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01/12/2004 02:46:35 AM · #1 |
A few pictures I've taken recently have the highlights "blown out", meaning their very bright and contain no detail in the highlight areas, whereas the rest of the photo is OK.
Typically seems to happen with bright reflections off of the shinier surfaces in the subject. I've noticed that it prevents me from brightening up the rest of the photo in Photoshop (at least, within the challenge rules), since otherwise the highlights get even worse. So, it's been causing me a bit of grief in my post-processing :)
What's a good way to cure this? A filter on the lens? |
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01/12/2004 02:53:30 AM · #2 |
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01/12/2004 03:24:38 AM · #3 |
take 2 shots, one for the blown out areas, and one for the dark areas, and blend them in photoshop.
a polarizer only works on some surface, as I found out recently, doesn;t work on plastic lolly wrappers, but does on paper ones :/
can you show an example? |
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01/12/2004 03:46:59 AM · #4 |
| Another (extreme) option is a Light Tent |
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01/12/2004 03:56:46 AM · #5 |
It depends on the material that shows these blown-out highlights.
If it is plastic or something like that then it is usually mainly polarised light, so a polarisation filter should help.
If it is on metal, then it is not polarised and a polariser will not help. It is then a direct reflection from the lightsource. In that case carefully look where the reflection is coming from and then avoid a lightsource (or very light surface) in that area. Or, alternatively, brighten up/increase the light in the rest of the picture, the part that does not cause direct reflection, and then decrease exposure, so in relative terms the highlight does not jump out anymore.
For correction in PS you might find the curves command to be more suitable than the levels command in this case, you can brighten up the shadows or midtones, without severely increasing highlights.
Message edited by author 2004-01-12 04:07:20. |
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01/12/2004 03:58:34 AM · #6 |
Originally posted by cvt_:
take 2 shots, one for the blown out areas, and one for the dark areas, and blend them in photoshop.
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Bracketing is a a good idea if you have a lot of memory to spare:
1 shot at +EV
1 shot at =EV
1 shot at -EV
and upping your f# on each exposure.
Some higher end cameras will do this automatically. Also a camera with an in camera histogram would also help you decide if the contrast/brightness is sufficient. I believe the "Rebel" may have these features.
Message edited by author 2004-01-12 03:59:50.
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01/12/2004 04:06:35 AM · #7 |
| if its studio style shots try softning or reflecting the light with paper/cardboard |
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01/12/2004 05:22:12 AM · #8 |
If your camera has histograms on it (and it should) Luminous Landscape
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01/12/2004 05:23:48 AM · #9 |
Originally posted by cvt_:
take 2 shots, one for the blown out areas, and one for the dark areas, and blend them in photoshop. |
Or use raw and "overexpose" one version and "underexpose" another and blend.
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01/12/2004 06:56:39 AM · #10 |
Originally posted by mtreit:
A few pictures I've taken recently have the highlights "blown out", meaning their very bright and contain no detail in the highlight areas, whereas the rest of the photo is OK.
Typically seems to happen with bright reflections off of the shinier surfaces in the subject. I've noticed that it prevents me from brightening up the rest of the photo in Photoshop (at least, within the challenge rules), since otherwise the highlights get even worse. So, it's been causing me a bit of grief in my post-processing :)
What's a good way to cure this? A filter on the lens? |
Do you have an example you could post?
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01/12/2004 07:33:41 AM · #11 |
If you are talking about doing something DPC legal, then either work in curves(which I don't do too often) or go into the selective colors and work in the black, white and neutrals to help lighten/darken the pic. That's something I always do.
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01/12/2004 11:52:49 AM · #12 |
| One way to help overcome this might be to spot-meter on or near the brightest spot; this will under-expose the darker parts, but if it's not too dark overall, you can recover the details there by lightening with curves (my favorite adjustment). Specular highlights (like reflections off a chrome car bumper) will virtually always blow out; a polarizing filter can help with other bright surfaces. |
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