Playing with cross-polarisation

Lord Vetinari

Been playing with cross-polarisation effects on plastic sheets.
The setup is shown in #1 which is some plastic sandwiched between two CPL filters held together with blue-tac and stuck to a window for light.
The colors and strength of colour changes as you rotate the filters. The rather cellular looking ones are just the protection styrofoam disc the filters sit on in their holders.
Fun to play with and you can get some interesting shapes and colours by folding or crumpling the plastic sheet. The free supermarket veggie bags seem good for this but worth trying other materials.

Brian V.

Bend The Light

I've been admiring these on your Flickr. Very nice idea, indeed.

Another person (can't remember who, or even which forum!) suggested placing plastic items between an LCD monitor and a polariser filter on the camera. The screen of the laptop acts as a polariser, too!

I'm going to have a go when I get a minute between sorting the kids' presents!

GOLDENORFE

very cool! well shot brian

Lord Vetinari

Thanks for the comments
Brian V.

DeVil

Nice set

Lord Vetinari

DeVil wrote: »

Nice set

Thanks DeVil
Brian v.

jackiejay

Oh so cool I can do something and it wont cost me anything lol(Im saving for a bigger lense )Now Iv gotta go rig somethin up.Thanks for sharing that with us Brian

Lord Vetinari

jackiejay wrote: »

Oh so cool I can do something and it wont cost me anything lol(Im saving for a bigger lense )Now Iv gotta go rig somethin up.Thanks for sharing that with us Brian

You can do this with just one CPL filter on the camera lens if you use the light from an LCD screen as the light source (it's already polarised).
Brian V.

JC

very cool. Never thought about doing this on the macro scale. On the micro scale now.....

I wonder what muscovite would look like at the macro scale, if you could find an old furnace window, or broken mica lampshade or some such and flake it thin.

on the micro scale sandwiched between plarizers (pardon the pic reply):

Lord Vetinari

kolibri wrote: »

very cool. Never thought about doing this on the macro scale. On the micro scale now.....

I wonder what muscovite would look like at the macro scale, if you could find an old furnace window, or broken mica lampshade or some such and flake it thin.

on the micro scale sandwiched between plarizers (pardon the pic reply):

Yes I think many crystalline materials look interesting with cross-polarisation

bhundt

I have also been admiring your work on Flickr and must say you do some very nice creative work, Is there one particular lens that you lean to?

Lord Vetinari

bhundt wrote: »

I have also been admiring your work on Flickr and must say you do some very nice creative work, Is there one particular lens that you lean to?

Thanks.
Think I use my MPE-65 high magnification lens more than any other but I also use a Tamron 90mm lens for lower mag macro shots.

Brian V.