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03/30/2005 08:02:44 PM · #1 |
I've been looking around at infared filters recently to use with my rebel. I noticed in my search on B&H there were infracolor filters. As of what I can tell, do they just remove certain colors from the picture? I am specifically wondering what the the final photograph would look like and what would happen if a picture taken with an infracolor filter would look like when changed to black and white. Is it along the lines of an infared filter? Or does it work in a completely different way?
Thanks
-Rob
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03/30/2005 08:04:14 PM · #2 |
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03/30/2005 08:10:58 PM · #3 |
Here is the infracolor filter from B&H.
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03/30/2005 08:13:56 PM · #4 |
Originally posted by Zap228:
Here is the infracolor filter from B&H. |
"This orange colored filter blocks the blue and blue-green portion of the visible spectrum up to approximately 520 nm. It reduces the excessive sensitivity of color infrared films for this spectral range, helps avoid a blue tint and differentiates colors more evenly. Filter factor depends upon the film sensitivity."
Appears to be specific to color infrared film. Who knows what it would do on digital sensors...?
Robt.
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03/30/2005 08:15:27 PM · #5 |
From the description:
This orange colored filter blocks the blue and blue-green portion of the visible spectrum up to approximately 520 nm. It reduces the excessive sensitivity of color infrared films for this spectral range, helps avoid a blue tint and differentiates colors more evenly. Filter factor depends upon the film sensitivity.
It's really meant for use in combination with infrared films, where it's desirable to reduce the transmittance of blue-green, blue, & violet (and of course UV) light. Cutoff at 520nm means right in the middle of the greens, so some green sensitivity will remain.
For digital work, prolly not a great choice.
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03/30/2005 08:19:02 PM · #6 |
What is recommended for the Rebel sensor? I realize it requires long exposures, but I also know that it is possible and I have been looking into IR shooting. Any help would be great.
Lee |
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03/30/2005 08:20:50 PM · #7 |
So the filter would have little effect on a digital sensor?
Message edited by author 2005-03-30 20:22:24.
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03/30/2005 08:34:28 PM · #8 |
| you would think it would be the same once desaturated :/ |
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03/30/2005 08:38:02 PM · #9 |
Originally posted by Fetor:
you would think it would be the same once desaturated :/ |
Same as infared?
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03/30/2005 08:41:58 PM · #10 |
Originally posted by Zap228:
Originally posted by Fetor:
you would think it would be the same once desaturated :/ |
Same as infared? |
i was refering to the previous post, but i think it wouldnt matter if it was b&w film or an image sensor, i would think it would look the same once it was desaturated, i know that the rebel doesnt have a b&w filter so yeah |
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03/30/2005 08:45:48 PM · #11 |
Originally posted by Fetor:
Originally posted by Zap228:
Originally posted by Fetor:
you would think it would be the same once desaturated :/ |
Same as infared? |
i was refering to the previous post, but i think it wouldnt matter if it was b&w film or an image sensor, i would think it would look the same once it was desaturated, i know that the rebel doesnt have a b&w filter so yeah |
Infrared COLOR films have a very strange response to light, to our eyes. This would not be a necessary filter for IR B/W work with film.
There are filters that transmit mostly in the IR spectrum, and they are designed for use with digital cameras with an IR option on the sensor, for true digital IR photography. This filter is notone of those. It's blocking certain components of light in the visual spectrum.
Robt.
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03/30/2005 08:52:00 PM · #12 |
I don't know how this filter will affect an image shot with a digital camera, but it will have an affect. I would suggest taking the camera off AWB and setting it to a certain white balence before using it so the camera isn't trying to compensate.
I have recently been think of getting a set of colored filters to test with one of my digital cameras under varied conditions. Too bad I just sold a good many of them.
If you do decide to try this, keep us posted as to how it comes out.
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03/30/2005 08:54:02 PM · #13 |
It should be roughly similar to shooting with a red filter, or a dark orange one, I'd think... I donno for sure though.
Robt.
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