I did a whole series trying my polarizing set up, on top of the source light there is a 52mm polarizer, then in the middle of the swing out condenser a clear (or frosted) plastic CD protector from a CD box working as a retarder (kind of)and just below the camera the analyzer on a 30 to 37mm step up ring (makes it easy to remove it)
First one is the front part with Nikon CF 10/0.50 Fluor via Direct projection on a Olympus BHT, XPol + retarder, 64 image stack with Sony A5100
Big size
Stereo Pair
One more, same setup different adjustments; 66 images
Big size
Stereo pair
Another one similar to the first one, different polarizer settings; 56 shots
Big size
Stereo pair
Polarized midge larvae
Moderators: rjlittlefield, ChrisR, Chris S., Pau
Polarized midge larvae
Last edited by seta666 on Fri Apr 09, 2021 12:22 pm, edited 7 times in total.
Re: Polarized mosquito (or midge) larvae
Excellent image; it's a Chironomid (midge)
NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.
Nikon camera, lenses and objectives
Olympus microscope and objectives
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.
Nikon camera, lenses and objectives
Olympus microscope and objectives
Re: Polarized mosquito (or midge) larvae
Thanks, I am lucky I have you (and Rik ) to correct me all the time ..
Re: Polarized midge larvae
Great result! The stereo is excellent.
Dave
Dave
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Re: Polarized midge larvae
Nice images! . You do not have loss of contrast when using a polarizer between the object and the objective? I have never achieved a nice result and with minerals with shiny surfaces it should work well.
Re: Polarized midge larvae
Thanks!! It is not between object and objective; the polarizer is above source light, then in the middle of the condenser plastic from a CD box acts as a retarder, the the object, objective and analyzer just below the camerasoldevilla wrote: ↑Thu Apr 08, 2021 11:04 amNice images! . You do not have loss of contrast when using a polarizer between the object and the objective? I have never achieved a nice result and with minerals with shiny surfaces it should work well.