FreeTrack Forum - Using negative film

Home

Welcome, you're not connected. ( Log in - Register )

FreeTrack Forum > FreeTrack : English Forum > Support : Tracking System > Using negative film

RSS > Using negative film

Syquus	#1 19/02/2009 - 01h49 Top
Class : Apprenti Posts : 23 Registered on : 18/01/2009 Off line	My main problem with this (prior to try it) is: Should the negative be taken from a NEW film, or a developed one? Everything i read about using it on a lens, seems to be related to developed ones. But I haven't a camera neither a photo studio near my home, so the only thing I have is a new photo film. Will it work?
Volans	#2 19/02/2009 - 09h56 Top
Class : Apprenti Posts : 39 Registered on : 14/11/2007 Off line	It has to be an exposed frame, but totaly dark, NOT an exposed photo (known as 'negative'). So, if you don't need the photo film anymore, take it out from the protective case, thus exposing it to the light. Very soon the film will become dark, cut a piece from it and use this as a filter to webcam. Ussualy the photo film is a relativly weak filter, so, if you find that will not block enough visible light, use two pieces of film overlapped. Alternative: you might use a piece of the magnetic disk found in an old floppydisk, just rip the plastic case of the floppy and you will find a disk of thin black plastic (the magnetic disk)....cut a piece and use it accordingly. The floppy one is a more stronger filter of visible light, so you will need only one layer. Have fun!
Syquus	#3 19/02/2009 - 16h13 Top
Class : Apprenti Posts : 23 Registered on : 18/01/2009 Off line	Volans @ 19/02/2009 - 09h56 a dit: It has to be an exposed frame, but totaly dark, NOT an exposed photo (known as 'negative'). So, if you don't need the photo film anymore, take it out from the protective case, thus exposing it to the light. Very soon the film will become dark, cut a piece from it and use this as a filter to webcam. Ussualy the photo film is a relativly weak filter, so, if you find that will not block enough visible light, use two pieces of film overlapped. Alternative: you might use a piece of the magnetic disk found in an old floppydisk, just rip the plastic case of the floppy and you will find a disk of thin black plastic (the magnetic disk)....cut a piece and use it accordingly. The floppy one is a more stronger filter of visible light, so you will need only one layer. Have fun! Great man! That's what I needed to know!!! thanks a million!
stewart32	#4 19/02/2009 - 23h21 Top
Class : Apprenti Posts : 1 Registered on : 18/02/2009 Off line	just as a note i am using the floppy disc mephod tade the inside from a floppy disc and use that works fine for me i am using 3mm infrared leds and trackes them fine
fogmaster	#5 21/02/2009 - 17h54 Top
Class : Apprenti Posts : 5 Registered on : 20/02/2009 Off line	Volans @ 19/02/2009 - 09h56 a dit: It has to be an exposed frame, but totaly dark, NOT an exposed photo (known as 'negative').... Man... the FAQ / Website / Manual all say to use an "Unexposed" piece of film negative. I was using a little bit of negative with no photo that was clearish brown... I switched to a floppy disk and it worked much better. Also, it is MUCH easier to simply cut a small piece and fit it between the sensor and the lens.
vagos	#6 22/02/2009 - 14h21 Top
Class : Apprenti Posts : 22 Registered on : 12/02/2009 Off line	The far best method to remove ALL the visible light is by using developed colour film (slides), the dark part ofcourse. It is strong enough to filter out even direct light from flashlights
Volans	#7 22/02/2009 - 20h37 Top
Class : Apprenti Posts : 39 Registered on : 14/11/2007 Off line	"Man... the FAQ / Website / Manual all say to use an "Unexposed" piece of film negative." Man....and how do you plan to USE the piece of film to filter LIGHT, and yet to keep it UNEXPOSED...to the light??. A NEGATIVE is an ALREADY EXPOSED frame, much or les, therefore will be darker or lighter....Plain curiosity, take a look to an unexposed film, in an obscure chamber, and you will find that unexposed is almoust transparent. When the faq leave u ,use internet.

FreeTrack Forum > FreeTrack : English Forum > Support : Tracking System > Using negative film

> Stats

1 user(s) connected during the last 10 minutes (0 member(s) and 1 guest(s)).