Re: digital camera profiling
Re: digital camera profiling
- Subject: Re: digital camera profiling
- From: "Stanley Smith" <email@hidden>
- Date: Wed, 20 May 2009 10:26:34 -0700
I'll second Robin's recommendation of the MegaVision system. While the
system is still somewhat in development, the tests of this system that
we did at the Getty Museum were nothing short of astonishing in terms of
color accuracy and rich information in the UV and IR. Ken is correct in
his recommendation of multi-spectral capture for "tweak-free" captures
of artwork. RGB captures need to jump through many tone-curve and color
management hoops to achieve what they do-- and no system ever delivers
an initial file that is colorimetrically accurate. It is understandable
that camera manufacturers have not been too concerned with this-- their
market is primarily to achieve high-resolution "pleasing color"--
leaving us museum professionals with no small amount of frustration. I
am encouraged with the tack that MegaVision is taking.
Stanley Smith
Manager, Imaging Services
J. Paul Getty Museum
1200 Getty Center Drive, Suite 1000
Los Angeles, CA 90049-1687
(310) 440-7286
>>> Robin Myers <email@hidden> 5/20/2009 10:08 AM >>>
The best solution I have seen to date for multi-spectral imaging is
the one Megavision (http://www.mega-vision.com) showed at Photokina.
This solution uses a monochrome camera with special LED lighting
instead of color filters to achieve the channel separations. The
solution is much faster than the scanning approach taken in the
Lumiere JumboScan. The Megavision approach also avoids many of the
optical issues encountered with the spectral filter systems.
Robin Myers
On May 20, 2009, at 8:31 AM, Fleisher, Ken wrote:
> On 5/20/09 10:57 AM, "Roger" <email@hidden> wrote:
>
>> Ken,
>>
>>> ..., but there are no systems
>>> that I know of that are commercially available or ready for normal
>>> production.
>>
>> Really? Nothing from Sinar? How about this system:
>>
>> http://www.lumiere-technology.com/Pages/Products/Product1.htm
>>
>> I heard it was used a few years ago to capture the Mona Lisa by the
>> Louvres
>> museum because they were afraid that something bad would happen to
>> it.
>>
>> Best / Roger
>>
>
> No, nothing from Sinar.
>
> I am familiar with the Lumiere camera system and I've met the person
> who
> designed it. As far as I understand, they had difficulty actually
> selling
> the camera to anyone (there is only one system in place that I am
> aware of,
> although I don't think it was ever actually for sale—they want to
> lease) and
> now they just offer spectral photography services.
>
> Besides, for reasons I won't go into on this list (too out of
> scope), there
> are some issues with actually using that camera system in a
> practical way.
> It's NOT a system for high production. If you don't have time to
> make some
> local color corrections, then you won't have time to capture a
> painting with
> this camera.
>
> Feel free to contact me off-list if you want to discuss this
further.
>
> Ken
>
> --
> Ken Fleisher
>
> Photographer
> Imaging & Visual Services
> National Gallery of Art
> Washington, D.C.
>
> Phone: (202) 712-7471
> email@hidden
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