Colouring Transparent Subjects
Dec 7, 2012 21:23:54 #
When you get very tiny and are using long bellows extensions and powerful magnification, many subjects have fascinating shapes but not much colour. Using Kokin PolarColor Filters, or two polarising fliters with a dichroic crystal like selenite between them, can add colour to even the most colourless transparent bug. For instance a water flea (Daphnia) or fish scales or rock samples. Even bits of plastic are colourful like this image of the edge a Nikon plastic filter case.
The Edge of a clear plastic case polarised
Daphnia by dichroic polarised light
Fish Scales of Dover Sole
Dec 7, 2012 21:33:04 #
Dec 7, 2012 21:44:39 #
Photo-Microscopy is a fascinating subject. One or two of our macro-photographers dabble with the microscope.
Please post a photo or two of your set-up.
Please post a photo or two of your set-up.
Dec 7, 2012 23:02:38 #
Hi, I generally use a 70-180/4.5-5.6D AFED Micro-Nikkor for photography at 1:1, Then I use a pair of Nikon PB6 bellows with an 80mm El-Nikon enlarging lens instead of a macro, or a 50mm standard lens in reverse. Then I use the microscope.. A Watson Service E25 seen below. Though often I stay with the bellows because of the non-existant depth of field under the microscope. Most crystals and plankton etc are best at about ten times magnification. I use a polariser over the light source and another over the lens to get the crossed polar effect to bring out the diffraction colours. A dichroic filter made from selenite or a Kokin PolarColor filter goes just underneath the subject.
My microscope, camera and electronic flash
Crystals of Salicine (Source of Aspirin from Willow Bark)
A fractured Selenite Crystal gives Landscape Effect nearby crystals are Pot. Chlorate
Dec 7, 2012 23:06:33 #
Dec 7, 2012 23:29:05 #
Andy Scuba wrote:
You already labeled it!Okay... Guess what this is...
Thank you for the set-up image.
Dec 7, 2012 23:45:17 #
Very interesting pics. Not something anyone of us would probably see. Thank you for posting!
Dec 7, 2012 23:46:48 #
Well I always put this on screen whenever I give a public picture show and nobody has yet come close. So in order to reduce stress I thought I'd better not keep you in suspense and worry. Some of the pics I make at out of this world. For instance below is a piece of Venus Flower Basket deep sea sponge. I once made a movie of this using varing focus to give the appearance of flying through a bridge-like structure. The holes are only a couple of millimetres across.
And there's some more pretty crystals for you.
And there's some more pretty crystals for you.
Venus Flower Basket
Crystals
Dec 8, 2012 00:02:50 #
Dec 8, 2012 11:48:06 #
Andy, you have WAY too much spare time, and make great use of it. Fascinating shots!
Dec 8, 2012 12:11:48 #
Dec 8, 2012 21:58:47 #
Dec 11, 2012 22:16:52 #
Here's some more polarised plastic, for you.
It's so easy to do this... all you need is two polarising filters.
This is a great party trick to show the children over Christmas. Just hold one filter in front of your eye and one over the light source.
Happy Christmas
Andy
It's so easy to do this... all you need is two polarising filters.
This is a great party trick to show the children over Christmas. Just hold one filter in front of your eye and one over the light source.
Happy Christmas
Andy
Polarised Clear Plastic from a 2$ shop
Dec 11, 2012 22:27:47 #
Andy Scuba wrote:
And if you twist them, new stress patterns will colorize in the clear plastic.Here's some more polarised plastic, for you.
It's so easy to do this... all you need is two polarising filters.
It's so easy to do this... all you need is two polarising filters.
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