Re: EX1R-video formats

There are also 8 billion reasons for using each, some technical, some aesthetic.

For example
720p60 or 1080i60 for sports. 1080i60 is also a bit more light sensitive if you need it.
1080p24 for cinematic frame rate and easy conversion to PAL 25 or NTSC i60 with pull down
720p24 for easy integration for over/undercrank such as p24/60
1080p30 for progressive look but with better temporal motion than p24 and it's easy integration with other NTSC compatible work.
720p30 seems a mildly odd bird but that also works for NTSC integration (without pull down) and still integrating with over/undercrank. I've actually used this for digital signage work.

Standard Def DV - almost useless to me unless you're doing ENG SD delivery and have no time to do a downconvert.

There's the XDCAM HD compatible format if you're integrating with that.

HDV is another almost useless thing to me but you'll stretch the card record times a bit and if you need HDV firewire out if HDMI or HD-SDI isn't possible in your workflow, it's there for you.

All my subjective opinions and you'll get many more from others.