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Posts for: DoctorChas
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May 22, 2012 20:00:50   #
Thanks for the lovely comments. You've made me feel very welcome :-)

=:~)
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May 22, 2012 19:56:43   #
As I understand it, there is no photographic difference between a linear and a circular polariser. A LP stops most autofocus systems from working as they rely on detecting the light's phase shift between two different points of the lens which is effectively cancelled out by the LP. A CP adds a quarter-wave plate behind the polarising element which rotates the light in a spiral pattern. To the autofocus system, it now looks just like the light entering an unfiltered lens where the light is vibrating in all different planes.

You can still use a LP but you'll have to focus old skool.

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May 22, 2012 18:04:03   #
Thank you, AK. It's my favourite too. Just got an 18x12 back from the labs and it's even better in print.

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May 22, 2012 09:44:41   #
Well this is my first post here so I thought I'd share a few pics I've taken recently of Durham city. This part of the North East of England has many wonderful photo opportunities and Durham is very photogenic.

I took these on a day when the light was flatter than a pancake and, although I was reasonably happy composition-wise, the very soft nature of the light made for a not very interesting effect. Consequently, I decided to render the pics in black and white which, to my mind, vastly improves the mood.

Enjoy and comment as you see fit :-)

=:~)

Durham Cathedral & The Old Fulling Mill


Prebend Bridge


The Old Fulling Mill


Willow Tree & Prebend Bridge

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