Onion skin

pwnell · Post by **pwnell** » Mon Dec 23, 2013 5:17 pm

Inspired by the beautiful photos of Litonotus recently, I had my hand at an onion's skin...

20131221-DSLR_IMG_0332.jpg by pwnell, on Flickr
Onion skin, 10x, POL+QWP+LP

20131221-DSLR_IMG_0222-Edit.jpg by pwnell, on Flickr
Onion skin, 40x/0.6, POL+QWP+LP, HF B

20131221-DSLR_IMG_0286-Edit.jpg by pwnell, on Flickr
Onion skin, 40x/0.6, POL+QWP+LP, HF B

20131221-DSLR_IMG_0351-Edit.jpg by pwnell, on Flickr
Onion skin, 40x/0.6, POL+QWP+LP, HF B

sebba28 · Post by **sebba28** » Mon Dec 23, 2013 6:20 pm

Very nice.

Jacek · Post by **Jacek** » Tue Dec 24, 2013 2:33 am

beautiful

arturoag75 · Post by **arturoag75** » Tue Dec 24, 2013 2:39 am

Very nice shots

emsiem · Post by **emsiem** » Tue Dec 24, 2013 4:40 am

I really like the colors. And detail. And composition. Good job! :-)

carlos.uruguay · Post by **carlos.uruguay** » Tue Dec 24, 2013 5:19 am

Beautiful photos.
What substance composes the crystals?

Litonotus · Post by **Litonotus** » Tue Dec 24, 2013 5:34 am

those really look like pieces of candies (: like them and also that I inspired you (:

pwnell · Post by **pwnell** » Tue Dec 24, 2013 10:09 am

carlos.uruguay wrote:Beautiful photos.
What substance composes the crystals?

Thanks for the comments guys. I'd like to know that too - as well as what the purpose of those crystals are?

rjlittlefield · Post by **rjlittlefield** » Tue Dec 24, 2013 10:14 am

carlos.uruguay wrote:Beautiful photos.
What substance composes the crystals?

Probably calcium oxalate. See http://www.microscopy-uk.org.uk/mag/ind ... nion1.html, about half-way down.

pwnell wrote:I'd like to know that too - as well as what the purpose of those crystals are?

As suggested there:

What are the calcium oxalate crystals for? Included as they are in the external wrapping (the “tunic”) of the bulb, it is generally considered that they may be, by its taste, and its sharp edged structure, an element of deterrence for those underground invertebrates that could be tempted to attack the onion. And possibly they are also a form to sequester, and to turn inoffensive, the oxalic acid produced by the plant metabolism itself.

--Rik

Marek Mis · Post by **Marek Mis** » Wed Dec 25, 2013 8:13 am

Very impressive images !

You have achieved an extremely beautiful lighting and the beautiful pastel colours.

Marek

RogelioMoreno · Post by **RogelioMoreno** » Thu Dec 26, 2013 10:56 am

Very nice set!

I should try it.

Rogelio