General discussion

ACR after Baseline Exposure fix is not looking same as inside RawDigger

Submitted by PhotoMan on

Forums: 

Hello, i have followed the article "Deriving Hidden Baseline Exposure Compensation Applied by a Raw Converter" closely and my baseline exposure is 0.35 on all ISO levels (found using DNG method).

I have applied settings in ACR and its same as in article
Exposure = -1.35
Contrast = -33
Black = +25
Custom Curve

I tried both profiles Camera Standard and Adobe Default, still not looking same.

viewing non linear DNG from Sony ARW - what I am doing wrong ?

Submitted by deejjjaaaa on

Forums: 

Hi All

This raw file = https://www.imaging-resource.com/PRODS/sony-a7r-ii/A7R2hSLI000100NR0.ARW...

Converting to a NON linear DNG using Adobe DNG converter (v15.1.0.1329 - pretty recent one)

Opening this DNG in RawDigger (v1.4.6.761 PE on Win10x64)

And then it looks like a linear DNG though (but it is not !) - I am certainly missing something obvious in RD settings :- ( !!!

See the first animated GIF

Please advise, thank you

Histogram with no binning for non zero buckets

Submitted by JHeger on

Forums: 

I tried to make histograms from the RAWs of a Fuji T4, a white picture, all pixels overexposed, and a black picture with lens cap.

I would like to have the bucket size to be one for all non zero values. Is there a way to do this?

I tried linear x axix and non-linear x axis. With linear x axis and non auto the minimum bucket size is always reset to 32. Auto also does not always give buckets size one for non zero buckets. With the black picture it did but only about 2 million pixels were counted (sum of R, G,and B channels.)

Is there any setting I have missed so far?

R G B saturate at different rates on CCD sensor

Submitted by polyrhythm on

Forums: 

Hi, I wonder if anybody has encountered this in a camera sensor...I have a rather obscure cinema camera that uses a Kodak Interline CCD sensor.
I believe the sensor is this one: KAI-02150

The camera outputs 12-bit uncompressed DNGs.

I have done some testing with RawDigger on the native DNG files that camera renders. It seems that it does something unusual when it saturates.

As you can see on the below histogram, on a white patch that is overexposed, the sensor R and B channels saturate at 4005.
The G and G2 channels saturate at 4015.

Display/analysis of tiff files

Submitted by williwkl on

Forums: 

I am one hundred percent satisfied with RawDigger and use it for all my images before I start working with LR/PS. I use it mainly to control my ETTR exposure. For better tonal differentiation on the bright tonal values, I use profiles I created myself in Lightroom with a linear tone curve. After further processing in Photoshop and saving as a tiff file, I would now like to take a closer look at the tonal values. The histogram in Photoshop is unsuitable with 0 - 255 tonal values. I would like to have a tiff display with all tonal values and analysis options like in RawDigger.

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