Go Back   Tiffen Community > Tiffen Filters

Reply
 
Thread Tools Display Modes

Diffrent between IR Filter and Hot Mirror IR Filter
  #1  
Old 02-14-2013, 06:44 AM
Manav Manav is offline
New Member
 
Join Date: Feb 2013
Posts: 2
Default Diffrent between IR Filter and Hot Mirror IR Filter

Hi plz enplane me the different between IR Filter and Hot Mirror IR Filter and in which condition should i chose the one of them
thx
Reply With Quote

  #2  
Old 02-14-2013, 09:29 AM
Jon Jon is offline
Senior Member
 
Join Date: Oct 2008
Location: Kensington, MD USA
Posts: 154
Default

An IR filter will pass only infrared light; a hot mirror IR filter will cut off IR light. So they're exact opposites in effect.
Reply With Quote

  #3  
Old 02-14-2013, 09:47 PM
Manav Manav is offline
New Member
 
Join Date: Feb 2013
Posts: 2
Default

wt ll be effect when i use ir filter or hot mirror if filter enplane me details thx..
Reply With Quote

  #4  
Old 02-15-2013, 10:28 AM
Jon Jon is offline
Senior Member
 
Join Date: Oct 2008
Location: Kensington, MD USA
Posts: 154
Default

If you use the IR filter, all visible light will be blocked; depending on your digital camera (many, especially high-end, cameras already have a hot-mirror IR filter over the sensor to block IR light from striking it) you may or may not get a picture; if you do, you'll need a very long exposure. If you're using film, you'll find out how sensitive the particular film you're using is to infrared - unless you're using IR film, my guess is "not very".

If you use the "hot mirror" IR filter, only visible light will be able to reach the sensor. As I said above, most high-end digital cameras already have a hot mirror directly over the sensor. You can find out if yours does by taking a picture while you use an infrared remote control (like for a TV or DVD player) aimed at the camera. If the camera doesn't have a hot mirror, the IR LED on the front of the remote will show up bright.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is Off
Smilies are Off
[IMG] code is Off
HTML code is Off

Forum Jump



All times are GMT -5. The time now is 02:52 AM.


vBulletin skin developed by: eXtremepixels
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.