ies with soft shadow

[waaazoo]

Hello,

Is it possible to find out if soft shadow is possible when watching the ies data in wordpad or similar ?
For what data should I search ?

regards,

[Neilg]

I did some research into this a while ago, you're in luck.

open the ies file and you'll see this at the start: (important bit bolded)
"IESNA:LM-63-2002
[TEST] U100000_0
[TESTLAB] ERCO Leuchten GmbH
[ISSUEDATE] 20-11-2007
[MANUFAC] ERCO Leuchten GmbH
[LUMCAT] 22405023
[LUMINAIRE] LC Downlight
[LAMPCAT] MRC16 50W 10°
TILT=NONE
1 900 1 19 1 1 2 -0.051 -0.051 0

thats the scale of the light. for some reason, they're all set to minus values on most files i see - which max doesnt read properly.
the first is units (1 is feet, 2 is meters)
the last 3 are width, length and height.

[olivervfx]

so by making those postive and larger range, you get soft shadows?

I never got them to work in vray for maya

O

[paulDryzen]

The VRay IES lights have a switch for the softshadows. The defaulat value is "OFF".

Hope this helps.

Paul

[Neilg]

Doesnt matter if it's on or off - a lot of ones we have are in minus values (all the erco ones, etc) and they'll still come out sharp.

[olivervfx]

So how would you solve that?

What parameter would you change, or up in the IES file... Very curious now. I love the technique and like to use it.

[3DMK]

I did some research into this a while ago, you're in luck.

open the ies file and you'll see this at the start: (important bit bolded)
"IESNA:LM-63-2002
[TEST] U100000_0
[TESTLAB] ERCO Leuchten GmbH
[ISSUEDATE] 20-11-2007
[MANUFAC] ERCO Leuchten GmbH
[LUMCAT] 22405023
[LUMINAIRE] LC Downlight
[LAMPCAT] MRC16 50W 10°
TILT=NONE
1 900 1 19 1 1 2 -0.051 -0.051 0

thats the scale of the light. for some reason, they're all set to minus values on most files i see - which max doesnt read properly.
the first is units (1 is feet, 2 is meters)
the last 3 are width, length and height.

Thanks HEAPS for this invaluable info!!!!!!!!

I'll buy you a beer or 2 for that!!!!

Thanks again

Jamie

[waaazoo]

WOW !!! thank you very much cubiclegangster.
I wasn't hoping for such a great answer.... Couldn't test right now but i'm hoping to get now soft shadows out of my IES files changing the size parameters.
I'll owe you a Beer too

I did some research into this a while ago, you're in luck.

open the ies file and you'll see this at the start: (important bit bolded)
"IESNA:LM-63-2002
[TEST] U100000_0
[TESTLAB] ERCO Leuchten GmbH
[ISSUEDATE] 20-11-2007
[MANUFAC] ERCO Leuchten GmbH
[LUMCAT] 22405023
[LUMINAIRE] LC Downlight
[LAMPCAT] MRC16 50W 10°
TILT=NONE
1 900 1 19 1 1 2 -0.051 -0.051 0

thats the scale of the light. for some reason, they're all set to minus values on most files i see - which max doesnt read properly.
the first is units (1 is feet, 2 is meters)
the last 3 are width, length and height.

[waaazoo]

Do you know if it's possible to add that information, if it's not in the IES file ?

regards