RE: [pinhole-discussion] pinhole video?
Once I decided to put a pinhole lens on a movie camera, I checked into these pinhole lenses, it seems thy are NOT a true pinhole in spite of being called that. The pinhole-name refers to the diameter of the Glass in the lens (about 1/8 inch diameter). That doesn't mean that the entire lens is 1/8 diameter though. The barrel is still about 1 1/4 wide (standard size-nothing unusual there). But, If anyone DOES know of a really small diameter C-mount lens, please don't hesitate to let me know, such things do exist, and would be quite useful to me. I hope this helps, Thanks -Ed Gendron There are pinhole video cameras for sale all the time on Ebay the back of electronic's magazines...tiny, tiny cameras... -Original Message- From: pinhole-discussion-admin@p at ??? [mailto:pinhole-discussion-admin@p at ???]On Behalf Of elis...@another.com Sent: Thursday, October 05, 2000 12:20 PM To: pinhole-discussion@p at ??? Subject: Re: [pinhole-discussion] pinhole video? hello micheal, i haven't actually tried video pinhole myself but i have made camera obscuras. In which the passing cars etc can clearly be seen. so in theory it should work. it would be great to play with! have fun! bye emma luv em x Your email address says a lot about you. Express yourself @ another.com http://another.com/jump.jsp?destDesc=another.com/login.jsp?sig=393 ___ Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.p at ???/discussion/ -- ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Edwin Gendron Virginia Tech Residential and Dining Programs Graphics 43 Owens Hall (0223) Blacksburg, Va. 24061 (540)231-5398 egend...@vt.edu
RE: [pinhole-discussion] pinhole video?
There are pinhole video cameras for sale all the time on Ebay the back of electronic's magazines...tiny, tiny cameras... -Original Message- From: pinhole-discussion-admin@p at ??? [mailto:pinhole-discussion-admin@p at ???]On Behalf Of elis...@another.com Sent: Thursday, October 05, 2000 12:20 PM To: pinhole-discussion@p at ??? Subject: Re: [pinhole-discussion] pinhole video? hello micheal, i haven't actually tried video pinhole myself but i have made camera obscuras. In which the passing cars etc can clearly be seen. so in theory it should work. it would be great to play with! have fun! bye emma luv em x Your email address says a lot about you. Express yourself @ another.com http://another.com/jump.jsp?destDesc=another.com/login.jsp?sig=393
RE: [pinhole-discussion] pinhole video?
I realize it is a shameful public display of my ignorance, but... Can a pinhole lens be adapted to black and white video photography? Sure thing. Just get one of those cheap surveillance pinhole cameras and connect it to a VCR and you have it. Marlin P. Jones sells a black and white one for as little as $39.95 to $59.95: 800/652-6733 www.mpja.com Sam Wang
Re: [pinhole-discussion] pinhole video?
Many cheap video pinhole cameras are sold on the WWW. They may have plastic lenses. They may or may not tolerate the radiation. Richard Heather Goriup, Michael R wrote: Thanks to both of you who responded so quickly and optimistically. I'll ask my friends in the labs to try it out. The problem (around here they call them opportunities) we're looking at is video guiding remote work in high radiation fields. Most lens materials are adversely affected by the radiation and turn dark (usually brown) within a short time (days or weeks). I can shield the electronics to last a reasonable amount of time, it would be nice if I could get away from lenses too.
RE: [pinhole-discussion] pinhole video?
Michael, Well...hopefully this will help solve a few opportunities. Good luck. -- ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Edwin Gendron Virginia Tech Residential and Dining Programs Graphics 43 Owens Hall (0223) Blacksburg, Va. 24061 (540)231-5398 egend...@vt.edu
RE: [pinhole-discussion] pinhole video?
Michael, I recalled something about using pinholes in x-ray imaging in space and found the item here: http://www.p at ???/diary/1998/1998_August.php Don't know if this will be useful for what you're doing, but interesting anyway. Gregg -Original Message- From: Goriup, Michael R [mailto:goriu...@id.doe.gov] Sent: Thursday, October 05, 2000 2:48 PM To: 'pinhole-discussion@p at ???' Subject: RE: [pinhole-discussion] pinhole video? Thanks to both of you who responded so quickly and optimistically. I'll ask my friends in the labs to try it out. The problem (around here they call them opportunities) we're looking at is video guiding remote work in high radiation fields. Most lens materials are adversely affected by the radiation and turn dark (usually brown) within a short time (days or weeks). I can shield the electronics to last a reasonable amount of time, it would be nice if I could get away from lenses too. -Original Message- From: edwin gendron [SMTP:egend...@vt.edu] Sent: Thursday, October 05, 2000 11:35 AM To: pinhole-discussion@p at ??? Subject:Re: [pinhole-discussion] pinhole video? Michael, One more thing, I believe that your video camera MUST have a REMOVABLE LENS in order to replace it with the pinhole aperture that you wish to use. I realize it is a shameful public display of my ignorance, but... Can a pinhole lens be adapted to black and white video photography? ___ Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.p at ???/discussion/ -- ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Edwin Gendron Virginia Tech Residential and Dining Programs Graphics 43 Owens Hall (0223) Blacksburg, Va. 24061 (540)231-5398 egend...@vt.edu ___ Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.p at ???/discussion/ ___ Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.p at ???/discussion/
RE: [pinhole-discussion] pinhole video?
Thanks to both of you who responded so quickly and optimistically. I'll ask my friends in the labs to try it out. The problem (around here they call them opportunities) we're looking at is video guiding remote work in high radiation fields. Most lens materials are adversely affected by the radiation and turn dark (usually brown) within a short time (days or weeks). I can shield the electronics to last a reasonable amount of time, it would be nice if I could get away from lenses too. -Original Message- From: edwin gendron [SMTP:egend...@vt.edu] Sent: Thursday, October 05, 2000 11:35 AM To: pinhole-discussion@p at ??? Subject: Re: [pinhole-discussion] pinhole video? Michael, One more thing, I believe that your video camera MUST have a REMOVABLE LENS in order to replace it with the pinhole aperture that you wish to use. I realize it is a shameful public display of my ignorance, but... Can a pinhole lens be adapted to black and white video photography? ___ Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.p at ???/discussion/ -- ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Edwin Gendron Virginia Tech Residential and Dining Programs Graphics 43 Owens Hall (0223) Blacksburg, Va. 24061 (540)231-5398 egend...@vt.edu ___ Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.p at ???/discussion/
Re: [pinhole-discussion] pinhole video?
Michael, I am trying to do 16mm (film) pinhole photo, and I am finding that for optimum-pinhole size the f-stop is around F-100. Leaving me and my 40 ASA film stock at a rough shutter speed (metered for the lights that I use) of TWO MINUTES. Now, on the other hand I have seen (on the web) a fellow who made a (non-optimum size) pinhole with an F-stop of 30 for a 16mm movie camera, and push-processed his 500 ASA film accordingly to get a good exposure. The point of all of this is: how light sensitive is your video camera? You MAY (though I have not tried it) have to make a very large pinhole to get a decent exposure. But then again, it could be just the look you need...who knows?? why not try it? If you already have the camera, it won't add much cost to slap a homemade pinhole lens on the front, w/ camera tape or some similar method. I am experimenting too, let me know how that turns out. Good luck, -Ed Gendron I realize it is a shameful public display of my ignorance, but... Can a pinhole lens be adapted to black and white video photography? ___ Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.p at ???/discussion/ -- ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Edwin Gendron Virginia Tech Residential and Dining Programs Graphics 43 Owens Hall (0223) Blacksburg, Va. 24061 (540)231-5398 egend...@vt.edu
