Closed mxz2013 closed 11 months ago
Since rawpy is based on libraw, it might be worth seeing if you can achieve your desired result directly with the dcraw tool. See https://www.libraw.org/download. If not, then it's not something that can be addressed here.
I have a question concerning how to take into account the "Exposure Compensation" in the raw when converting the raw to a JPG image. The use case is when I have a relatively darker raw which was taken as "Exposure Compensation = -2 EV", then even if I put exp_shift = 8 (3 stops lighter), the final JPG still looks darker.
I load the same raw to the darktable and try to get similar results as what rawpy gives, I realize 2 things, first, the darktable can allow me to add 4 EV exposure, and the second thing is it allows me to compensate the camera exposure.
Thus my question is how can I have a JPG with more exposure boosting from rawpy? Is there a way to compensate the camera exposure in rawpy?
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Hi,have you solved this?I'm also confused about the ‘exposure adjustment’ in Adobe Camera Raw,And I found that apply a simple multiple(such as -1EV),the result is not the simple 1/2 of original raw data,not a linear relationship.
And if I make the original raw data times 1/2 ,and then apply the rawpy‘s postprocess,the rusult‘s color is really casted,I don‘t know why.
I have a question concerning how to take into account the "Exposure Compensation" in the raw when converting the raw to a JPG image. The use case is when I have a relatively darker raw which was taken as "Exposure Compensation = -2 EV", then even if I put exp_shift = 8 (3 stops lighter), the final JPG still looks darker.
I load the same raw to the darktable and try to get similar results as what rawpy gives, I realize 2 things, first, the darktable can allow me to add 4 EV exposure, and the second thing is it allows me to compensate the camera exposure.
Thus my question is how can I have a JPG with more exposure boosting from rawpy? Is there a way to compensate the camera exposure in rawpy?