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08/22/2006 04:28:15 PM · #1 |
Hey all,
I keep getting red "burnt out" highlights when I convert RAW to JPG (particularly in water scenes). The RAW files look fine, but when saved to JPG it occurs. Any ideas? |
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08/22/2006 04:35:04 PM · #2 |
You think you could post an example for us to check out. Not exactly sure what you're describing.
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08/22/2006 04:35:24 PM · #3 |
| What are you using to convert and how much compression are you doing during the conversion? In Photoshop you can have verying amounts of compression when converting or saving a JPEG, I do as little compression as I can get away with. |
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08/22/2006 04:37:21 PM · #4 |
| It could be your conversion from 16bit (12bit really) to 8bit color. |
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08/22/2006 04:44:33 PM · #5 |
Sheez...nuffin wrong with red highlights on JPG's.
J/K...back to the normal scheduled programme.
The only thing I can think of is the levels are pushed to high.
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08/22/2006 04:50:27 PM · #6 |
Originally posted by Judi:
Sheez...nuffin wrong with red highlights on JPG's.
J/K...back to the normal scheduled programme.
The only thing I can think of is the levels are pushed to high. |
There you go showing off those red highlights again!
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08/22/2006 04:55:12 PM · #7 |
Originally posted by scarbrd:
There you go showing off those red highlights again! |
Fine...I will go and sit in the corner and shaddup!
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08/22/2006 05:02:26 PM · #8 |
Originally posted by Judi:
Originally posted by scarbrd:
There you go showing off those red highlights again! |
Fine...I will go and sit in the corner and shaddup! |
I can't wait to see the picture!
OK, back to your thread.
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08/22/2006 05:27:49 PM · #9 |
| Which RAW converter are yo using? You should be able to monitor the histogram while making adjustments in RAW conversion. The histogram will tell you if anything's going to be blown if you convert with the settings in place at that moment. If you see a spike at the right edge of the histogram, move the exposure slider downward. That will work, to an extent. You will be able to recover some of the highlight information. Different converters handle this differently. Adobe Camera Raw (ACR) probably does the best job; it tries to recover color and luminosity information, whereas Canon Digital Photo Professional (DPP) only recovers luminosity info (shades of gray). Be aware that the recovered higlights can have a color cast under certain circumstances. |
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08/22/2006 06:43:13 PM · #10 |
It depends largely on your color space as well. When you're converting your raw, watch your histogram. If you're clipping (spikes on the right), try a larger color space (Adobe RGB or ProPhoto RGB). Do your editing and convert to your final color space at the end.
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08/22/2006 08:39:08 PM · #11 |
ok, here is one EXTREME example! Here are two links, one is a screen image of the RAW file opened with Adobe PS CS2, the other is the saved JPG from that same RAW file. They are around 180K each.
RAW Image
JPEG Image
In the RAW photo you can see the settings I generally use. Look at the left side of the picture on both.
Judi - LOL!
Message edited by author 2006-08-22 20:40:05. |
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08/22/2006 09:13:20 PM · #12 |
The sun reflected off of water like that is nearly impossible *not* to blow out. The highlights can be may stops brighter than the adjacent water. Don't worry about them.
It does look like there are some additional areas where the red channel is saturated. Those areas are almost certainly not shown as blown on the JPEG, because only one channel saturated (luminosity is not maxed because it's a function of all three channels).
The shot is quite warm in tone, if you don't want to decrease the general exposure any further in RAW conversion, try cooling it off a little iwth the WB slider. That will bring down the reds. An overall slight saturation reduction would be another way to tame those reds. |
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08/22/2006 09:15:06 PM · #13 |
Originally posted by kirbic:
An overall slight saturation reduction would be another way to tame those reds. |
How about this one?
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08/22/2006 09:49:40 PM · #14 |
Originally posted by fotomann_forever:
Originally posted by kirbic:
An overall slight saturation reduction would be another way to tame those reds. |
How about this one?
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I cannot be tamed...and never will be!
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08/22/2006 11:09:59 PM · #15 |
| Yeah I'm not worried about the highlights really, just the massive red tint that occurs when converted to JPEG. This isn't supposed to be a "portfolio" shot or anything, just the best one I could find to show the red/pink tinting. Thanks for the advice! |
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08/24/2006 04:55:56 AM · #16 |
looking at your histogram in the RAW converter you have a massive spike of red channel in your highlights!
what does the file look like when you've converted and its in Photoshop?
what colour space are you using when saving? |
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