Close look on UV LEDs

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Lexel
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Close look on UV LEDs

Did some photos with my reverse adapter for DSLR
Used Canon Eos 50D with 16-35mm F2.8 lens
@F=18 and reverse adapter ISO400 1/160s
light with a 1400 lumens 5000K NW flashlight from the side

First Lite On

http://www.mouser.com/ds/2/239/LTPL-C034UVH365%20DataSheet_Ver4_20150916...
this LED has a electrical neutral middle thermal pad for DTP stars
The active area is a lot bigger than on he Nichia LED, so it throws less
my LED has a surprizing low forward voltage of 3.46V @0.7A

second Nichia NCSU276A U365

die size 1×1mm
LED forward voltage of my one 3.84V @700mA
http://www.nichia.co.jp/specification/products/led/NCSU276A-E.pdf

Edited by: Lexel on 03/16/2017 - 15:32
Valor
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Are you going to de-dome them? Cool

Lexel
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the pictures are only cropped a tiny bit to cut parts from background, the original size has about 13MP from 20MPixel left

for those who are not familiar how to do ultra macros with reversing a lens

This reverse adapter is self build from
first a reverse adapter without any contacts
like this http://www.ebay.com/itm/72-MM-72MM-Macro-Reverse-Lens-Adapter-Ring-For-C...
a adaptor ring extending from 72 to 82mm for the lens

Then I ordered a cheap macro extender for EF lenses
dismantled it to get the Ring connecting to the lens to the camera
on the other side I removed the contact plate

I used a cable to connect the both contact plates

Then I dremeled the mechanical reverse adapter to make the contact plate fir and hot glued in there

It was a selfbuild back in 2008 or so
for those who dont want to self build them they are now also commercial availiable
http://www.ebay.com/itm/AF-Macro-Reverse-Adapter-for-Canon-with-58-67-72...

itsonlyme
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Ingenious and amazing quality

mrheosuper
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Why need a contact, doesn’t you have to use mf(AF when shot macro really suck)

Forgot my pen

turboBB
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That is awesome Lexel!  Do you by any chance know if they make equivalent of that AF adapter for Nikon F mount? I did a search but came up empty.

LatticeBlight
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Wow, the lighting really makes the difference. I have the choice of macro tubes, macro lens and one of those glass filters but it never turns out as good since my iso shoots up to 1600+.