Number of digits in exposure parameter

[denisot]

Hello there.
I couldn't find the info in this forum, so I start a new topic.
It seems that the lowest exposure adjustement I can write (and actually read from an .xmp sidecar file) is 0.01. Is there a way to modify this limit? The idea behind is that I plan to do timelapse movies for which the exposure of each frame should be adjusted finely to prevent any flicker.
Thanks for your help.
Cheers
denis

[afx]

Well, the adjustment granularity needs to be available in the code. That might not support anything lower (just because this is written as a decimal does not necessarily mean it is a decimal in the code).

You might want to look at plugins like bez, maybe they allow a finer granularity.

cheers
afx

[denisot]

Thanks for your quick reply AFX. I'll look into it.
Cheers

[denisot]

Hello.
I bring the solution to my problem, in case it might be useful to somebody else.
In fact ASP can read values from the .xmp sidecar file much more precise than the 2 digits values visible in the UI. I realized that by importing an image with a sidecar file where the exposure value was 0.001: the exposure edit box indicated 0.00 but I immediately exported my parameters to an xmp file (i.e. erase the xmp file I had used to import the image) and found that the exposure value in this new xmp file was still 0.001. So the limitation was in the UI settings.

In the file /opt/AfterShotPro/supportfiles/tools/Advanced/Exposure.ui, you can find the part related to the Exposure edit box:

Code: Select all

<widget class="QDoubleSpinBox" name="exposureval_edit">
     <property name="sizePolicy">
      <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
       <horstretch>1</horstretch>
       <verstretch>0</verstretch>
      </sizepolicy>
     </property>
     <property name="minimumSize">
      <size>
       <width>48</width>
       <height>20</height>
      </size>
     </property>
     <property name="maximumSize">
      <size>
       <width>48</width>
       <height>20</height>
      </size>
     </property>
     <property name="cursor">
      <cursorShape>IBeamCursor</cursorShape>
     </property>
     <property name="focusPolicy">
      <enum>Qt::StrongFocus</enum>
     </property>
     <property name="acceptDrops">
      <bool>true</bool>
     </property>
     <property name="alignment">
      <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
     </property>
     <property name="buttonSymbols">
      <enum>QAbstractSpinBox::NoButtons</enum>
     </property>
     <property name="minimum">
      <double>-3.000000000000000</double>
     </property>
     <property name="maximum">
      <double>3.000000000000000</double>
     </property>
     <property name="singleStep">
      <double>0.100000000000000</double>
     </property>
    </widget>

Where I added (just before the minimum and maximum settings):

Code: Select all

 <property name="decimals">
        <number>5</number>
     </property>

And I get the 5 digits precision I needed.

Cheers
denis

[afx]

Cool

cheers
afx