Well, some long time ago I was able to "liberate" the last two surviving multispectral quartz fluorite lenses from the russian mission to Mars. Made by LOMO and designed by GOI, they represent (to me) a top result of the designers under Prof. Volossov who headed the optical design department of GOI in St Petersburg. Transmission is flat approx. 65% for 230...1000nm. Center resolution is approx. 80lpm
So all these pictures are made with the same lens, but you use filters to exclude the light beyond 400-700 nm in the first case, above 400 nm for the UV and I'm not sure what BV is?
Long story short, here now some results using that no-focusshift lens...
Tell us about the lens it has "no focus shift" for different wavelength.
The composition itself is pleasing. This is a very striking image and would be great printed huge.
Why purple?
I had to look up BV!!! These are terms from astronomy where using different sets of filters
"The magnitude of the star is measured first through a standardized B-band ("blue") filter. Then the star's magnitude is measured through a V-band ("visible", peaking in green) filter. The value of V is subtracted from B to get the B-V colour index.
As a star gets cooler and therefore more red, the B-V colour index increases, since smaller magnitudes correspond to brighter light. Hot stars have a small B-V and cool stars have a large B-V. Hotter stars therefore appear to the left on the Hertzsprung-Russell diagram and cooler stars appear on the right." Wikipedia
However, even after my research, I'm not sure what filters you used. Is this just a subtraction?
This is interesting stuff. I'd be hoping to see some hidden structures or markings that help the flower attract insects, LOL!
Asher