design. > > This photo was a 2-min exposure on a very overcast sky about 20 min before > sunset. I just wanted to see how a long exposure would turn out. Can you > see the two vertical lines down the middle of the photo? What could cause > that? > http://www.???/discussion/upload/gallery2002.php?cmd=max&star > t=&pic=trfarm_lines.jpg > > The photo below was the same shot but was a 1 min and 30 second exposure and > now I have a strange light source coming from the bottom. Could it be cause > by a problem with my pinhole? I sure I don't have any light leaks. I'm > using an oatmeal pinhole camera. > http://www.???/discussion/upload/gallery2002.php?cmd=max&star > t=&pic=trfarm_lightproblem.jpg > > ___ > 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] Strange Problem and I need some help.
- Original Message - From: "ROBERTSON,TRAVIS J" > > >Chances are that the light you are seeing is caused by a reflection from > the > >surface of your film or paper. Did you paint the inside of the camera > black? > >That will help, though it may not eliminate the problem. > > I did paint the inside of the camera black. I did not consider that light > could reflect from the paper, (Duh :P )and I guess there is an advantage of > having a flat surface for your film. Don't give up on the curved film plane! Use a matt surface paper. It won't reflect light onto itself. The images will be spectacular. > I also might be getting a reflection > from my pinhole because I did not want to pant it black, because they say it > will mess up your hole, so this could be a problem. To tried to get around > this problem by using electrical tape to cover as much of the metal I could. > I bet that light could reflect off of the tape. I hope that this helps > other people in some way. 3M's photographer's tape works well, too, but is a little more pricey than other alternatives. Tom
Re: [pinhole-discussion] Strange Problem and I need some help.
- Original Message - From: "Eric S. Theise" > > And the source online that talks about using silver foil and blackening > that with selenium toner always seemed very elegant to me. That's Larry Bullis, if memory serves me well. I tried to find a local place that'd roll some silver for me but couldn't find one. That method works well 'cause the toner blacken the silver at a molecular level, so no clogging on the hole can occur, pretty elegant, as you said. Guillermo
Re: [pinhole-discussion] Strange Problem and I need some help.
- Original Message - From: "George L Smyth" > > Another way of masking the pinhole surface is to simply blacken it with a > Sharpie. That's what I do. I ink as close to hole as possible w/o actually touching its edge. Having said that, I never noticed any difference when I don't blacken the pinhole material, provided the unpainted area is not larger than 3/4 x 3/4". Guillermo
Re: [pinhole-discussion] Strange Problem and I need some help.
George L Smyth writes: > Another way of masking the pinhole surface is to simply blacken it with a > Sharpie. And the source online that talks about using silver foil and blackening that with selenium toner always seemed very elegant to me. --Eric
Re: [pinhole-discussion] Strange Problem and I need some help.
--- "Eric S. Theise" wrote: > ROBERTSON,TRAVIS J writes: > > I also might be getting a reflection > > from my pinhole because I did not want to pant it black, because they say > it > > will mess up your hole, so this could be a problem. To tried to get > around > > this problem by using electrical tape to cover as much of the metal I > could. > > I bet that light could reflect off of the tape. > > Yes, electrical tape is pretty shiny and I'd avoid it on a camera's > interior. To mask my pinholes, I use gaffers tape, which has a nice > matte, non-reflective surface. Regular duct tape is shiny enough to > worry me, too. Another way of masking the pinhole surface is to simply blacken it with a Sharpie. Cheers - george = Handmade Photographic Images - http://GLSmyth.com DRiP Investing - http://DRiPInvesting.org __ Do You Yahoo!? HotJobs - Search Thousands of New Jobs http://www.hotjobs.com
Re: [pinhole-discussion] Strange Problem and I need some help.
ROBERTSON,TRAVIS J writes: > I also might be getting a reflection > from my pinhole because I did not want to pant it black, because they say it > will mess up your hole, so this could be a problem. To tried to get around > this problem by using electrical tape to cover as much of the metal I could. > I bet that light could reflect off of the tape. Yes, electrical tape is pretty shiny and I'd avoid it on a camera's interior. To mask my pinholes, I use gaffers tape, which has a nice matte, non-reflective surface. Regular duct tape is shiny enough to worry me, too. I also found an interesting tool a month or so ago: a hole punch with a rotating head, so that different sized holes can be punched from the same tool. I punch a small -- 1/8" -- hole in the center of a piece of gaffers and use the tape to either secure the brass in place or to back up and seal the edges of a glue bond. --Eric
RE: [pinhole-discussion] Strange Problem and I need some help.
>Chances are that the light you are seeing is caused by a reflection from the >surface of your film or paper. Did you paint the inside of the camera black? >That will help, though it may not eliminate the problem. I did paint the inside of the camera black. I did not consider that light could reflect from the paper, (Duh :P )and I guess there is an advantage of having a flat surface for your film. I also might be getting a reflection from my pinhole because I did not want to pant it black, because they say it will mess up your hole, so this could be a problem. To tried to get around this problem by using electrical tape to cover as much of the metal I could. I bet that light could reflect off of the tape. I hope that this helps other people in some way. Thanks everyone. Travis. -Original Message- From: George L Smyth [mailto:glsm...@yahoo.com] Sent: Tuesday, August 13, 2002 10:03 AM To: pinhole-discussion@p at ??? Subject: Re: [pinhole-discussion] Strange Problem and I need some help. --- "ROBERTSON,TRAVIS J" wrote: > My photos are having problems and I posted some example hoping that I can > find out what is the problem. Please note that this is my first camera and > I have been doing this for about a week. I'm just trying to work out the > kinks in my camera design. > > This photo was a 2-min exposure on a very overcast sky about 20 min before > sunset. I just wanted to see how a long exposure would turn out. Can you > see the two vertical lines down the middle of the photo? What could cause > that? > http://www.???/discussion/upload/gallery2002.php?cmd=max&star > t=&pic=trfarm_lines.jpg > > The photo below was the same shot but was a 1 min and 30 second exposure and > now I have a strange light source coming from the bottom. Could it be cause > by a problem with my pinhole? I sure I don't have any light leaks. I'm > using an oatmeal pinhole camera. > http://www.???/discussion/upload/gallery2002.php?cmd=max&star > t=&pic=trfarm_lightproblem.jpg Chances are that the light you are seeing is caused by a reflection from the surface of your film or paper. Did you paint the inside of the camera black? That will help, though it may not eliminate the problem. Cheers - george = Handmade Photographic Images - http://GLSmyth.com DRiP Investing - http://DRiPInvesting.org __ Do You Yahoo!? HotJobs - Search Thousands of New Jobs http://www.hotjobs.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] Strange Problem and I need some help.
--- "ROBERTSON,TRAVIS J" wrote: > My photos are having problems and I posted some example hoping that I can > find out what is the problem. Please note that this is my first camera and > I have been doing this for about a week. I'm just trying to work out the > kinks in my camera design. > > This photo was a 2-min exposure on a very overcast sky about 20 min before > sunset. I just wanted to see how a long exposure would turn out. Can you > see the two vertical lines down the middle of the photo? What could cause > that? > http://www.???/discussion/upload/gallery2002.php?cmd=max&star > t=&pic=trfarm_lines.jpg > > The photo below was the same shot but was a 1 min and 30 second exposure and > now I have a strange light source coming from the bottom. Could it be cause > by a problem with my pinhole? I sure I don't have any light leaks. I'm > using an oatmeal pinhole camera. > http://www.???/discussion/upload/gallery2002.php?cmd=max&star > t=&pic=trfarm_lightproblem.jpg Chances are that the light you are seeing is caused by a reflection from the surface of your film or paper. Did you paint the inside of the camera black? That will help, though it may not eliminate the problem. Cheers - george = Handmade Photographic Images - http://GLSmyth.com DRiP Investing - http://DRiPInvesting.org __ Do You Yahoo!? HotJobs - Search Thousands of New Jobs http://www.hotjobs.com
