It took me a while to understand the reason to the artefact at the curved end of the trombone slide.
It is caused by standard type household LED illumination in the restaurant. LEDs flicker at a frequency of 100 Hz. A human eye will not notice it though it may cause stress and pain.
Several flashes illuminated the picture as the slide moved while playing. The three different flashes are reflections from the
curved tube surface at three strictly different positions where mirror reflection takes place. The deformation of the slide bow itself shows a mesh of several exposures. The picture is useless for serious purposes.
What we need to learn is that LEDs do flash and depending on their quality, the flashing is more or less. Only high quality LEDs can be used for photography. In studio, you can make your choices but on the go, somebody else has already decided.
Do also consider the CRI –value for accurate colors. This is another story.
Use a shutter speed less the 1/100, if possible.
There’s also something like that with TL but then with different colors rolling over the image.
You didn’t use a rolling curtain?
Here the same effect in a more decent version.
Nikon D850, 24-120 f/4.
ISO 6 400, f/6,3, 1/80 s
zoom 58 mm
This image improves with the flicker - or what do you say?
