DPChallenge: A Digital Photography Contest You are not logged in. (log in or register) 
 

DPChallenge Forums >> Hardware and Software >> Infra-red Filters?
Pages:  
Showing posts 26 - 41 of 41, (reverse)
AuthorThread
 10/06/2004 03:09:16 PM · #26
Originally posted by doctornick:
Infrared filters for imfrared photography don't work on digital cameras,


From what I have seen, it works better on digital.
 10/06/2004 03:20:18 PM · #27
There is a conversion on Canon 300D's where the internal IR blocking filter is removed for use in astrophotography. However, if done by Canon, the price of the camera jumps several hundred dollars!

Apparently it increases the clarity of the photo...just passing this on from my neighbour who does astrophotography...me, I know nothing!
 10/06/2004 03:58:25 PM · #28
Many astronomical objects emit light at a wavelength known as Hydrogen-Alpha (Há), which is right at the threshold of human red perception and is blocked by IR blocking filters. So removing the filter allows the capture of details it would normally block.

I've not tried them, but converted 300D's are available (Hutech is one company that sells them). The modified cameras may be useful for terrestrial IR photography as well. I'm wondering if you can use one of these with an IR blocking filter on the front of the lens for normal photography.
 10/06/2004 04:18:13 PM · #29
Originally posted by dr rick:
Many astronomical objects emit light at a wavelength known as Hydrogen-Alpha (Há), which is right at the threshold of human red perception and is blocked by IR blocking filters. So removing the filter allows the capture of details it would normally block.

I've not tried them, but converted 300D's are available (Hutech is one company that sells them). The modified cameras may be useful for terrestrial IR photography as well. I'm wondering if you can use one of these with an IR blocking filter on the front of the lens for normal photography.


Thanks for that info dr rick, at least I didn't an ass of myself with that thread!

I know...from my neighbour...that converted camera is no good for normal use as is, so the filter on front, should?? restore it to some degree of normal usage.
 10/06/2004 04:27:31 PM · #30
They work with the 10D fine, just don't try and use it with a 50mm prime, which I found out much to my chagrin. The lense causes a nasty flare in the centre of the image.
 10/06/2004 05:09:29 PM · #31
No, wait!!! No one saw my request!

From earlier:
would anyone who does infrared photography mind posting some straight-out-of-the-camera shots, so i can get an idea of how much is done in-camera and how much is PS adjusted? it's still too cloudy here to get a good shot (well, that and i'm at work), but i'd like to keep learning in my down time.

thanks in advance!!
 10/06/2004 05:55:23 PM · #32
Originally posted by annasense:
No, wait!!! No one saw my request!

From earlier:
would anyone who does infrared photography mind posting some straight-out-of-the-camera shots, so i can get an idea of how much is done in-camera and how much is PS adjusted? it's still too cloudy here to get a good shot (well, that and i'm at work), but i'd like to keep learning in my down time.


Before:



After:



/Andrew
10/06/2004 07:05:25 PM · #33
Originally posted by Kha0S:


Before:



After:



/Andrew


Thanks, Andrew! I thought I was supposed to shoot in B/W mode... do I not have to?
 10/06/2004 07:14:47 PM · #34
Originally posted by annasense:

Thanks, Andrew! I thought I was supposed to shoot in B/W mode... do I not have to?


No, shoot in color and then convert to B&W
 10/06/2004 08:03:49 PM · #35
Originally posted by cbeller:
Originally posted by annasense:

Thanks, Andrew! I thought I was supposed to shoot in B/W mode... do I not have to?


No, shoot in color and then convert to B&W


Also, if you custom whitebalance for infrared, you'll get some more interesting results.
 10/06/2004 09:29:31 PM · #36
try applying this action to it. Works great.
 10/06/2004 10:12:27 PM · #37
Originally posted by VisiBlanco:
Originally posted by cbeller:
Originally posted by annasense:

Thanks, Andrew! I thought I was supposed to shoot in B/W mode... do I not have to?


No, shoot in color and then convert to B&W


Also, if you custom whitebalance for infrared, you'll get some more interesting results.


Thanks to both of you! See, I just keep learning! I love this site!!!! :)
 10/06/2004 10:39:36 PM · #38
hi,

try levels on photoshop, u have just to tweak a bit on your pic... i checked on it, i think u shot some leaves.
here it the corrected image


Originally posted by annasense:


What have I done wrong? I just tried out my new infrared filter (Hoya R72) and, um... it's not working. Surely I've messed up somehow.

ISO 50
4" shutter speed
f/3.5

Any help is MOST appreciated.


Message edited by author 2004-10-06 22:54:03.
 10/06/2004 10:45:36 PM · #39
Originally posted by quarx:
hi,

try levels on photoshop, u have just to tweak a bit on your pic... i checked on it, i think u shot some leaves.

Originally posted by annasense:


What have I done wrong? I just tried out my new infrared filter (Hoya R72) and, um... it's not working. Surely I've messed up somehow.

ISO 50
4" shutter speed
f/3.5

Any help is MOST appreciated.


I changed the levels, too... it's just not quite what I was going for... once I get a decent shot in good sunlight, I'm sure the levels will come into good use to tweak a better starting place. :)
10/06/2004 10:56:15 PM · #40
hi,

anybody has verified this?
see-thru-clothes
 10/07/2004 07:39:41 PM · #41
Originally posted by longlivenyhc:
works on a 300D too, chiqui had some pics up of her experiments with the infrared filter on her 300D i believe.
edit: cant seem to find the thread, dont know if it exists lol. but i do know the 300D responds to IR, i did the remote control test a while back and it worked.


well what do ya know, i found the old thread i was talking about.
link
Pages:  
Current Server Time: 08/02/2025 04:42:15 PM

Please log in or register to post to the forums.


Home - Challenges - Community - League - Photos - Cameras - Lenses - Learn - Help - Terms of Use - Privacy - Top ^
DPChallenge, and website content and design, Copyright © 2001-2025 Challenging Technologies, LLC.
All digital photo copyrights belong to the photographers and may not be used without permission.
Current Server Time: 08/02/2025 04:42:15 PM EDT.