Sunday, 20 November 2022

video feedback - elk elektroniks

 I was at Elk Electroniks on Sat and saw an amazing display of Video Feedback using some old 
analog monitors / cameras. 
Thanks to Troy for bringing these in.

The first few videos used a B/W monitor

Placing and object (such as my hand) between the camera and the monitor 
added even better effects.


This effect has been around for decades. In fact it was first demonstrated in the 1950s and was 
considered a nuisance until discovered by psychedelic visual artists and of course Sci-fi nuts
As a child I watched Dr Who and was mesmerized by the opening sequences.

Those early childhood experiences are looping back on me.

Video feedback is all about loops that occur when a video camera is pointed at its own 
playback video monitor.
There is a delay from camera to display and back.
The camera sees an image, processes it and feeds it back to the monitor, which by
that time has moved on at least 1 image ahead (or may be more).




I think, the greater the delay, the greater the feedback distortion.



and placing objects between deserves more experiments




One final Black/white
and then onto the colour




Many artists have used optical feedback. 
An example is Queen's music video for "Bohemian Rhapsody" (1975).



Below the monitor is a video processor (colour corrector) Sony XV-C900
It was used to adjust things like saturation, brightness, and contrast,


Check out more of Troy's work on YouTube
https://youtube.com/@troysvisualarts





-------------------------------------
Elk elektroniks holds regular meetings... about every 6 to 8 weeks.

Elk Elektronik - Shop 3, 266-268 Crown St Wollongong

Instagram

Check out more of Troy's work on YouTube
https://youtube.com/@troysvisualarts

No comments:

Post a Comment