As I have mentioned before, Stackshot makes shooting the same subject with different lighting options a breeze. I have to confess that I had become very used to my previous workflow for shooting flowers in my indoor studio. But once I get used to the Stackshot, it will make it much easier to shoot flowers with even more filters.
As I have collected quite a few filters, I thought it would be good to look at a traditional flower used to test and show UV-imaging capabilities of cameras, lenses and filters.
Baader UV/IR cut, Baader U filter, IDS1, IDS2e, 330AF20 and 330WB60.
Stackshot used to select the front and back of subject. Baader U being the thinnest filter, was used to select the front point of focus and the back point of focus was set a little further back so the flower almost goes out of focus at the back end. This ensures that all the filters used will be able to catch all parts of the flower in focus for stacking. I could have used the thickest filter to set the back point, but the above method works well and means a simpler workflow.
Anyway, here are the results. All white balanced using sintered PTFE in Capture One Pro 7.
With the 330AF20 filter, only light 320 to 340nm is let through to the sensor. It requires a boost of the output from my Quantum X2D to full power and using F5.6 (compared to 1/8 power and F11 for the Baader U i.e. 5 stops less power required). As can be seen, it cannot white balance fully due to the narrow spectrum of light – so the background has a slight greenish/yellow tinge.
The Stackshot surely makes it easier to document the pattern displayed by a flower under different lighting as recorded through various filters. Normally it would be challenging to adjust the focus on the flower when using the 330AF20 filter, as it blocks light above 340nm. But with the above method, I can get enough of the flower in focus to stack them together.
It will be interesting to see how other flowers look with all these filters.