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    predock
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Astera Titan/AX1 CCT profile

Hello, i'm looking over the Astera Titan fixture profiles and i notice that the CCT parameter is 0-255 and there's no way to reference actual Color Temperature. Working in film production its really important to be able to do this. For example the ARRI S60 profiles all reference CCT accurately, so this function would be really helpful. I could build my own and replace the displayed values with the correct range, but i'm weary that they will match up. i will try this tomorrow, check with a color meter, and report back. but as i understand CCT, it is logarithmic and non-linear so i think matching values wont work. The Astera app control has full CCT parameters that are accurate. so they have the capability. 

The same goes for the other Astera fixtures i work with: AX3/AX5

As a gaffer and low level programmer i know that the first thing a Gaffer is going to want to see across ALL of the fixtures on set is accurate, predictable, repeatable CCT. 

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  • 0

    Hi there,

    Would you be able to point me to the specific Astera profile you were discussing above and the manual for said fixture? I'd like to submit a profile update to the Eos team if this fixture profile is missing labeling that it should have. Thank you!

    Best,

    Therse

  • 0 in reply to Therese

    Hi Teresa, thank you so much for responding to me so quickly. here are the links to the manuals for the three different fixtures I'm working with. They are all made by astera. When I pull up the color temperature control in the moving light window and move it from minimum to maximum the values are 0 to 255.

    I put a Kelvin color meter on the fixture through the range of 0 to 255, and I got to color temperature of 1800k at the low end and 4000 k at the max. Which is way off. If you use the fixtures control app you get a range of 2500 to 6500, which the ETC profile should match.

    So not only are the values unreferenceable, they don't match the actual range of the fixture. 

    https://astera-led.com/ax5/

    https://astera-led.com/de/ax3/

    https://astera-led.com/titan/

    On each of the pages if you scroll down there's a downloads tab you open that and there's a manual link inside of it. Sorry there is no direct link to the manual that I can pull up on my phone.

  • 0 in reply to predock

    Hello,

    Great! I am testing these profiles out now. Do you happen to know if this issue is present across all modes of these profiles? If not, I will need to know what modes you are using when seeing this issue. Trying to recreate the problem on my end currently.

    Best,

    Therese

  • 0 in reply to Therese

    the DMX charts show this (screenshot from AX3 manual):

    according to that the color temperature range should be 2000K to 7100K. if the fixtures don't match this in real life that's one thing, but i think we should label the CCT range in the personality. it's linear after all so should be simple enough. UserMin 2000, UserMax 7100

  • 0 in reply to Therese

    they are persistent through all modes that have CCT parameters. all 3 lights cap at 4000k instead of 6500. and the FP1 Titan goes off the scale on the warmer/lower end of the Kelvin range.

    also, the ax3 and ax5 have a color mix parameter that is confusing. depending on the postion of Saturation, Color Mix, and Color Temp, they behave differently. 

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  • 0 in reply to Therese

    they are persistent through all modes that have CCT parameters. all 3 lights cap at 4000k instead of 6500. and the FP1 Titan goes off the scale on the warmer/lower end of the Kelvin range.

    also, the ax3 and ax5 have a color mix parameter that is confusing. depending on the postion of Saturation, Color Mix, and Color Temp, they behave differently. 

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