Iris sibirica 'Tropic night' flowers [UV]

Iris sibirica 'Tropic night' flowers [UV]

Description

Title:
Iris sibirica 'Tropic night' flowers [UV]
Caption / Description:

Ultraviolet photograph of flowers of the Iris 'Tropic Night', a cultivar of the Siberian Iris (Iris sibirica). There are two flowers in this photo, the newer one on the right above the older one on the left.

Iris sibirica 'Tropic Night' has purple flowers, 4-7 cm in diameter, with a veined yellow throat. The flowers are borne on a tall leafless stem.

In ultraviolet the flower appears quite different to how it looks under visible light. The veins on the petals are still visible near the edges of the petals, but the centre of the petals appears quite dark. The throat appears dark in the centre, whereas under visible light it is light yellow.

Bees and some other insects can see ultraviolet light, and it is believed that these ultraviolet markings act as 'nectar guides', guiding the insects to where the pollen / nectar is located, and so helping to pollinate the flower.

Tags / Keywords:
  • Biota
  • Life
  • Vitae
  • Eukaryota
  • Plantae
  • Plants
  • Magnoliophyta
  • Flowering Plants
  • Angiosperms
  • Liliopsida
  • Monocotyledons
  • Asparagales
  • Iridaceae
  • Iris
  • Iris sibirica
  • Siberian Iris
  • Iris sibirica 'Tropic night'
  • Ultraviolet
  • UV Photography
  • Nectar guide

Admin

Date Original Photo Taken:
Original File Name:
_DIR6023.psd
Event:
Rating:
☆
Date this image added/last updated on website:
Original File Dimensions:
2848px x 4256px
File Type:
JPEG
Color Mode:
RGB
Original Image Color Profile:
Adobe RGB (1998)

Location

Location Created:
Sublocation:
City:
Market Harborough
Province/State:
Leicestershire
Country:
United Kingdom
World Region:
Europe
Geo-location:

Rights

Copyright Status:
Copyrighted
Licensing Status:
Rights Managed
Available for Editorial Use:
Yes
Available for Commercial Use:
Yes
Copyright Notice:
© 2013 Dave Kennard

Camera Data

Date Digital Resource was created:
Shutter speed:
1⁄160 s
Aperture:
f/5.6
Camera Model:
Fujifilm IS Pro
ISO:
640
Exposure Compensation:
0
Focal Length:
80mm
Focal Length (35mm equiv.):
126mm
Metering Mode:
Spot
Flash:
Off, Did not fire
Exposure Mode:
Manual
White Balance:
Manual
Light Source:
Unknown
Exposure Program:
Manual

Additional shooting metadata

Lens:
Nikon EL-Nikkor 80mm F5.6
Filters used:
  • Baader U
Additional Optics used:
  • Kenko DG Extension Tubes 12mm
  • 17mm-31mm M42 Focusing helicoid
Setup:
Tripod, geared head, focusing rail
2x full spectrum modified Vivitar 283 flashes for lighting

Post Processing

Image Modified:
Software used:
  • Adobe Camera RAW
  • Adobe Photoshop CS5
Post Processing:

Channel Mixer used to modify colours in PS CS5