To cdewet: Deformation

[avigur_11]

Hi Callie,
The deformation of the circle shape of the sun is caused by the long way that the light has to go through the atmosphere when the sun is low. There is a difference of the atmosphere "thickness" between the "lower" and the "upper" sides of the sun, and therefore, the effect is not equal for those parts.
It's a great shot, Anyway.
Y.

[cdewet]

Hi Yitzhak
Yes, I am aware of this, But I have never seen it like this until recently. All my previous picures had the sun round, evem on the horizon. I think it is a function of teh Didital magnification. Even the edges of the sun is ragged on my pics as well.
Regards
Callie

[elroyie]

Hi
I saw that Yizhak answered your question so I didn't interrupt, I have an example of the sun without the converter, it is also not round and the atmosphere is the right explanation, it is hapenning when the sun is 'kissing' the horizon, here are an examples:
http://www.pbase.com/elroyie/image/31582713
http://www.pbase.com/elroyie/image/33697859
I think that the wheather at the shooting moment has also influence, like humdity and more.

Another point, I think that the converter is adding a little bit CA to the pictures, you can see it around the sun, there are a little bit coloured edges.

Elroyie