Folge Micro_Tech_Lab auf Facebook Folge Micro_Tech_Lab auf Twitter change language  change language  177

My video picture always has a stripy pattern in the background. What can I do about it?

Microscope lighting: Microscope lighting not stabilised

This effect is caused by an unstable or inadequately stabilised light source. The light “flickers” at a frequency of 50 or 100 Hz. These quick changes of light are not visible to the human eye, but they do interfere with video recordings. This results in disturbance, particularly when the number of images per second is low (under 30 images per second). Depending on the image frequency of the video camera there is also another stripe pattern. The automatic colour correction or the white balance of the video camera can further heighten this effect.

Possible solutions:
• Reduction in the intensity of the lighting (the stabilisation electronics work better with low power output)
• Activation of the “cancel flicker” mode (camera properties in the driver settings)
• Choice of a higher video camera recording frequency
• Deactivation of the automatic colour correction and the white balance
• Use of a microscope with a stabilised power supply
• Use of an externally stabilised source of light (e.g. light coupled in through a mirror)


Microscope lighting not stabilised

Microscope lighting not stabilised


Very well stabilised

Microscope lighting  Very well stabilised



Caution! This manual is protected by copyright. Unauthorised reproduction thereof, in whole or in part, is punishable by law. Only use with MICRO TECH LAB’s approval.

New LM Digital Adapter for: Sony Alpha 9 II (ILCE-9M2) / Sony Alpha 9 / Nikon D6 / Sony Alpha 7R IV / Canon EOS R5 with Canon Adapter EF-EOS R / Sony Alpha 7S II / Sony Alpha 7R III / Canon EOS R6 with Canon Adapter EF-EOS R / Nikon Z6 / Nikon Z6II / Sony Alpha 7R II / Nikon Z7 / Nikon Z7II / Canon EOS R with Canon Adapter EF-EOS R / Canon EOS Ra (Astro) with Canon Adapter EF-EOS R / Nikon Z5 / Sony Alpha 7C / Canon EOS RP with Canon Adapter EF-EOS R / Sony Alpha 7S / Canon EOS 1D X Mark III / Nikon Z50 / Nikon D850 / Canon EOS 1D X Mark II / Nikon D780 / Sony Alpha 7III / Nikon D5 / Sony Alpha 6600 / Sony Alpha 6400 / Sony Alpha 6100 / Canon EOS 1D X / Nikon D4s / Olympus OM-D E-M5 III / Canon EOS 90D / Canon EOS 5D Mark IV / Nikon D4 / Nikon D750 / Canon EOS 6D Mark II / Fujifilm X-T4 / Fujifilm X-T3 / Sony Alpha 6300 / Sony Alpha 6500 /