PAR vs Compact

[christian mann]

Hey,

 

a quick beginners questions...:

 

how much more "power" does a 4KW PAR have vs a 4KW Compact ? Can't find the relevant data online...

 

Thaaaaaanx

M

[Jay Young]

Compact has 96 footcandles at 45 feet on full flood

 

PAR has 135 footcandles at 45 feet on full flood

 

I found this information using the Arri Photometric calculator - and you can too: http://calc.arri.de/calculator

 

The reason, I think, is because the Compact has a wider beam angle (61-degrees) vs. the PAR (52-degrees).

 

The PAR is the more concentrated source, even at flood.

 

This smells like homework.

[Alexandros Angelopoulos Apostolos]

 

This smells like homework.

 

People really hate it if it’s homework. don’t they. Or perhaps they just need to point out that it’s homework. I wonder why that is? Does it bother you that much?

[Jay Young]

 

People really hate it if it’s homework. don’t they. Or perhaps they just need to point out that it’s homework. I wonder why that is? Does it bother you that much?

 

Doesn't really bother me, but I find learning what something is called (Photometeric Data) helps one remember it for future use.

 

Now chances are that I answered the specific question, the OP didn't actually learn anything - I am hoping he will follow that link and play with the program, learning about photometric data in the process.

[christian mann]

hey,

thanks! that does help. didn't know the app yet.

 

and I don't mind homework :)