4. A Selection of Images of Unicellular Organisms
By Spike Walker, UK.
Editor's note: Spike Walker, a well known and award winning British photomicrographer, has kindly suggested that Micscape can share a selection of images from his extensive portfolio.
The image selection from the CD supplied, resizing and captions (based on Spike's image names and email notes) was by David Walker, web page style by Ian Walker as used in Spike's Gallery 1 , Gallery 2 and Gallery 3.
'The main microscope bench in Spike's playpen' showing an impressive Zeiss line-up: an Axiomat, Photomicroscope III and two Ultraphots.
Five of the images below show the power of anoptral contrast; copies of two papers* on this less well known technique are on Keith Shaw's 'Microscope Group Archives' website.
*'Microscopic observations with anoptral contrast' by Alvar Wilska and 'Anoptral contrast microscopy' by M A Peshkov (English translation).
Thecamoeba - DIC
Spike remarks on the above image: "I took this in 1976 and it won the RMS Glauert Medal in 1982. The medal, of which I believe 7 were struck, is made of a particularly fine yellow gold and honoured Audrey Glauert, the first lady President of the RMS. Though it is 35 mm in diameter, it is only 2 or 3 mm thick and, because of the softness of the metal, is encapsulated in a large acrylic block."
Oxytricha, fission - anoptral contrast
Amoeba - anoptral contrast
Vorticella group - anoptral contrast
Trachelius - anoptral contrast
Euglena spirogyra - anoptral contrast
Actinosphaerium, binary fission - darkfield
Nebela sp - Jamin-Lebedeff interference contrast
Euplotes - Nomarski DIC
Radiolarian - Rheinberg
Comments to the author Spike Walker are welcomed.
Images © M
I Walker and must not be used without permission of the author.
All rights reserved.
The author's website www.the-ultraphot-shop.org.uk provides resources and spares for the Zeiss Ultraphot range.
Via 'Microworld Services', Spike Walker is a
consultant microscopist and photomicrographer.
Please contact the author via e-mail above for details.
Published in the June 2010 edition of Micscape.
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Micscape is the on-line monthly magazine of the Microscopy UK web site at Microscopy-UK