LED step up to colour? how to get it smooth

If you are using LED fixtures at very low points and they are 8 bit fixtures you will get this.  One low tech fix for this is to buy ND gel and knock the intensity down with it so you can bring the fixtures up to a higher level and get better fades.  Depending on what application you are using them for you might try a .9 ND and that should give you a bit more head room for fades.

ND = Neutral Density Gel

If you are using LED fixtures at very low points and they are 8 bit fixtures you will get this.  One low tech fix for this is to buy ND gel and knock the intensity down with it so you can bring the fixtures up to a higher level and get better fades.  Depending on what application you are using them for you might try a .9 ND and that should give you a bit more head room for fades.

ND = Neutral Density Gel

You may know this already, but LED sources don't naturally dim, especially at the low end. LED do have variable intensities, so any natural looking dimming curve is a result of the fixture's firmware and circuitry smoothing things out. Different manufactures solve the dimming issue in different ways, ranging from highly responsive dimming, a sort of afterburn on going to zero like an incandescent (though many feel like a 2k fresnel and not an HPL), or simply a smoothing from one level to another (think MSpeed on a mover). Some models put cost effectiveness and punch over smooth dimming, making them the right tool if you need a lot of eye candy, but not ideal if you're focus is on what how the light reveals a performer or scenery. 

You may need to study how your fixture emulates smooth dimming. Many of the Chauvets have a mode for the dimming curve, which sometimes can have a DMX control. Sometimes moving a channel in a 0 count can be smoother than a slow fade, especially if a color is coming up from or down to 0. Often parts and auto follows can be your best friend. 

-Josh