judder? jerkiness? lagging?

[laprius]

Hey all, first time poster.

Had the camera for a few days now, and getting to know it a little better. Have setting on PF25 (PAL here) and cine etc, but have noticed when there are reasonable rapid pans (not fast fast, but certainly not snail's pace) there is a lot of lag in the picture on playback, also noticed that playing back where there is a white area on a dark background (eg white sticker on a dark green surface or mortar in brickwork) it artifacts or severly lags.

I originally noticed this playing back on an LCD tv via HDMI (so I think the LCD may be a part of this) capturing the scene on FC you don't get the artifacts with the whites on dark sections, but it seems to be very laggy, and it is properly capturing at 25fps and playing back at that speed.

I am wondering if this is a tape issue? that the "reasonable" mini DV tapes I am using can't keep up with the density of information required. By reasonable I mean just standard DV tapes (JVC , TDK and FUJI) I haven't got access to premium quality tapes until later this week.

Or am I just pushing the camera too hard? I am taking it to extremes (lots of lighting changes from shadow to light etc) making sure it can keep up...

Any input or pointers would be very very much appreciated :D

Cheers

Lap

[Worley]

This is an artifact of the cmos technology used in the HV20, and it's known as Rolling Shutter.

Check this thread: http://www.hv20.com/showthread.php?t=124

[laprius]

Many thankyous. I guess my pans will have to be ultra-slow with the steady then ;)

[Worley]

Don't pan at great speed, but if you must, don't use the progressive mode (25p) and use a slower shutter speed. 1/50 should do the trick.

[duketh]

can us PALians do the equivilent 60i convert to 24p @ 40% speed?
so we can do a nice interlaced pan at a normal speed and then slow it down and deinterlace it?