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Reactive lighting [ANSWER]

Posted: Sun, 6th Jan 2008, 2:24pm

Post 1 of 10

pscamm

Force: 2225 | Joined: 5th Nov 2006 | Posts: 300

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Hi all,
Well, im having loads of fun with this new lightning engine but i've come across a problem or two that may need addressing, or, i may need some advice on with ref to also adding reactive lighting to go along with my lightning. Here is what i've done:
Got my background plate of my daft sister acting a little bit weird, ive added a lightning bolt to the clip where the origin is off screen and the destination seem's to have stuck to her finger *L*, ( that'll teach her for picking on me when i was a kid *LOL*), seriously though, happy as hell with the lightning full stop, but, now i want to add some 'Reactive Lighting' to 'the beast' to attempt a bash at more realism. What i did was searched on fxhome for a tutorial & there it was wink Duplicate the background plate so it's on top, add a freeform garbage matte to this layer in the shape where i want the reactive lighting to be, invert this mask, use the grading track / tools to brighten up this area and animate the garbage matte (breath) *L* - Ok, so it looks great and the tutorial was right and all is fine - But not quite sad - While looking happily at my results i thaught, i also need some reactive light 'there' too so in goes another garbage matte over 'there' but adding a second matte cancels out / hides the first one sad The only way i could get the second matte working was to move the first mattes 'transparency' slider to zero, and vice versa. They both wont show at the same time...GRRRrrrrrr

Is this something im missing/doing wrong ???

HELP !

Best Wishes All
pscamm
Posted: Sun, 6th Jan 2008, 11:10pm

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jrg2134

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I don't know much about garbage mattes but I do know that there is a button you can press to change a mask from a transparent mask to an opaque mask.

Try changing that. It should be under the mask shape attributes. You know, after you draw a mask you switch to animate mode and that locks the draw mode. Then you can add feather, invert the shape, change the transparency, and you can also change the type of mask (transparent/opaque).

I don't know if that helps but hopefully it does.

jrg2134
Posted: Mon, 7th Jan 2008, 3:50pm

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pscamm

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JRG,
Thanks for the attempted help there but i'd already tried that and it does'nt give the desired effect, doing that appears to make the whole plate/layer partially transparent and also spreads the grading i put on the layer all over instead of where i want it.
The following link is the tutorial that i followed:

http://fxhome.com/support/tutorials/view/25/Lighting+enhancements

Although in the tut it's not referred to as reactive lighting, thats exactly what it is. Found this tut after watching the following vid:

http://www.digitaljuice.com/djtv/segment_detail.asp?sid=210&sortby=&page=4&kwid=0&show=all_videos

visionlab actually does a great job of this reactive lighting thing but for some reason it wont allow a second mask to be added for applying the effect in more than one place, they just cancel eachother out sad .

Any feedback from the 'top men' would be greatfully appreciated *L* wink

paul
Posted: Mon, 7th Jan 2008, 5:07pm

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pscamm

Force: 2225 | Joined: 5th Nov 2006 | Posts: 300

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Ah HAAaaaa,
Just worked out where i was going wrong - For every seperate area in the scene where you want to add a reactive light source, create a seperate layer of the background plate for each one, then you can make as many as you like layered on top of each other.

God, that was'nt hard after all *LOL*

biggrin biggrin biggrin

pscamm
Posted: Mon, 7th Jan 2008, 5:14pm

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Simon K Jones

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FXhome Team Member

Rating: +1

JRG's on the right track.

Firstly, you don't need to duplicate the layer anymore. You can simply use a 'Grade object' to affect the layers below.

Apply a mask to the grade object to limit it to a specific area, and invert that mask so that it's selecting only the area you want to alter.

Then you can add another shape and switch it to 'opaque mask' to add it to the mask.
Posted: Tue, 8th Jan 2008, 3:39pm

Post 6 of 10

pscamm

Force: 2225 | Joined: 5th Nov 2006 | Posts: 300

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jrg & tarn,
Well, my previous ah Haaaa has just been replaced with another ah haaa cos i've just worked out what you both mean, and, im feeling a little bit silly here but hey, some things are not always that obvious.
I was was trying to mask using the garbage & grade tool's in my clips instead of adding an independent 'Grade Object' on the actual timeline. Now, using this added grade object it all works fine. Thanks

Cheers all
paul
Posted: Sat, 12th Jan 2008, 4:09am

Post 7 of 10

AquariunGuru

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Pscamm,

Would love to see you make a little tutorial on that lightening solution mate.

Cheers

Aqua
Posted: Mon, 14th Jan 2008, 12:51pm

Post 8 of 10

pscamm

Force: 2225 | Joined: 5th Nov 2006 | Posts: 300

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Aqua,
Would be more than happy to, but to do that effectivly and clearly i'd need to know how to capture a 'screenshot' from my screen (what software to use, resolution/size to capture etc) and how to attach the screenshots i created into one of these reply boxes. The internet definately isnt my strongest subject.

If anyone here can assist ill get on with it asap

Regards

paul
Posted: Mon, 14th Jan 2008, 12:57pm

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NickF

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For a screenshot, hit "PrtScr". Then open up Paint/Gimp/Photoshop and paste the image. Save as a JPG, upload to ImageShack/Photobucket/Personal webspace and post the links using the BBCode provided.
Posted: Tue, 15th Jan 2008, 2:11am

Post 10 of 10

pscamm

Force: 2225 | Joined: 5th Nov 2006 | Posts: 300

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Cheers Digerati,
Got the screen capture sorted, just worked out how the bbcode thing works for images, ill have a play & see what i can come up with as soon as i can.

Thanks for your help there

paul