My microscope images always have a circular pattern on them. What am I doing wrong?
Is the LM digital adapter faulty?
The phenomenon you are describing often occurs when using digital
cameras with fixed, inbuilt zoom lenses. The reason for this has
nothing to do with either the microscope itself or the LM digital
adapter that is being used. It is far more likely to result from small
artefacts on the lens of the camera, which are caused when the lenses
are being produced. In general photography and macrophotography, these
flaws are not visible; they can only be seen in parallel light paths in
optical instruments.
Often, this phenomenon only appears after
a certain amount of time. Sometimes plastic lenses are used in compact
cameras, which are aged by UV light and other environmental influences.
Since it is unfortunately not possible with compact cameras to exchange
the lens, there is also no possibility to improve the image quality.
The only thing that can be tried is to see whether a shorter focal
length of the camera lens lessens the visibility of this circular
pattern.
For professional work in microscopy we therefore recommend using digital single lens reflex cameras with Live View function.
A detailed discussion of this subject can be found at:
http://www.microscopy-uk.org.uk/mag/imgjan04/coolpix-artefact-report.pdf [ Artefacts in Photomicrographs caused by Nikon Digital Cameras, Models Coolpix 990, 995 and 4500]
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 1D X / Nikon D4 / Canon EOS 1D Mark IV / Canon EOS 60D / Canon EOS 600D / Sony NEX-5N / Nikon D3S / Canon EOS 5D Mark II / Canon EOS 7D / Canon EOS 550D / Rebel T2i / Kiss X4 Digital / Pentax K-5 / Sony Alpha 55 / Sony Alpha 580 / Sony NEX-C3 / Sony NEX-7 / Sony Alpha 65V / Sony Alpha 77V / Nikon D3x / Canon EOS 1100D / Nikon D7000 / Sony Alpha 33 / Sony NEX-5 / Sony NEX-3 / Sony Alpha 35 / Olympus E-5 / Pentax K-r / Canon EOS 1D Mark III / Nikon D5100 / Nikon D700 / Nikon D3 / Panasonic Lumix DMC-GX1 / Olympus E-30 / Olympus E-3 / Olympus E-620 / Canon EOS 1Ds Mark III / Canon EOS 500D / Digital Rebel T1i / Sony NEX VG10 / Olympus E-600 / Nikon D300S / Panasonic Lumix DMC-G2 / Pentax K-x /
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