Hi Teco,
I am not sure if you are just simply referring to OPOS when you said "OPOS Camera", and if so, you can physically look at the cutting head to determine whether or not the machine has OPOS. The OPOS is mounted on the right side of the cutting head under the head cover and looks like a small lens(I tried uploading a photo but it didn't work).
If you were actually referring to adding OPOS Cam to this machine, unfortunately that is not possible. The OPOS Cam is a factory install only available on the S2T140(54") and S2T160(64") models. It cannot be added to any other models, even S2's, after the fact.
Please let me know if you have any questions regarding this.
Best regards,
Phil Johnson
Summa Inc.