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01/21/2009 01:18:14 PM · #1 |
I understand that if you have a screw on infrared (I just got the HOYA) filter that you have to manually set your white balance. Usually done by pointing it at grass. How do you do it in the wintertime? I wanna go play with it today if possible! I have a tripod for the long exposures.
Also when manually setting white balance, do you usually do it on M mode, and light meter at 0? |
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01/21/2009 02:49:58 PM · #2 |
with the filter attached, you have to correctly expose for the grass, (no blown highlights or black shadows) which may or may not be what your meter reads.
then you need to set this shot as your 'custom white balance'
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01/21/2009 03:46:25 PM · #3 |
Originally posted by tpbremer:
I understand that if you have a screw on infrared (I just got the HOYA) filter that you have to manually set your white balance. Usually done by pointing it at grass. How do you do it in the wintertime? I wanna go play with it today if possible! I have a tripod for the long exposures.
Also when manually setting white balance, do you usually do it on M mode, and light meter at 0? |
get some green grass when you get on your way, put it in a container to use as a WB aid. |
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01/21/2009 04:11:18 PM · #4 |
| So what do you do in N. Minnesota? Do we have to wait till spring? We haven't seen green grass since November. |
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01/21/2009 04:25:57 PM · #5 |
Originally posted by d56ranger:
So what do you do in N. Minnesota? Do we have to wait till spring? We haven't seen green grass since November. |
move to Oregon ;) |
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01/21/2009 07:00:04 PM · #6 |
We don't have green grass here in the winter either.
I've used a Hoya Gx1 (green filter) with a little success. Put on both filters (both my IR and green filters are screw on) point it at something white and do my custom WB. I think the Hoya is a little too bright green to work well, but I haven't found a better one- yet. |
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01/21/2009 07:29:33 PM · #7 |
Buy some lettuce or other leafy greens at the store. Put on a lens that will fill the frame with greens. Take the greens outside and set a white balance to it. It might be crazy enough to work, if not make a salad. :P
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01/21/2009 07:32:18 PM · #8 |
| Use a piece of indoor/outdoor green carpet. |
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01/21/2009 07:41:47 PM · #9 |
I use auto WB and then use the color temp slider in LR to make adjustments.
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01/21/2009 08:40:13 PM · #10 |
| take a picture of a lawn on your television or computer screen |
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01/22/2009 09:16:54 AM · #11 |
so... green is the thing.
is there an average color temp if shooting outdoors? I could just set it that way too.
Also, it seems to really mess up my light meter--what should an IR exposure look like out of camera? |
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01/22/2009 09:29:21 AM · #12 |
| It's like antything else, just watch your histogram and make sure it as close to the highlights side without clipping. You want you whites white, other wise you have gray foliage. AS for the white balance question, you can still point at dead grass since it will still be reflecting IR light, it's not really the color green that you are setting to but what reflects IR the most. I don't recall having a different look when white balancing off green grass or dead grass. |
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01/22/2009 10:27:55 AM · #13 |
Originally posted by trevytrev:
It's like antything else, just watch your histogram and make sure it as close to the highlights side without clipping. You want you whites white, other wise you have gray foliage. AS for the white balance question, you can still point at dead grass since it will still be reflecting IR light, it's not really the color green that you are setting to but what reflects IR the most. I don't recall having a different look when white balancing off green grass or dead grass. |
ah... interesting.... |
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