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 5D Mark II / Canon EOS 60D / Nikon D3x / Canon EOS 7D / Canon EOS 550D / (Rebel T2i / Kiss X4 Digital) / Canon EOS 1D Mark IV / Sony Alpha 55 / Sony Alpha 580 / Canon EOS 500D / Digital Rebel T1i / Nikon D3S / Sony Alpha 33 / Sony Alpha 560 / 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 /
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