We can compare pictures given by Adobe plugin, Batik 1.6 or Opera 9

Adobe plugin and Batik 1.6 give often same result but we get other result with Opera 9

Example 1 :

We get a picture, transform it with feColorMatrix with type="luminanceToAlpha"
We light this new picture with feSpecularLighting or feDiffuseLighting
We compose result with original picture with feComposite ...

See result as PNG with Adobe plugin with Batik 1.6 and with Opera 9

Explication : result with feColorMatrix for type="luminanceToAlpha" is different - See intermediate results

Example 2 :

We create pattern, 
We light this picture with feSpecularLighting or feDiffuseLighting
We compose result with original pattern with feComposite ...

See result as PNG with Adobe plugin with Batik 1.6 and with Opera 9

Same with tiling of plane

See result as PNG with Adobe plugin with Batik 1.6 and with Opera 9

Explication : Lighting and feComposite give differences - See intermediate results

Example 3 :

We create picture with feTurbulence, 
We light this picture with feSpecularLighting or feDiffuseLighting
We compose result with original picture with feComposite ...

See result as PNG with Adobe plugin with Batik 1.6 and with Opera 9

Explication : Lighting and feComposite give differences - See intermediate results