It is important to note that you’ll be able capture using firewire, but AJA offers some unique options to you for output. Is frame accurate or color accurate monitoring important to you? Because you can’t do it over firewire.
Both the Kona LH and Kona 3 actually have a hardware scaler built into the cards, so they offload the processing power needed to decompress and playback scaled formats (like DVCProHD) from the processor and allowing for more streams, effects, transitions, etc. This is unique to AJA’s line of cards.
This is also very important if you ever try to ingest and transcode footage that didn’t originate on DVCProHD hardware to DVCProHD (ie upconverting Beta footage or transcoding an HDV camera).
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-Mike