Re: Primer on photographic exposure, etc.
Re: Primer on photographic exposure, etc.
- Subject: Re: Primer on photographic exposure, etc.
- From: Ben Goren <email@hidden>
- Date: Thu, 16 May 2013 08:26:25 -0700
On May 16, 2013, at 7:28 AM, Iliah Borg <email@hidden> wrote:
> Can you please describe how you got raw data from cameras, and how the data is normalised? What procedure was used while taking the shots? What lens was used on the camera, and what are the spectral properties of the lens?
I'd love to know this, too -- and, Iliah, on the same subject...any chance you could offer a few more details on your monochromator setup?
I'm especially interested in both the hardware configuration (integrating sphere?) as well as how you (presumably) know the XYZ value of the samples you're photographing. Are you measuring the monochromator output with a spectrophotometer? If so, how does the low resolution of the spectrophotometer interact with the narrow spectral characteristic of the monochromator? (If it's not obvious, I've never worked with such a device, so pointers to introductory materials would also be welcome.)
It seems to me that it would be very helpful for reproduction work to get a series of measurements with a monochromator (with camera lens) and to add them to the measurement data (Argyll's .ti3 file) of every chart measurement (using the same lens). It would alleviate all the concerns of a limited total chart gamut -- though you'd sill want as large a gamut as possible with as many samples as possible on your chart.
Thanks,
b&
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden