Re: What is Causing This?
I don't have experience with CPLs, but I have studied topics on light scattering. Any direction 90 degrees from the sun will look more blue due to Rayleigh scattering. Anything more or less than 90 degrees will look more pale (and bright) since it consists of a more broad spectrum of wavelengths.
From looking at the direction of the shadows I can deduce that the sun is almost directly camera left from the left edge of the lens' FOV, which means the sky towards the left of the picture should be more saturated.
Re: What is Causing This?
Hi Steve,
Yep, Troy is correct.
I see from the EXIF it was a 28mm lens, so you are looking (by my guesstimate) at getting towards 90 degrees FOV horizontally, which explains why the CPL has a lot of effect on the left hand sode and so little effect on the right hand side of the image.
This is exactly why Colin hates them!
Re: What is Causing This?
Quote:
Originally Posted by
Dave Humphries
This is exactly why Colin hates them!
You beat me to it! :)
Re: What is Causing This?
Quote:
Originally Posted by
Dave Humphries
Hi Steve,
Yep, Troy is correct.
I see from the EXIF it was a 28mm lens, so you are looking (by my guesstimate) at getting towards 90 degrees FOV horizontally, which explains why the CPL has a lot of effect on the left hand sode and so little effect on the right hand side of the image.
This is exactly why Colin hates them!
Oh, by the way, it's not nearly 90 degrees :eek: I know this because i've been considering a 11mm capable lens for a long time, and on cropped sensor it's about 90 degrees horizontal. I just can't bring myself to throw down $500 USD for a lens!
Re: What is Causing This?
Excellent replies Troy. I understand what is happening now. The thing that still has me puzzled is that I have read that CPLs perform best when the lens is 90 degrees to the incoming sunlight. I assume this is referring to the CPLs ability to 'see through' reflection rather than it's incidental use in darkening blue skies.
Steve