[Alt-photo] Alt-photo-process-list Digest, Vol 172, Issue 12

Greg Brophy greg at gregbrophy.com
Wed Sep 6 13:17:42 UTC 2017


Hi Kees, 

Thanks for that. That may have been true with the sensor he used. Most UV sensors out there are do not read UV light, they make a calculation based on total light, I think there are new ones that only read UV light and reach their peak at 355n. I will probably keep trying to make it out of sheer curiosity, but I will also buy one as well from Ian since the whole reason I started this was because I wanted one. 

Greg

> On Sep 6, 2017, at 8:00 AM, alt-photo-process-list-request at lists.altphotolist.org wrote:
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> Today's Topics:
> 
>   1. Re:  Exposure Unit (Kees Brandenburg)
>   2.  UV exposure meter: answer from Ian Parker,    lightmeasure.com
>      (Kees Brandenburg)
>   3. Re:  UV exposure meter: answer from Ian Parker,
>      lightmeasure.com (Philippe Ayral)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Wed, 6 Sep 2017 09:10:13 +0200
> From: Kees Brandenburg <workshops at polychrome.nl>
> To: alt-photo-process-list
>    <alt-photo-process-list at lists.altphotolist.org>
> Subject: Re: [Alt-photo] Exposure Unit
> Message-ID: <F4D523E8-7E87-445D-8E28-8418776D04A1 at polychrome.nl>
> Content-Type: text/plain; charset=utf-8
> 
> The lightmeasure meters use a set of high & low pass UV filters above the sensor to narrow the spectrum.
> 
> -k
> 
> 



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