The Olivon DCA is an essential accessory for anyone who uses a spotting scope for digiscoping. It is a camera adaptor for attaching the eyepiece of the spotting scope to SLR digital cameras or attach to the filter thread. Can be used with Olivon T64/T80/T90/T80ED/T90ED Spotting Scopes. This adaptor is designed for SLR digital cameras and requires a camera specific T2 mount.