My video picture always has a stripy pattern in the background. What can I do about it?
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 stabilised
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Microscope lighting not stabilised
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Very well stabilised |
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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:Canon EOS 5D Mark II / Nikon D3x / Canon EOS 7D / Canon EOS 550D / (Rebel T2i / Kiss X4 Digital) / Canon EOS 1D Mark IV / Canon EOS 500D / Digital Rebel T1i / Nikon D3S / Canon EOS 1Ds Mark III / Panasonic Lumix DMC-GH1 / Pentax K-7 / Nikon D300S / Nikon D700 / Nikon D3 / Panasonic Lumix DMC-G2 / Canon EOS 50D / Olympus E-30 / Nikon D300 / Olympus E-620 / Olympus E-3 / Olympus Pen E-P1 / Panasonic Lumix DMC-GF1 / Panasonic Lumix DMC-G10 / Olympus Pen E-P2 / Olympus Pen E-PL1 / Canon EOS 1D Mark III / Sony Alpha 450 / Olympus E-600 / Canon EOS 450D / Digital Rebel XSi / Olympus E-330 / Panasonic Lumix DMC-G1 / Nikon D5000 / Olympus E-520 / Olympus E-420 / Olympus E-450 / Canon EOS 1000D / Olympus E-510 / Olympus E-410 / Panasonic Lumix DMC-L10 / Pentax K20D / Sony Alpha 380 / Sony Alpha 550 /
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