I have 3 PMW-EX3 and a Panasonic HS410 with AV-HS04-M7 optional card. All cams are shooting in 1080i. I use the M7 card to have a SD-SDI signal used for a live streaming on internet.
We can both shoot in 4:3 or 16:9.
- In 4:3, I use the down-converter of the M7 card and select the "Edge crop" option to have SD-SDI signal in 4:3
- In 16:9, I have a problem as I can't have a native 16:9 SD signal. The "Letter box" option is a 16:9 embedded in a 4:3 native format (so we have both black lines above, below and left & right).