Please suggest targets that can be interesting in UV-B

[lukaszgryglicki]

Hi, after maybe a year or more of completing filters and other gear (lens, body) I finally have a stack that can do UV-B. I'm now quite confident about this.

 

This stack consists of:

- Fuji GFX 50R converted to monochrome by maxmax.com, replacing sensor cover glass with quartz window passing from 180nm, Baye matrix RGGB removed, antialiasing removed.

- UV-Nikkor.

- 2 x Invisible Vision 308nm filer.

- Hoyan U-340 4mm thick filter.

- LOTS of sunlight and calm day (no wind)

 

Exposures are in the 1 to 4-minute range (most often 2 minutes) with f = 11. Focusing is possible in magnified Live View up to f=5.6, but you must be VERY patient as the response is very laggy, extremely slow, noisy, and dark.

 

 

More details here: 

- https://www.ultravioletphotography.com/content/index.php?/topic/5794-double-invisible-vision-308nm-stack-results-this-is-pure-uv-b-imho/&do=findComment&comment=62234

 

- https://docs.google.com/spreadsheets/d/1zMXCT4vtTR6PGf-yzFgUJgUop3gfkpaRAZ50IqN2lsQ/edit#gid=1329577068

- https://docs.google.com/spreadsheets/d/1zMXCT4vtTR6PGf-yzFgUJgUop3gfkpaRAZ50IqN2lsQ/edit#gid=1605426954

 

Now please suggest some subjects that are interesting according to you or you want to see them in UV-B - I will photograph them. They can only be photographed outside in full sunlight (June comes very soon, days are longer and longer and the sun is higher).

 

Thanks!

 

 

 

[Andy Perrin]

One thing I think is that you should take photos at different peak wavelengths so we can compare. It is hard to tell what is characteristic of UV-B from UV-A. 

 

Ideas:

1) Really distant scenes like mountains probably have increased "fog effects" due to the Raleigh/Mie scattering.

2) Plastics probably are interesting, especially if you have a variety of different types. I bet glass objects too. Maybe some still lifes?

3) Obviously flowers

4) Fruit slices and vegetable slices

 

[dabateman]

Try some silver if you have it. Various grades and see if its darker in Your UVB than with a UVA filter or stack.

 

[lukaszgryglicki]

Good idea, I have many metal cubes from luciteria.com, I have some silver stuff too.

But now I need to wait for a sunny and calm day.