scan lines in my camera image
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- Posts: 3275
- Joined: Sun Mar 22, 2020 10:06 am
- Location: Winnipeg, Manitoba, Canada
scan lines in my camera image
When I use my main incandescent lamp powered by the AC converted to DC power or when I add an LED lamp for side-wise illumination powered by the USB, ( get horizontal scan lines in my camera image. These can be very disruptive. Has anyone had this problem and has anyone found a solution?
Re: scan lines in my camera image
It often happens with LED light. You might try to lower the exposure speed - expose for longer peridos. 1/15 s instead of 1/30 s, etc.
Re: scan lines in my camera image
Hi Don,
your incandescent lamp should be powered with current that is rectified and smoothed by a condensator - with proper DC power it doesn't flicker.
LEDs can go on and off in an instant an can flicker severely if not powered by smoothed DC. Sometimes LED lamps are powered just with rectified AC and they flicker extremely but just not quite visible by the eye because it happens so fast. Do you have a smartphone or camera with a high speed film mode like 120 fps or so? This could identify a flickering lamp. With your incandescent lamp it can have an effect whether you turn it up fully or let it run in dimmed mode.
Bob
your incandescent lamp should be powered with current that is rectified and smoothed by a condensator - with proper DC power it doesn't flicker.
LEDs can go on and off in an instant an can flicker severely if not powered by smoothed DC. Sometimes LED lamps are powered just with rectified AC and they flicker extremely but just not quite visible by the eye because it happens so fast. Do you have a smartphone or camera with a high speed film mode like 120 fps or so? This could identify a flickering lamp. With your incandescent lamp it can have an effect whether you turn it up fully or let it run in dimmed mode.
Bob
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- Posts: 3275
- Joined: Sun Mar 22, 2020 10:06 am
- Location: Winnipeg, Manitoba, Canada
Re: scan lines in my camera image
Thanks Hobbyist and Bob. I'll try messing with the software.