Interesting substance (a form of vitamin B3) for photography. It tends to form globules of larger crystals inside a grainy sea.
This sample still wasn't completely finished crystallizing when I took the shots. Hot evaporation of organic substance solutions (usually a pinch in a drop of water) often leaves a glassy residue that slowly crystallizes when cooling.
10x/0.25 Nikon e-plan on Optiphot, polarisation, Olympus E-500 camera, enlarger relay lens. It's a bit unsharp in the left area, probably some misalignment in the perpetually improvised setup...
nicotinamide (or niacinamide) crystals
nicotinamide (or niacinamide) crystals
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- P1015420c.jpg (409.83 KiB) Viewed 1053 times
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Re: nicotinamide (or niacinamide) crystals
Thanks for posting. Especially like the third image.
Re: nicotinamide (or niacinamide) crystals
Thanks!
A 4x would have been better for the globule images, but that can't be done on my Optiphot with this DIC condenser. I can get in focus with my Lomo 3.7x/0.11 with an original MBU-4 extention piece but the condenser just can't illuminate the whole field of view
Oh, here's another one, interesting greens:
A 4x would have been better for the globule images, but that can't be done on my Optiphot with this DIC condenser. I can get in focus with my Lomo 3.7x/0.11 with an original MBU-4 extention piece but the condenser just can't illuminate the whole field of view
Oh, here's another one, interesting greens:
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