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  #1  
Old 08-17-2005, 01:15 PM
greg greg is offline
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Default IR and UV filters

Is it right that an IR filter passes only IR, and a UV filter cuts out UV? That's odd naming.

Anyway, I was wondering what you get if you have a UV-pass filter? Does anyone ever do UV photography? Huh, Adrian...?

Anndra's picture today set me thinking...
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  #2  
Old 08-17-2005, 01:39 PM
green green is offline
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Default Re: IR and UV filters

I do UV filter picture all the time. In fact there's always and at any time an UV filter on any of my camera (unless I'm using another filter pola, red, etc...). I actually use it as a front lens protector that why I never remove it (better break or scratch the filter than the lens).
An uv filter do cut some of the UV rays although it doesn't really show on the picture most of the time, but when taking picture by the sea or at the mountain when it's sunny, it does cut out some of the fog effect due to the UV ray from the sun.
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Old 08-17-2005, 01:49 PM
greg greg is offline
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Default Re: IR and UV filters

Hi Romain, actually I was meaning the opposite. What do you get if you have a filter which cuts out the visible light and lets through only UV? People do this with IR, but I've never seen it done with UV. Maybe it doesn't work. Glass, i.e. lenses, filter out UV, but presumably not all, otherwise there'd be no point in these UV filters.
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Old 08-17-2005, 01:56 PM
green green is offline
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Default Re: IR and UV filters

Oops sorry about that.

Well we would then need some film or sensor that are able to capture those UV. I don't think that is accessible to the common photographer. Or I might be wrong.
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  #5  
Old 08-17-2005, 04:40 PM
MKING MKING is offline
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Default Re: IR and UV filters

It is possible to do photography in the UV spectrum though I've never tried and really am not sure how it's done (do know that there were some specialist optics out there at one point that did this sort of thing eg UV-Nikkors...)

Bjorn Rorslett
This is an excellent nature photographer who also does UV work and has some explanations on how to achieve this on both film and digital mediums
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  #6  
Old 08-17-2005, 06:28 PM
greg greg is offline
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Default Re: IR and UV filters

Thanks, Mike. That's very interesting. The flowers are astonishing, especially the plain old dandelion! I like the part about cleaning your lenses with abrasive polish, too...

Here's a link to the particular page on IR and UV if anyone else wants a look.
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