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Author Topic: good histogram = dark images in surf pics...  (Read 5404 times)
bjanes
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« Reply #60 on: March 23, 2014, 10:59:41 AM »
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So again, in this case, the development plays a critical role in the total picture.
So if you get a data point about clipping with Raw Digger but you want to use PV2012 (which has lots of improvements over 2003), what do you now do? Adjust exposure or leave it based on your development preferences?

I use PV2012 for development, but I still like to know the status of the raw file. It is not necessary to go back to PV2003--PV2010 with a linear tone curve and the proper baseline offset is sufficient for most purposes and these settings can be saved as a preset. However, ACR/LR always uses white balance, and Rawdigger is useful in difficult cases when the rendered image is clipped due to white balance and the raw channels are intact.

Bill
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ErikKaffehr
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« Reply #61 on: March 23, 2014, 11:03:30 AM »
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Hi,

I am highly skeptical about highlight recovery in any tool. Personally I don't think PV2012 does a good job, and I feel that avoiding channel clipping is a worthwhile effort.

I would wote for better histograms.

Just to say, I like Lightroom and PV2012 and it is a great product. It may even be that it does good highlight recovery, but I don't feel it is good enough for me. A real raw histogram would be nice and save a visit to RawDigger. Tools that you could trust would save a lot of time.

I would add that I am all in favour of ETTR but I think is perfectly OK to expose 1/2 stop below optimum.

Best regards
Erik





So what's the consensus of this automatic highlight recovery? Isn't this ACR taking two good channels and building data in the 3rd? That's been the case for far longer than PV2012 I believe, but prior to PV2012, the recovery was rather ugly.
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digitaldog
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« Reply #62 on: March 23, 2014, 12:11:27 PM »
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I use PV2012 for development, but I still like to know the status of the raw file. It is not necessary to go back to PV2003--PV2010 with a linear tone curve and the proper baseline offset is sufficient for most purposes and these settings can be saved as a preset. However, ACR/LR always uses white balance, and Rawdigger is useful in difficult cases when the rendered image is clipped due to white balance and the raw channels are intact.
No question that RD is a useful tool in analyzing the data prior to development which can vary. Well worth the $19.95 for the entry level offering. I'm suggesting that for the lesser color geek, gear head, it's not necessary if the goal is to expose and then develop that raw data. It would be useful to see the plots of all the control strips an E6 lab uses to control their process but it's not a requirement to nail your exposure and their development. You do need to run tests, no question. And I'd agree, while it's somewhat cool that there IS highlight recovery in ACR/LR in PV2012 that now actually works, where in the past it was quite ugly, ideally you would not clip any data in case you move to another form of development. As Erik says, it's probably much better and safer to be ˝ or ⅓ stop down than ⅓ stop over even with the recovery. Testing both exposure and development as a pair should give you a very good idea how to do this and the ETTR results should be far better than exposing incorrectly for the JPEG, the crux of this discussion. Lastly, having this true, raw histogram data on the camera is would be the best solution, why after all these years of discussing ETTR don't we have one on all our camera systems?
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Andrew Rodney
Author “Color Management for Photographers”
http://digitaldog.net/
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