For Base & Variation +/-    “Positive” means that the surrounding dichroic is etched away and the image stays dichroic, “Negative” refers to when the image is etched away and the surrounding dichroic is left standing.

For Base & Variation +/-    “Positive” means that the surrounding dichroic is etched away and the image stays dichroic, “Negative” refers to when the image is etched away and the surrounding dichroic is left standing.

For Base & Variation +/-    “Positive” means that the surrounding dichroic is etched away and the image stays dichroic, “Negative” refers to when the image is etched away and the surrounding dichroic is left standing.

For Base & Variation +/-    “Positive” means that the surrounding dichroic is etched away and the image stays dichroic, “Negative” refers to when the image is etched away and the surrounding dichroic is left standing.

For Base & Variation +/-    “Positive” means that the surrounding dichroic is etched away and the image stays dichroic, “Negative” refers to when the image is etched away and the surrounding dichroic is left standing.