Camera Historgram vs. Adobe Bridge Camera Raw

[extrememc]

I took some test picture and view them in my historgram and it didn't
show highlights blow out, so I open it up in Adobe and it showed some
blown highlights that the camera didn't reveal. Could there be
something wrong with the camera?

[Di-MC]

Camera histogram is hardware based and does a pretty good analysis to help you decide whether you should adjust the exposure and take a new shot. Adobe histogram includes much more complex algorithm and could certainly pick-up more due to its sensitivity. Unless they are worlds apart (which I would doubt) I wouldn't worry too much.

[mizuno]

Adobe Bridge sometimes applies some some default RAW conversion settings, perhaps this was the case.

[ofdphoto]

Yep the Adobe blowout will depend on the settings picked in the RAW converter.

[malla1962]

The in camera historgram is based on that little jpeg you look at in the viewfinder.

[Glenn NK]

I've observed something that may or may not be related to the OP's question, and I would welcome some comments from others:

Using the histogram in DPP, I've taken a number of shots wherein the histogram is clipped (at the top). Under "White balance adjustment", every shot defaults to "Shot settings".

Then if the DPP "White balance adjustment" is changed to "Daylight" (for example, or any other setting), quite often the histogram is not clipped at any point, and the shape of the histogram curve is completely changed - with peaks at different locations. This effect is much more pronounced (or so it seems) when the original shot has some considerable portion in the shade or dark areas.

All files are RAW, and the WB settings were AWB.

Glenn NK

[Quad]

Originally Posted by Glenn NK

I've observed something that may or may not be related to the OP's question, and I would welcome some comments from others:

Using the histogram in DPP, I've taken a number of shots wherein the histogram is clipped (at the top). Under "White balance adjustment", every shot defaults to "Shot settings".

Then if the DPP "White balance adjustment" is changed to "Daylight" (for example, or any other setting), quite often the histogram is not clipped at any point, and the shape of the histogram curve is completely changed - with peaks at different locations. This effect is much more pronounced (or so it seems) when the original shot has some considerable portion in the shade or dark areas.

All files are RAW, and the WB settings were AWB.

Glenn NK

The clipping does not occur at the top. The histogram (in terms of clipping) is only too far right or left indicating lost shadow or highlight information. It may go right up to the top or past that is only a pixel count of how many pixels are at that brightness location. If you change white balance then there will be a redistribution of some of the colours and so the pixel count at one location will change. You will see this better if you change to looking at a RGB histogram.

Likely the OP found linarms' and mizuno's comments relevant.