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

Niranjan Patel nirpat89 at yahoo.com
Wed Sep 6 20:31:27 UTC 2017

Hi, everyone:

Just curious....how is this UV light meter different from many off-the-shelf ones out there that can be bought - specs, quality, price?


      From: Greg Brophy via Alt-photo-process-list <alt-photo-process-list at lists.altphotolist.org>
 To: alt-photo-process-list at lists.altphotolist.org 
 Sent: Wednesday, September 6, 2017 9:18 AM
 Subject: Re: [Alt-photo] Alt-photo-process-list Digest, Vol 172, Issue 12
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. 


> 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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