Brightness / Dimming Curve

[jb1677]

Trying to adjust brightness of individual models on a single port of a PiCap. Seems like the xlights dimming curve feature will do this but I seem to be having 2 problems:

1 - I make changes, re-render/save and then xfer the sequence but the change seems to not always take affect. I seem to have to mess with the brightness setting. For example to test I changed one model to -100 which resulted it in being off. I set it back to 0 and it did NOT come on, I had to go to +100 to get it back on when playing the sequence.  I am probably not doing something right.

2 - Speaking of +100 - What do positive values for "brightness" do in single brightness/gamma, default is 0 (which I assumed was not dimmed). How can you get brighter than this?

(may be time to just get a controller with more ports to just handle dimming there)

[keithsw1111]

You have to rerender after changing dimming curves.


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[Gilrock]

2 - Speaking of +100 - What do positive values for "brightness" do in single brightness/gamma, default is 0 (which I assumed was not dimmed). How can you get brighter than this?

I believe +100 would tell it to double the values of the colors in each channel but it would clamp at 255.  So if red was 50 it would double to 100 but if red was 175 it would clamp at 255.

[JimmieNC]

I am having the same issue with trying to dim models.  Dimming curve does not seem to be working.

[bwinter]

I am having the same issue with trying to dim models.  Dimming curve does not seem to be working.

Anecdotal evidence:  my sequences from last year (where I adjusted my floods brightness in xlights), are now too bright this year (re-rendered this year).  I’ve had to dim them in FPP.

I didn’t change/alter anything, just the-rendered to re-upload.

This leads me to think something is off with my dimming curves too

[Gilrock]

I am having the same issue with trying to dim models.  Dimming curve does not seem to be working.

Well its your first post so I don't know if you know what to expect.  We reverse the curve when we display the preview so you are not going to see the effect on the computer.  Otherwise things are too dim to see during the preview playback.

[Gilrock]

I am having the same issue with trying to dim models.  Dimming curve does not seem to be working.

Anecdotal evidence:  my sequences from last year (where I adjusted my floods brightness in xlights), are now too bright this year (re-rendered this year).  I’ve had to dim them in FPP.

I didn’t change/alter anything, just the-rendered to re-upload.

This leads me to think something is off with my dimming curves too

Well provide a sequence so we can prove it.  I've seen too many times where someone says oh yeah I changed that one thing after we spend 2 hours troubleshooting.

[JimmieNC]

I would like to see a sequence with dimming curve with reduced brightness.
One question is there anything on the effect that would over write the model dimming.

[keithsw1111]

I would like to see a sequence with dimming curve with reduced brightness.
One question is there anything on the effect that would over write the model dimming.

That’s not how it works. If you think there is a problem YOU post something that shows the problem.


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[Gilrock]

I would like to see a sequence with dimming curve with reduced brightness.
One question is there anything on the effect that would over write the model dimming.

Yes Brightness can be increased to 400% which can counteract dimming.