[Alt-photo] UV exposure meter: answer from Ian Parker, lightmeasure.com

CatherineCostolo mikes1mom at comcast.net
Wed Sep 6 14:33:28 UTC 2017

Thanks, Kees!

Catherine Costolo 
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> On Sep 6, 2017, at 4:56 AM, Philippe Ayral via Alt-photo-process-list <alt-photo-process-list at lists.altphotolist.org> wrote:
> I confirm by mail my wish to buy that meter directly to Ian.
> Thanks for making that possible.
> *Philippe Ayral* *Photographie*
> 52, rue de Vallard - 74240 Gaillard
> Tél: 04 50 39 79 81
> www.payral.fr
> 2017-09-06 9:42 GMT+02:00 Kees Brandenburg via Alt-photo-process-list <
> alt-photo-process-list at lists.altphotolist.org>:
>> Dear list,
>> This week I have contacted Ian Parker and asked him if he was willing to:
>> • produce and ship a number of pre-ordered meters
>> • open source the design
>> Here is Ian’s answer and it’s good news!
>> I will now collect the list of interested buyers form the thread(s) here
>> and send them to Ian. New buyers can contact Ian directly:
>> info.lightmeasure at gmail.com. The new meters will be long wavelenth with
>> external sensor only and the prize will be $299. Production lead will be
>> 4-6 weeks.
>> Kees
>> ================
>> Hello Kees,
>> How very nice to hear from you and thank you for the explanation. I
>> actually suspected there might be an active thread on a list somewhere
>> since I have, indeed, received several recent inquiries about the meters.
>> You asked a couple of question in your email:
>> 1) Would I consider open-sourcing the design? There are a few challenging
>> technical steps in building the meters, which might make this approach
>> unfeasible for some artists. The hardest is fabricating the UV filter with
>> the correct characteristics so the meter will measure only the range of UV
>> wavelengths that our plates/papers/materials respond to but not other
>> wavelengths (including visible light). This is pretty tricky to do without
>> the proper tools. I had to custom design a combination of 4 filters to
>> achieve this and it required access to specialized optical instruments to
>> measure their optical transmission - tools which most artists/photographers
>> would not have ready access to.
>> 2) Would I consider a custom order for more meters? The answer to this is
>> probably yes - assuming I could get a commitment from a sufficient number
>> of customers, and with a few caveats:
>> i) Since I have significantly depleted my existing inventory I would need
>> to restock on many components, and would therefore need a commitment for at
>> least 40 orders to make this viable.
>> ii) Also I will need to increase the price (!) - sorry about that but the
>> previous price point of $220 really doesn't work without volume of scale
>> (which is the reason that we closed the store in the first place). I'll
>> need to set the price at $299. I realize this might be a problem for many
>> people, but it's an unfortunate fact. Again, sorry.
>> iii) Since I will need to reorder much of the inventory there will be an
>> inevitable delay of 4-6 weeks before I could ship. One of the major
>> components has a 4 week lead time.
>> iv) To keep things manageable I'll probably only offer the PPM-2 long
>> wavelength version (with the external sensor). This was, by far, our most
>> popular version, and I expect that most people would order this anyway.
>> So how to proceed? Might I suggest that you circulate this to the
>> alt-list, and ask people to contact me at the following email address if
>> interested? If I receive enough responses I'll reopen the store and start
>> accepting orders.
>> contact at:  info.lightmeasure at gmail.com.
>> Thanks Kees, it was nice talking with you again.
>> Best regards,
>> Ian
>> www.LightMeasure.com
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