Finally, I Have A UVC Camera.

[colinbm]

Finally, I Have A UVC Camera.
I now have a mono converted Sigma fp that can see down to 250nm.
First tests with a UV Nikkor 105mm f4.5 lens.

Quartz Diffraction Grating.
Let me know of a common subject that you would like to see ?
 

[Stefano]

Nice!

 

If you have the filters to do this, try glass to see if it's black. That should be a good test to see if you are seeing pure UVC. Things like ZWB1, ZWB2, etc. that pass UVA and UVB but not UVC should look black.

[dabateman]

Very cool.  Should be more user friendly than my pi HQ camera.  I am currently wrestling with adding a shutter button,  so I can use it with focus stacking on a automatic rails. 

 

Yours you can run around with more easily.  Do you have a portable uvc lamp thing? I bought a bunch at $15 each.  I think at least 2 have died on me. But can work for flowers in your garden or rocks.

 

 

[colinbm]

@dabateman Thanks Dave
I have some UVC LEDs, from 255nm & higher.
I could use them individually OR I could make these into a cluster to focus at a small say 100mm spot ?
Also some UVC Mercury tube lights.
 

Surplus Shed has a ELECTRONIC CAMERA LENS, SHUTTER, SENSOR ASSEMBLY, that may be adapted ?
https://www.surplusshed.com/pages/item/M3059.html
 

[colinbm]

@Stefano Here is an attempt at a half window glass, showing the blocking of UVB at about 300nm.

[Stefano]

It looks like you are seeing a hint of the 185 nm line, just barely.

[Doug A]

Wow! This is so neat. Can't wait to see what you image with this setup. Be careful. Did you know this particular sensor would do UV-C so well or did you just roll the dice?

Thanks for sharing,

Doug A

 

[colinbm]

@Doug A Thanks
Yes the Sigma fp has the same sensor as a Sony model, they are back illuminated sensors, BSI, & they are good for mono UVC with the CFA removed.
I was hoping it would see down to 200nm, but I am happy with 255nm.
Yes you need to be careful not to expose yourself to UVC light, it can cause nasty burns to the eyes & skin, & destroys DNA.
Polycarbonate face shield & long sleeve & leg clothing.

[Andy Perrin]

Looks good, can't wait for some pictures.

[Fandyus]

I can't wait for the pictures either.

[photoni]

@colinbm I don't know how they say it in your country
in Italy they say "a monkey climbed onto my shoulders"
yesterday I searched and found a used Leica Monochrom M typ 246 24Mpx for €3K...

but I don't have any suitable lenses for it.

[colinbm]

@photoni Excellent, 'Lady Luck' .

[photoni]

28 minutes ago, colinbm said:

@photoni Excellent, 'Lady Luck' .

no luck , I can't give myself too many gifts...

I'm thinking of getting a new Petzval (modern copy of an 1860 Dallmeyer 3B - 290 mm f 3 lens)

[colinbm]

I should have looked it up....
Unfortunately, too often we see reluctance and inability to make decisions and take responsibility: no one wants to have the “monkey on the shoulder”, meaning, being held liable for a decision taken. This behavior mostly leads to negative business impact.

[Andrea B.]

The saying means something like:  I want the camera but I don't want the camera. Unable to decide. The decision is nagging me. 

 

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Toni - Leica M has a short flange focal distance of 27.80 mm. So with a suitable adaptor, you can probably use many lenses you already have.

I have the first Leica M Monochrom, and it can make UV photos without additional internal alteration. I do not know about the second Leica M Monochrom.

But may I point out that the Pentax K3 Mark III Monochrome is possibly a less expensive way to go monochrome?? Again, we would need to determine whether the Pentax Mono needs further alteration.

 

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Colin - I'm reading your adventures in deep UV with interest. Please photograph anything and everything!