Not been on her a while for personal reasons. sorry about that
Now for the heading.
For ages I just could not figure out why doing a test video using a garden fence as the target the video had minor stuttering during panning.
Then just now it hit me so to speak. it is all down to hertz ( how many times per second the display is able to draw a new image )
My dell desktop 4k monitor works on 60 hertz and the Panasonic HC-X1500 from the manufactures is 50 hertz. there is luckily a different setting within the camcorder which is 59.95 a lot nearer to the monitor setting.
That10 hertz makes all the difference, no âstutteringâ and thinking back on it now that Sony I had
might have had the same issue.
Just looked at the sony spec and nowhere does it mention this.
So if thinking about getting a camcorder worth checking out this information first
in this video below (when it downloads) it is only my not so smooth panning which shows up not like before when each fence slat juddered
Video downloaded but being chcked by youtube focus speed canât be made faster. Oops just found that buried deep in the menu settings
before all I could think of was the ratio of frame rate to shutter speed of which you are aware of I presume. Why on earth the put Hertz information on monitors and TVâs but not on video recorders i donât know
takes a time to download the video as we have a very bad internet speed for this type of thing. youtube does not show the video quality either even when using Mpeg4 which is compatible . If i had videoed in MOV then the conversion would take even longer to download
oops should be ok now. a lot smoother panning now.
Having to discover and fix anything to do with making a video I have to do myself mainly.
Ok only our garden videos at the moment because when actually videoing away from home I want to get it right
Just been onto a video specific site and a person on there who is well into using Panasonic camcorders professionally didnât even have a clue about Frequency . He was on about PAL and NTSC.
in this case
PAL=UK
NTSC= USA
Pal and NTSC is about the number of lines on a screen
NTSC =525 interlaced lines and is displayed at a rate of 29.97 frames per second.
PAL= 625 interlaced lines and is displayed at a rate of 25 frames per second.
Frequency= The refresh rate of your display refers to how many times per second the display is able to draw a new image.
so the frequency is a totally different matter which he could not get to grips with.
To be honest, of all the videos I have watched on camcorders not one has even mentioned this, and I donât know why
compare the above video with this from another video recorder I had
the juddering is exagerated so much not even worth watching
Actually it is about the way colour is displayed, PAL is Phase Alternate Lines to over come a problem with the NTSC system where the colour changed according to the saturation ie a red bus would actually change hue when it went into shadow under a bridge for example.
The number of lines is irrelevant, Europe and Australia used to use 525 lines at 25fps or 50hz
The frequency has do do with the mains frequency in the respective countries dating back to the black and white days when the TV sets were locked to mains frequency to provide their interlaced pictures. In the UK the mains frequency is 50Hz in the US mains frequency is 60hz which provided two pictures scanned at 25fps and 30fps respectively
Even in the days of 405lines in the UK it was still scanned at 50hz with the screen being refreshed with alternate lines so two scans were required to provide one frame hence the 25fps
I should also add that the concept of âlinesâ is totally out dated, modern cameras and TV do not scan in that way at all but frame rate is a legacy of the mains frequency though frame rates of 50 and 60fps are in use on even YouTube these days.
Itâs all part of the human eyeâs persistence of vision, what we perceive as a moving picture would be seen, by a pigeon for example, as a slide show.
