Sony BCT40HD  40 Minute HDCAM 1/2" Digital High Definition Video Cassettes (BCT-40HD, BCT 40HD)

Sony BCT40HD  40 Minute 1/2" Digital High Definition Video Cassettes, 1/2" Digital High Definition Video Cassettes, Ultra-Fine Metal Particles and New Calendaring Technology achieve High Carrier-to-Noise Ratio, High Reliability for the Rigors of Repeated Playback and Edits, Newly Developed Lubricant protects Tape Surface and maintains Optimum Contact with Tape Heads, An Aluminum-Silica Proctective Layer and an Anti-Oxidant Treatment around each of the Metal Particles allows for Long-Term Storage of Recorded Data, Special process used to minimize tape shrinkage ensuring high degree of tracking\precision after long storage and playback, 45dB Carrier to Noise ratio and low headwear offering superb digital performance, Metal Particles 1/2 the size of Digital Betacam particles for stable recording at HDCAM format's shortest wavelength of 0.49um, High degree of recording stability and tracking precision even after long periods of archiving.