Photo of the month
We have some very talented photographers in the Quekett, and there are hundreds of their images in the Photography showcase and the Slide showcase in the password-protected Members’ area. This page allows everyone to see some examples of their work, including photos that have received Barnard Awards at our Annual Exhibition of Microscopy. Copyright in these images belongs to the photographers, so please do not copy them without permission; if you contact the Club we can put you in touch with the photographer.
Head of mosquito
Photographer: Julian Cremona
Subject: Head of a mosquito
Equipment: Vickers 10× objective mounted in a body cap attached to a series of extension tubes and a Canon EOS 7D Mark II. Magnification on sensor approximately 20×. Lighting was a twin macro flash. A StackShot was used to take a set of 190 images that were then stacked.
Radula of periwinkle
Photographer: Mark Papp
Subject: Palate (radula) of a periwinkle (marine gastropod mollusc, family Littorinidae) from an old slide.
Equipment: Wild M20 compound microscope with crossed polarisers, Plan Fluotar objective and Olympus 3.3× photo eyepiece, Canon EOS 700D camera.
Software: Stack of about 15 images.
Antheridia of Chara fragifera
Photographer: Chris Carter
Subject: A row of antheridia (male reproductive organs) of Chara fragifera Durieu, a rare stonewort from Cornwall that has separate male and female plants.
Equipment: Olympus CX41 compound microscope with ×10 semi-apochromatic objective, dark-ground illumination. C-mount PAXcam3 USB camera with Paxit image capture software.
Software: The image is made up of 30 sub-images: 5 horizontal stitched sections, each at 6 focus levels stacked with Helicon Focus. Necessary processing with Adobe Photoshop CS6.
Fruiting bodies of Pilobolus on dung
Photographer: Mike Crutchley
Subject: The fungus Pilobolus crystallinus (F. H. Wigg.) Tode on cow dung, showing fruiting bodies. This fungus is nicknamed ‘the dung cannon’ because it can shoot the spore capsule some distance to aid dispersal of the spores.
Seed cone of Lawson’s cypress
Photographer: Alan Wood
Subject: Seed cone of Lawson’s cypress (Chamaecyparis lawsoniana (A. Murray) Parl.); the cone is about 5 mm wide.
Equipment: Canon EOS 600D with 60 mm EF-S macro lens + Olympus 13 cm supplementary lens, lighting was 2 CF bulbs through a Kleenex diffuser.
Software: EOS Utility, Zerene Stacker (to combine 95 images), Photoshop Elements 11 (to adjust levels and sharpen)
Phantom midge larva (Chaoborus sp.)
Photographer: Graham Matthews
Subject: Musculature of phantom midge larva (Chaoborus sp.).
Technique: Crossed polarisers plus a retarder to add colours to the muscles, which are normally colourless.
Larval paddleworm on Phaeocystis colony
Photographer: Julian Cremona
Subject: Larva of a paddleworm stuck to the surface of a colony of the diatom Phaeocystis globosa Scherffel. These diatoms form a colony by secreting a ball of gelatinous slime with large numbers of diatoms over the surface. Taken at the Dale Fort Marine Microscopy Weekend in May 2016.
Equipment: Canon EOS 7D Mark II attached with several extension tubes to a 65mm MPE lens held vertically. The MPE lens was set on 5× magnification and with the extension tubes this would make it around 7×. Canon Twin macro flashes were used one above and one below the specimen but offset. A black card was below the stage so a translucent dark background resulted. The digital image was cleaned up with some cloning of detritus and slight adjustment of levels and curves in Lightroom.
Papillae on the surface of a cat tongue
Photographer: David Linstead
Subject: Two different types of papillae on the surface of a cat tongue, from a Victorian slide sold by Watson. Injected blood capillaries, longitudinal and circular muscle blocks and keratinised papillae are all clearly shown.
Equipment: DIC using a Wild ×10 0.45 Fluorite objective with a Nikon ×10 DIC prism on a Nikon Diaphot. Stitch of 26 images. Canon EOS 40D camera.
Corbicula of a bee
Photographer: Ray Sloss
Subject: The corbicula (or ‘pollen basket’ and ‘pollen press’) on the hind leg of a bee, from a slide made by Dennis Fullwood at Flatford Mill Field Centre in February 2016.
Equipment: Leitz PL ×6 objective and a ×2.5 relay lens, stack of 10 images.
Chromosomes in root tip of onion
How to view: To see this anaglyph 3D image properly, you need red/cyan glasses with red for your left eye. Suitable glasses are available cheaply on eBay.
Photographer: John Ward
Equipment: Zeiss ×100/1.25 objective and DIC
Merismopedia elegans A. Braun ex Kützing
Photographer: Tony Pattinson
Specimen: Merismopedia elegans A. Braun ex Kützing, rectangular colonial cyanobacteria found and photographed during the July 2015 Quekett excursion to the Basingstoke Canal.
Equipment: Olympus A 20× objective, 4× CTS eyepiece, 3 MP ScopeTek C-mount camera with a 25 mm Cosmicar lens mounted afocally.
Conjugating Paramecium – sex amongst the Protozoa!
Photographer: Wim van Egmond
DIC image showing conjugation in the protozoan Paramecium, a sexual phenomenon in which paramecia of compatible mating types fuse temporarily and exchange genetic material. During conjugation, the micronuclei of each conjugant divide by meiosis and the haploid gametes pass from one cell to the other. The gametes of each organism then fuse to form diploid micronuclei. The old macronuclei are destroyed, and new ones are developed from the new micronuclei.
Mallow pollen grain
Photographer: Alan Wood
Subject: Stained single grain of pollen of mallow (Malva sp.) from an NBS slide, diameter 150 µm
Equipment: Olympus SPlan 40× objective, NFK 2.5× photo eyepiece, Canon EOS 5D Mark II
Software: EOS Utility, Zerene Stacker (to combine 13 images), Photoshop Elements 11 (to adjust levels and sharpen)