HDR images

radiance-general
1

Dear colleagues:

I am planning to introduce HDR imagery in my daylighting class in the
fall using Photosphere. My understanding is that I will need a CCD
camera, a wide-angle/fisheye lense and a luminance meter to calibrate
the camera. Could anybody recommend any specific products that I should
buy? Has anybody compiled Photosphere under Windows (sorry GregJ).

Thanks a lot,

Christoph

Christoph Reinhart, Dr. Ing.

Associate Professor of Architectural Technology

Graduate School of Design - Harvard University

Gund Hall 331b, 48 Quincy Street, Cambridge, MA 02138, USA

t: 617 384 7269, f: 617 495 8916, [email protected]
<mailto:[email protected]>

Daylighting Design: Rules of Thumb
<http://www.gsd.harvard.edu/people/faculty/reinhart/documents/DiffuseDay
lightingDesignSequenceTutorial.pdf> , Simulation
<http://www.daysim.com/> , Executive Education
<http://execed.gsd.harvard.edu/cgi-bin/exec_ed/details.cgi?offering_id=1
01683>

2

Hi Christoph,

I'm cross-posting my reply to the HDRI mailing list, where this probably belongs.

I hired a programmer friend of mine to port Photosphere to Windows and Linux a few years ago, but she has since had two children and is a busy mom. I'm not sure where that project stands, to be honest. I know it is possible to compile the command-line tool hdrgen under Windows with some effort, but it hasn't been done for many a year.

The Canon 5D camera with Sigma fisheye is a good choice, and Sigma has a 180-degree fisheye that works on APS sensors now as well, so you could get a Nikon D90 (or whatever) and use that as a lower-cost alternative.

Cheers,
-Greg

···

From: "Reinhart, Christoph" <[email protected]>
Date: May 14, 2009 6:34:44 AM PDT
Dear colleagues:

I am planning to introduce HDR imagery in my daylighting class in the fall using Photosphere. My understanding is that I will need a CCD camera, a wide-angle/fisheye lense and a luminance meter to calibrate the camera. Could anybody recommend any specific products that I should buy? Has anybody compiled Photosphere under Windows (sorry GregJ).

Thanks a lot,

Christoph

3

Hi Christoph,

We've had pretty good success using the Sigma 4.5mm fisheye on a Nikon D40. The images do need to be calibrated for which we use a Minolta CS-100a luminance meter. We found the latter on E-Bay for a fraction of the price of a new one. A colleague has a Nikon Coolpix P-1 point and shoot which seems to be spot on, needing no calibration (perhaps because Greg has the same camera?:)).

Chris
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···

On May 14, 2009, at 6:34 AM, Reinhart, Christoph wrote:

Dear colleagues:

I am planning to introduce HDR imagery in my daylighting class in the fall using Photosphere. My understanding is that I will need a CCD camera, a wide-angle/fisheye lense and a luminance meter to calibrate the camera. Could anybody recommend any specific products that I should buy? Has anybody compiled Photosphere under Windows (sorry GregJ).

Thanks a lot,

Christoph
Christoph Reinhart, Dr. Ing.
Associate Professor of Architectural Technology
Graduate School of Design - Harvard University
Gund Hall 331b, 48 Quincy Street, Cambridge, MA 02138, USA
t: 617 384 7269, f: 617 495 8916, [email protected]
Daylighting Design: Rules of Thumb, Simulation, Executive Education

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Radiance-general mailing list
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http://www.radiance-online.org/mailman/listinfo/radiance-general

4

Hi Christoph,

I have a 5D and Sigma 180 fisheye. I would be happy to bring them by sometime if you are interested in checking them out.

Actually, if we are on the topic of porting applications a port of the canoncap application would be pretty nice....

Best,

-Jack

Greg Ward wrote:

···

Hi Christoph,

I'm cross-posting my reply to the HDRI mailing list, where this probably belongs.

I hired a programmer friend of mine to port Photosphere to Windows and Linux a few years ago, but she has since had two children and is a busy mom. I'm not sure where that project stands, to be honest. I know it is possible to compile the command-line tool hdrgen under Windows with some effort, but it hasn't been done for many a year.

The Canon 5D camera with Sigma fisheye is a good choice, and Sigma has a 180-degree fisheye that works on APS sensors now as well, so you could get a Nikon D90 (or whatever) and use that as a lower-cost alternative.

Cheers,
-Greg

From: "Reinhart, Christoph" <[email protected]>
Date: May 14, 2009 6:34:44 AM PDT
Dear colleagues:

I am planning to introduce HDR imagery in my daylighting class in the fall using Photosphere. My understanding is that I will need a CCD camera, a wide-angle/fisheye lense and a luminance meter to calibrate the camera. Could anybody recommend any specific products that I should buy? Has anybody compiled Photosphere under Windows (sorry GregJ).

Thanks a lot,

Christoph

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--
# Jack de Valpine
# president
#
# visarc incorporated
# http://www.visarc.com
#
# channeling technology for superior design and construction

5

Thanks a lot for the kind offer Jack. I have applied for some funding
for purchasing this equipment and once I have it secured I will get back
to you for sure.

Christoph

···

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Jack
de Valpine
Sent: Thursday, May 14, 2009 1:57 PM
To: Radiance general discussion
Cc: High Dynamic Range Imaging
Subject: Re: [Radiance-general] HDR images

Hi Christoph,

I have a 5D and Sigma 180 fisheye. I would be happy to bring them by
sometime if you are interested in checking them out.

Actually, if we are on the topic of porting applications a port of the
canoncap application would be pretty nice....

Best,

-Jack

Greg Ward wrote:

Hi Christoph,

I'm cross-posting my reply to the HDRI mailing list, where this
probably belongs.

I hired a programmer friend of mine to port Photosphere to Windows and

Linux a few years ago, but she has since had two children and is a
busy mom. I'm not sure where that project stands, to be honest. I
know it is possible to compile the command-line tool hdrgen under
Windows with some effort, but it hasn't been done for many a year.

The Canon 5D camera with Sigma fisheye is a good choice, and Sigma has

a 180-degree fisheye that works on APS sensors now as well, so you
could get a Nikon D90 (or whatever) and use that as a lower-cost
alternative.

Cheers,
-Greg

From: "Reinhart, Christoph" <[email protected]>
Date: May 14, 2009 6:34:44 AM PDT
Dear colleagues:

I am planning to introduce HDR imagery in my daylighting class in the

fall using Photosphere. My understanding is that I will need a CCD
camera, a wide-angle/fisheye lense and a luminance meter to calibrate

the camera. Could anybody recommend any specific products that I
should buy? Has anybody compiled Photosphere under Windows (sorry
GregJ).

Thanks a lot,

Christoph

_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general

--
# Jack de Valpine
# president
#
# visarc incorporated
# http://www.visarc.com
#
# channeling technology for superior design and construction

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