Illumination comparison!
Illumination comparison!
Hi
Menthol + Malic acid under different illumination
Pseudo-DIC
Pseudo + Pol Pol + retarder Steve
Menthol + Malic acid under different illumination
Pseudo-DIC
Pseudo + Pol Pol + retarder Steve
Re: Illumination comparison!
Great examples. I'm tempted to say even the third is "not retarded at all . . ."
FWIW, an Ebay seller has recently been offering very affordable quarter wave plates laminated between (usually) acrylic and sometimes glass.
FWIW, an Ebay seller has recently been offering very affordable quarter wave plates laminated between (usually) acrylic and sometimes glass.
Re: Illumination comparison!
Would be interesting to compare a ‘proper’ wave plate with homemade retarders, anyone done a comparison?
Steve
Steve
Re: Illumination comparison!
Not really clear to me what they are selling, I guess "lambda" alone should imply full-wave? But some of the "Wave Plate Retarder Lambda" listings say quarter-wave in the actual listing text, others don't specify.
What are people typically using for homemade retarders? I finally found a reasonable deal on an AO/Reichert 1153 polarizer with swing-out full-wave plate but just got it cleaned up a few days ago and have not used it much yet.
Re: Illumination comparison!
Seems there are four main options for less-than-new-OEM prices: 1) make your own with layers of stretched plastic; 2) something a step up like those Ebay listings; 3) used plates off Ebay - often still pricey; 4) occasionally-available items from optical surplus places.
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Re: Illumination comparison!
Yeah you can get quarter and half wave film cheap from edmunds. A little norland between two watch glasses works well.
1942 Bausch and Lomb Series T Dynoptic, Custom Illumination
Re: Illumination comparison!
Very interesting images, thanks for sharing!