Nodule

Nodule

Posted on 07/17/2015


Photo taken on July 17, 2015


See also...

i-Central i-Central



Keywords

Grate
Treasure Hunt
TH7/15/12
Diffraction Grating
Spectral Star Filter


Authorizations, license

Visible by: Everyone
All rights reserved

118 visits

Diffraction

Diffraction
Treasure Hunt: Grate;

I have been hunting high and low for this old filter! it does not even fit any of my current lenses so I had to hold it over my phones camera!

How does this fit the theme you ask...?
The filter splits the light with precise lines scratched on to the optical surface of the glass and is known as a Diffraction Grating! This type of filter is used all over the place and you'd never notice.
Does anyone have a Fresnel Lens to widen the view from the back window of the car or how about one of those adapters for the headlights that deflect the main beam for when you drive in countries, as I have just done, on the 'other' side of the road... all the same principle! you can even get them in the form of reading lenses for books, like a magnifying glass with a light!
Photographically, these went through a massive 'in' phase but I bought mine, used it once and only got it out again today!! The only one I used regularly was an 8 point star filter which I used to give a nice soft focus effect with and avoided the starbursts where possible! :-)

John Lawrence has particularly liked this photo


Comments
Weld with Rob
Weld with Rob
Works a treat :-}
Thanks for explaining
2 years ago.
DeForest Ranger
DeForest Ranger
Works for me! I have a set of star filters, but since I'm seldom out after dark, I haven't had a chance to use them.
2 years ago.
Nodule has replied to DeForest Ranger
they're going to work just as well indoors as out... any light source will do and there are potentially more light sources indoors than out methinks :-)
The real problem with theses type of filter is they very quickly become tiresome and over-used!
2 years ago.
Cathlon
Cathlon
It makes a nice change though and I love the way it has worked like prisms.
2 years ago.
nauticalnancy
nauticalnancy
I haven't used my star filters in a long time
2 years ago.