[wvxvw]

import mx.transitions.Transition;
import mx.transitions.TransitionManager;
class mx.transitions.Treshold extends Transition {
	#include "Version.as"
	public var type:Object = Treshold;
	public var className:String = "Treshold";
	private var _colorControl:Color;
	function Treshold(content:MovieClip, transParams:Object, manager:TransitionManager) {
		this.init(content, transParams, manager);
	}
	function init(content:MovieClip, transParams:Object, manager:TransitionManager):Void {
		super.init(content, transParams, manager);
		this._colorControl = new Color(this._content);
	}
	private function _render(p:Number):Void {
		var t:Object = {};
		var bright:Number = 0;
		var cl:Object = this._colorControl.getTransform();
		bright = (p-.1)/.9*256;
		t.rb = t.gb=t.bb=bright;
		t.ra = cl.ra+(255-cl.ra)*p;
		t.ga = cl.ga+(255-cl.ga)*p;
		t.ba = cl.ba+(255-cl.ba)*p;
		this._colorControl.setTransform(t);
	}
}

Это мой вариант Photo-transition, попробуй, мб больше понравится =)