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Full spectrum photos without modified camera

Started Feb 16, 2019 | Discussions thread
OP MacM545 Contributing Member • Posts: 783
Re: Full spectrum photos without modified camera

SteveInNZ wrote:

I dabbled in a bit of UV photography a while back. This is taken with an unmodified Canon 10D with a B+W/403 filter. It was the only camera I've tried (and I've tried a few) that had any sensitivity at that wavelength and also was very insensitive to the IR that this filter leaks.

Goldmound flower in visible and UV light.

There are a few oddball lenses that are really good for UV without going to the expense of quartz. The easiest to get with reasonable performance are enlarger lenses which have been designed for best performance at the blue end of the spectrum. The focus shift between visible light and UV can be very large. Way more than IR.

The most convenient source of UV light is the Sun. Another cheap option is to use a UV LED through a Woods glass filter like the B+W/403. That will block the IR.

Unless you really want to get right down into UV, you would get better bang for your buck investing in a Baader UV Venus filter, rather than quartz lenses. That filter doesn't have the IR leak that a Woods glass filter does.

I must have another crack at this sometime.

Steve.

The UV LED option, wouldn’t that be considered UV fluorescence?

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