ATEM Production Studio 4K The ATEM Production Studio 4K can be used for productions in professional broadcast quality – Connect up to 8 video cameras with SD, HD or Ultra HD 4K, hard drive recorder or computer. The device has all the features you would expect from a professional mixer – Downstream keyer – the world’s first 4K video connections for 6G-SDI and HDMI – Downconversion 4K to HD – 10 input x 2 channel mixer – Adjustable on/off/audio follow video – Level and tone control. We would be happy to trade in your used camera. You will receive an invoice from the speciali.