Posts Tagged ‘Anisoptera’

Fulvous Forest Skimmer – Female

December 10th, 2010
by Krishna Mohan
Fulvous Forest Skimmer - Female

Fulvous Forest Skimmer - Female

I found these female Fulvous Forest Skimmer (Neurothemis fulvia) dragonfly roosting on a dry branch in our kitchen garden. Two of these female dragonflies were sitting there continuously in the same position for 6 days without a break. It was raining heavily during that period and I could get only a short time to photograph these beauties. They flew off on the 6th days and not to be seen since then. The position they were sitting was so awkward. To take good photograph in such a corner was impossible without disturbing their roost. So I could not get any frontal view of them. What was unusual with these specimens were that they lacked irregular transparent areas which are so characteristic of this type of dragonfly species.

Fulvous Forest Skimmer (Neurothemis fulvia) is a medium sized rusty colored dragonfly with transparent wing tips. Male is reddish brown where as the female is paler brown in color.

Fulvous Forest Skimmer Closeup

Fulvous Forest Skimmer Closeup

Male has a reddish brown face with eyes which are dark reddish brown above, golden brown below. Thorax, abdomen and legs are reddish brown. Wings are dark reddish brown with an irregular triangular transparent area at the tip of the wing. The wing spots are dark reddish brown.

Many forms of females are found. Color of head, thorax and abdomen paler than males or rusty brown. Wings are clear amber yellow with a dark ray extending to the tip in fore wing. Many of them have a irregular triangular transparent area at the tip of the wing. As I mentioned earlier these two specimens did not have those irregular transparent areas.

Fulvous Forest Skimmer - Female

Fulvous Forest Skimmer - Female

It is a dragonfly of wet forests. Usually perches on fallen logs and shrubs. A large number of them can be found together in canopy gaps and forest edges. However, during the wet season, they move out of forested areas to non-forested bits.

Fulvous Forest Skimmer - Female

Fulvous Forest Skimmer - Female

It breeds in marshes associated with forest streams and rivers. They are found throughout the year. However, large number can be seen between May-September.

Fulvous Forest Skimmer - Female

Fulvous Forest Skimmer - Female

EXIF info…
Camera: Canon EOS 5D Mark II
Lens: EF100mm f/2.8L Macro IS USM
Exposure Mode: Manual exposure
Exposure Time: 1/125 sec.
Exposure Bias: 0.0
Aperture (F Stop): f/14.0
ISO Used: 100
Flash Used: Flash fired, compulsory flash mode.
White Balance: Daylight
Focal Length: 100.0 mm
Metering Mode: Pattern
Date Time: 2010:10:03 12:04:27
GPS Location in Google Map:
13° 4' 2.2" N, 74° 59' 44.3" E, 127 m.a.s.l.
Copyright © Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com
EXIF info…
Camera: Canon EOS 5D Mark II
Lens: EF100mm f/2.8L Macro IS USM
Exposure Mode: Manual exposure
Exposure Time: 1/125 sec.
Exposure Bias: 0.0
Aperture (F Stop): f/14.0
ISO Used: 100
Flash Used: Flash fired, compulsory flash mode.
White Balance: Daylight
Focal Length: 100.0 mm
Metering Mode: Pattern
Date Time: 2010:10:03 12:22:10
GPS Location in Google Map:
13° 4' 2.2" N, 74° 59' 44.3" E, 127 m.a.s.l.
Copyright © Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com
EXIF info…
Camera: Canon EOS 5D Mark II
Lens: EF100mm f/2.8L Macro IS USM
Exposure Mode: Manual exposure
Exposure Time: 1/80 sec.
Exposure Bias: 0.0
Aperture (F Stop): f/9.0
ISO Used: 200
Flash Used: Flash fired, compulsory flash mode.
White Balance: Daylight
Focal Length: 100.0 mm
Metering Mode: Pattern
Date Time: 2010:10:03 12:23:37
GPS Location in Google Map:
13° 4' 2.2" N, 74° 59' 44.3" E, 127 m.a.s.l.
Copyright © Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com
EXIF info…
Camera: Canon EOS 5D Mark II
Lens: EF100mm f/2.8L Macro IS USM
Exposure Mode: Manual exposure
Exposure Time: 1/80 sec.
Exposure Bias: 0.0
Aperture (F Stop): f/9.0
ISO Used: 200
Flash Used: Flash fired, compulsory flash mode.
White Balance: Daylight
Focal Length: 100.0 mm
Metering Mode: Pattern
Date Time: 2010:10:03 12:23:46
GPS Location in Google Map:
13° 4' 2.2" N, 74° 59' 44.3" E, 127 m.a.s.l.
Copyright © Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com
EXIF info…
Camera: Canon EOS 5D Mark II
Lens: EF100mm f/2.8L Macro IS USM
Exposure Mode: Manual exposure
Exposure Time: 1/80 sec.
Exposure Bias: 0.0
Aperture (F Stop): f/9.0
ISO Used: 200
Flash Used: Flash fired, compulsory flash mode.
White Balance: Daylight
Focal Length: 100.0 mm
Metering Mode: Pattern
Date Time: 2010:10:03 12:24:05
GPS Location in Google Map:
13° 4' 2.2" N, 74° 59' 44.3" E, 127 m.a.s.l.
Copyright © Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com

Tags: , , , , , , , , , , , , , , , , ,
Posted in Nature, Photography, Wildlife | Comments (5)

Closeup with Canon EF 300mm f/2.8 L IS USM

June 23rd, 2010
by Krishna Mohan

Trying to go beyond my comfort zone has been my effort for last few months. I tried my hands in travel photography in my Lakshadweep island trip. Now I am trying my hands with my new lens Canon EF 300mm f/2.8 L IS USM. I bought this lens as I wanted a considerable reach for shooting birds. After trying out Canon EF 300mm f/4.0 L IS USM lens successfully for macro it was difficult to use Canon EF 300mm f/2.8 L IS USM. There were 2 main reasons. Minimum focusing distance of 300mm f/4 was 1.5meters with a magnification of 0.24x. With 300mm f/2.8 minimum focussing distance increased to 2.5 meters and the magnification decreased to 0.13x. I used Canon EF 2x II Extender to increase the Extenders do not affect the Minimum Focus Distance of the lens they are mounted behind, thus the Maximum Magnification of the lens is also multiplied by 2x. I got 600mm lens with 0.26x magnification which was great. If I need more magnification I need to add my Kenko extension tubes but I haven’t resorted to that yet.

Because the Canon EF 2x II Extender is multiplying the aberrations/flaws of the lens it is mounted behind by 2x, there will be noticeable degradation in image quality when using the 2x. Sharpness and contrast take a hit with all but the best lenses. Additional CA (Chromatic Aberration) is introduced as is slight barrel distortion, but vignetting is somewhat reduced. The best 2x results will only be made using a very sharp lens such as the Canon EF 300mm f/2.8 L IS USM Lens. I have tried this 2x Extender on my other lenses almost all of them have failed.

Female Crimson Marsh Glider (Trithemis aurora)

Female Crimson Marsh Glider (Trithemis aurora)

Crimson Marsh Glider (Trithemis aurora)
It is a species of dragonfly in the family Libellulidae.

It is a medium sized dragonfly that is commonly found in weedy tanks and ponds, marshes, channels, and slow flowing streams and rivers in the lowlands and mid-hills. It breeds in streams, rivers, canals, ponds and tanks. It is found commonly and widely distributed in India throughout the year.

The male of the species is distinctly different from the female.

The male has a reddish brown face, with eyes that are crimson above and brown on the sides. The thorax is red with a fine, purple pruinescence. The abdomen, the base of which is swollen, is crimson with a violet tinge. The wings are transparent with crimson venation and the base has a broad amber patch. The wing spots are a dark reddish-brown and the legs are black.

The female has an olivaceous or bright reddish-brown face with eyes that are purplish-brown above and grey below. The thorax is olivaceous with brown median and black lateral stripes. The abdomen is reddish-brown with median and lateral black markings. The black markings are confluent at the end of each segment and enclose a reddish-brown spot. The wings are transparent with brown tips. The venation is bright yellow to brown and basal amber markings are pale. The wing spots are a dark brown and the lags are dark grey with narrow yellow stripes.

Grey Pansy Butterfly (Junonia atlites)

Grey Pansy Butterfly (Junonia atlites)

Grey Pansy Butterfly (Junonia atlites)

Wingspan of 55-65 mm. A medium sized light gray butterfly with darker colored wing margins. The sexes are similar. The upper side is marked with a row of post-median ocelli on both wings. There is a series of short wavy bands hanging off the costal margin of the fore-wing. The underside ground color is much paler, and the hind wing has an oblique line running across the wing. The markings and the intensity of color on the undersides of this butterfly are quite variable; the dry season forms showing the lightest color and fewest markings.

It is a much more habitat specific species than the other pansies, inhabiting areas in the vicinity of water such as rice fields, canals, tanks and marshy areas. It is not plentiful but may be found throughout the year and is the least common of the pansies. It is seldom seen above 2500 feet elevation.

Its behavior is very similar to that of the other pansies except in egg laying. It will often lay eggs on plants above the waterline in rice fields or open water bodies. The larvae are capable of surviving a rise in water levels by moving to high ground or other host plants nearby with relative ease. Like the other pansies, it joins migratory flights.

Black Torrent Dart Damselfly (Dysphaea ethela)

Black Torrent Dart Damselfly (Dysphaea ethela)

Black Torrent Dart Damselfly (Dysphaea ethela)

A large black damselfly with amber coloured wings. Lives in torrential hill streams from 300-1000m ASL. This damselfly is rare and usually sits in the middle of streams on boulders or emergent twigs. If disturbed flies high up to riparian trees. Breeding: Not known. Flight season: June to December. Distribution: Western Ghats from Agastyamalai to Aghanashini river in Uttara Kannara district. This species is also known from the Eastern Ghats.

EXIF info…
Camera: Canon EOS 7D
Lens: EF300mm f/2.8L IS USM +2.0x
Exposure Mode: Auto exposure
Exposure Time: 1/1000 sec.
Exposure Bias: +1.0
Aperture (F Stop): f/5.6
ISO Used: 2000
Flash Used: Flash did not fire, compulsory flash mode.
White Balance: n.a.
Focal Length: 600.0 mm
Metering Mode: Pattern
Date Time: 2010:05:30 12:00:21
GPS Location in Google Map:
13° 28' 26.9" N, 75° 2' 19" E, 87 m.a.s.l.
Copyright © Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com
EXIF info…
Camera: Canon EOS 7D
Lens: EF300mm f/2.8L IS USM +2.0x
Exposure Mode: Auto exposure
Exposure Time: 1/1000 sec.
Exposure Bias: +0.5
Aperture (F Stop): f/5.6
ISO Used: 800
Flash Used: Flash did not fire, compulsory flash mode.
White Balance: n.a.
Focal Length: 600.0 mm
Metering Mode: Pattern
Date Time: 2010:05:30 12:05:09
GPS Location in Google Map:
unknown (no GPS data)
Copyright © Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com
EXIF info…
Camera: Canon EOS 7D
Lens: EF300mm f/2.8L IS USM +2.0x
Exposure Mode: Auto exposure
Exposure Time: 1/1000 sec.
Exposure Bias: 0.0
Aperture (F Stop): f/5.6
ISO Used: 3200
Flash Used: Flash did not fire, compulsory flash mode.
White Balance: 0
Focal Length: 600.0 mm
Metering Mode: Pattern
Date Time: 2010:05:30 12:44:10
GPS Location in Google Map:
unknown (no GPS data)
Copyright © Krishna Mohan
All rights Reserved. This Image may not be copied, reproduced, distributed, republished, downloaded, displayed, posted or trasmitted in any forms or by any means, including electronic, mechanical, photocopying & recording without my written permission. If you’d like to make usage request, just ask: drkrishi@drkrishi.com

Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,
Posted in Nature, Photography, Wildlife | Comments (6)