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joangilabert / dslrdashboard

Automatically exported from code.google.com/p/dslrdashboard
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Histograms appear to be inaccurate #279

Open GoogleCodeExporter opened 8 years ago

GoogleCodeExporter commented 8 years ago 
I am using a Nikon D7000 and Samsung S3 with dslrdashboard installed. It is 
working fine and all functionality appears to be there. I can change settings, 
focus, take photos and download the resultant file.

If I set the dashboard to Camera Manual mode and set an exposure that is 
clearly under exposed, the exposure meter, bottom, centre, shows a minus ev 
confirming that the exposure is wrong. The displayed histograms, however, show 
a normally exposed shape, with the the tails of the curves approaching the 0 
and 255 axes as one might expect a "classic" exposure to appear.

I am turning the histograms on via Live View settings. Am I doing something 
wrong or am I misunderstanding the function. I have a photo of the screen which 
demonstrates this.

Thank you.

Clive

Original issue reported on code.google.com by clive...@gmail.com on 13 Jul 2014 at 10:36

GoogleCodeExporter commented 8 years ago 
The LV histogram is calculated from the LV image that is sent from the camera. 
As the LV image is not reflecting exactly the camera settings (shutter, 
aperture) the histogram will also not reflect those settings (think only the 
D800 LV reflects the shutter/aperture changes but not sure).

Original comment by hub...@gmail.com on 13 Jul 2014 at 11:56