Ricoh now sells “Grad ND” software for the latest Pentax DSLR camera models in the US: Premium Feature – Grad ND Feature Activation Key Premium Feature – Grad ND Feature Activation Key This is an “activation key” to use the Grad ND premium feature. This premium feature is not available on regular products. This activation … Continue reading Ricoh now sells “Grad ND” software for the latest Pentax DSLR camera models