ducks

Guess what?


Yes - you've guessed! These are all the same ducks!
(Sorry the pics aren't too good!)

Oh I suppose everyone else already knew that ducks' heads change colour!

shim

No!
Really!
I was amazed!
They looked blue/purple if I looked at them from the south and they looked green from the north!
They ARE the same ducks!
(or are you teasing me and you knew about this already?)
:

If you want some usefull comment post the image separately so that we can see the exif data and see what you've done with them.

This post was not about asking for comments about the pics but about my astonishment about the colour changes which I saw with my own eyes. I took a few "snaps" to record it. They are "snaps" like a tourist would take.
Perhaps I should not post this sort of thing here....
1 I wanted to show how my basic K100D did a passable job of capturing the colours - particularly the green state
2 Also, photography relies heavily on the physics of optics - so here are some challenges:
What causes the change in colour?
What are the dimensions of the filaments that cover the ducks' heads?
What were the angles between me, the duck and the sun?

Here are two samples - cropped slightly, sharpened and reduced to 1000pix across
blue-violet
[IMG]http://i696.photobucket.com/albums/vv328/MGraley/IMGP0088xsmall.jpg[/IMG]
green
[IMG]http://i696.photobucket.com/albums/vv328/MGraley/IMGP0091xsmall.jpg[/IMG]

You only have to see a Mallard turn his head once, to realise Iridescence is at play.

Peacocks & hummingbirds are other fine examples, tricky to try & get all 3 in one shot though !

Yes I know - diffraction or interference probably.
Maybe I saw it so clearly because the sun was bright and quite low - see the shadows above.
Strangely enough, in all the places I have looked, the "adult male mallard" is described as having a "metallic green" head.
Not entirely true......!

I've just spotted "wonky ducks" in the gallery. One of those also has a blue/purple head. Posted by Tony-o on Friday!

Your Quackers!!!

shim

yup!

Quack Quack Quack Quack

shim Quack Quack

here are my ducks




I must have taken this from the North, as they look a bit green!

My monitor is perhaps a bit dim, so I did this:

[IMG]http://i696.photobucket.com/albums/vv328/MGraley/3264536428_9f5b21e963brightenedupab.jpg[/IMG]
Now they're green (no cheating honest!)