EX resolution at 1080i? at DVinfo.net

Laurence Kingston · February 15th, 2008, 01:41 PM

Most 50i/60i cameras average the even and odd lines for an extra 6db of gain in interlaced modes. Does the EX1 do this as well?

David Lorente · February 15th, 2008, 02:41 PM

Yes, the EX1 does the 2-line averaging in 1080i modes. Apart from increasing sensitivity, this also reduces aliasing and flicker effects caused by interlacing.

By the way, on my old Betacam (a Sony DXC-537AP dockable camera), there's a switch called EVS that disables line averaging, which, know what? bingo! It increases vertical resolution and drops sensitivity by one stop. But the footage generated that way causes a such a noticeable flickering on sharp details that I have never used it (except for getting a sharper image of the resolution chart when adjusting the lens back-focus, it was best adjusted when the lines most flickered!).

I don't know if the EX1 has a similar setting to disable averaging, but the resulting footage will suffer of the same flickering than in her Betacam grandmother. Maybe it will be less apparent in HD than in SD video, the only way to know is experimenting (if an EVS-like setting exists on the EX1!).

Laurence Kingston · February 15th, 2008, 10:46 PM

Thanks for confirming that.

February 15th, 2008, 01:41 PM	#1
Laurence Kingston Major Player Join Date: Aug 2004 Location: Clermont, FL. Posts: 941	EX resolution at 1080i? Most 50i/60i cameras average the even and odd lines for an extra 6db of gain in interlaced modes. Does the EX1 do this as well?

February 15th, 2008, 02:41 PM	#2
David Lorente Regular Crew Join Date: Dec 2007 Location: Cuenca (Spain) Posts: 92	Yes, the EX1 does the 2-line averaging in 1080i modes. Apart from increasing sensitivity, this also reduces aliasing and flicker effects caused by interlacing. By the way, on my old Betacam (a Sony DXC-537AP dockable camera), there's a switch called EVS that disables line averaging, which, know what? bingo! It increases vertical resolution and drops sensitivity by one stop. But the footage generated that way causes a such a noticeable flickering on sharp details that I have never used it (except for getting a sharper image of the resolution chart when adjusting the lens back-focus, it was best adjusted when the lines most flickered!). I don't know if the EX1 has a similar setting to disable averaging, but the resulting footage will suffer of the same flickering than in her Betacam grandmother. Maybe it will be less apparent in HD than in SD video, the only way to know is experimenting (if an EVS-like setting exists on the EX1!). __________________ Wire telegraph is a kind of a very, very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Radio operates exactly the same way, but there is no cat. Last edited by David Lorente; February 15th, 2008 at 03:28 PM.

February 15th, 2008, 10:46 PM	#3
Laurence Kingston Major Player Join Date: Aug 2004 Location: Clermont, FL. Posts: 941	Thanks for confirming that.