How to create better photos by Dr David Sing Kong Yuen

15 Oct 2020.  During the Covid-19 pandemic, much construction and urbanisation activities were stopped. There was an increase in the sighting of wildlife by me in 2020 - 2021. This monitor lizard was spotted on a tree in Oct 2020. MONITOR LIZARDS IN YIO CHU KANG CRESCENT FOREST ORIENTAL GARDEN LIZARDS

28 Jun 2020 PHOTOGRAPHY TIPS: SPRAY AND PRAY " Why are you stressing me? " Kenneth Hutton, the retiree photographer was upset when I asked him to use the "spray and pray" technique to photograph a rare large black butterfly with a prominent bright yellow spot, fluttering across and away from us in a zig-zag flight path. It appeared a second time for a few seconds and disappeared into the secondary forest. The image shown here is what I saw. I had met Kenneth for the first time at Yio Chu Kang Crescent where he was photographing birds. "Shall I go to the other side of the tree trunk to get the lizard to move to your side?" Keith asked. This Oriental Garden Lizard would shift his position to hide just behind the tree trunk as I clicked my camera to take a photograph of him . This lizard would not disappear completely. He would show his head and eyed me. Curious. If I went nearer, he would shift further behind the tree, but always with his head v...

1 Jan 2021    DISPOSABLE FACE MASKS 1.    N95 respirators or equivalent - are the only face mask that can stop viral particles as small as 0.2 micron in diameter. The Covid-19 virus may be even smaller. They are regulated ones and fit very tightly to your face. The wearer finds it very hard to breathe and wear it for short periods of time, unless they can breathe through an attached tube. They are disposable. The most famous brand is 3M.             2. Non-medical N95 respirators are much cheaper and are varying in quality. Many can claim BFE (Bacterial Filtration Efficiency) of equal or more than 95%, but none can claim they can stop viral particles from airborne transmissions. 3. Surgical masks are usually 3-layered or 3-ply. The inner and outer layers enclose a centre filter layer. They are most popular with people as they are much cheaper than the non-medical N95 respirators. Few can filter particles as small as 0.2 micron in si...

UPDATE ON 4 JUN 2023. During the Covid-19 pandemic starting from April 2020, there are varieties of face mask designs for sale online. One of them is the N95 with respirator. Later in 2022, the filter respirator mask is not recommended as it can transmit Covid-19 from the wearer or to the wearer.   Washable PM2.5 Anti Haze Mask Breath Valve N95 Anti-dust Mouth Mask Activated Carbon Filter Respirator Description Specification Reviews (183) Main Features: Made with ultra-soft cotton This mask will keep safe your mouth by protecting from all dust,air polluted place,vehicles smoke,and sandy air The advanced reusable carbon activated cotton mouth mask cares for your skin keep fresh Our anti-pollution masks can be washed and reused The adjustable size of elasti...

Mon 3 Feb 20. Around 10 am Surprised to see the bright orange neck of lizard on the tree in the Forecourt Garden of The Explanade Singapore. Tree 1. Orange throat and neck ORIGINAL IMAGES The female lays from five to sixteen soft oval eggs, about 5/8 of an inch long, in hollows of trees, or in holes in the soil which they have burrowed, afterward covering them up.  The young appear in about eight or nine weeks. In a hot sunny day a solitary Bloodsucker may be seen on a twig or on a wall, basking in the sun, with mouth wide open. After a shower of rain, they are seen to come down on the ground and pick up the larva and small  insects  which fall from the trees during the showers. During the breeding season, the male's head and shoulders turns bright orange to crimson and his throat black. Males also turn red-headed after a successful battle with rivals. Both males and females have a crest from the head to nearly the tail, hence their other comm...

25 Jan 20 There are many seen in 2020 as this was the Covid-19 pandemic. No construction, deforestation or thermal fogging were done.