In response to Ashley and others, I revisited the location where I recently
shot some test VR pans with the KODAK Pro14n camera (and posted a link to
them on this list).
This time I shot one full res pan (14 megapixel capture, 12 shots around) at
ISO80 and one full res pan at ISO400. I used a Nikon 20mm lens at F11 and
aperture priority metering. There was no direct sun this day like there was
the first time I shot this scene.
I stitched the two pans using Apple Quicktime VR Authoring Studio and MacOS
system 9.2.2. on a G4 laptop. I had to turn off the preview mode in QTVRAS
for it to function with files this size. The resulting stitched pict files
were just shy of 200 megabytes each. (QTVRAS had a problem stitching and it
overwrote the bottom 10-15% of the stitched file with data repeated from the
TOP of the stitched file. The whole pan probably would've been in the 225
meg ballpark, but I cropped off the overwritten area and moved on). The
resulting VR pans are 10 - 12 megabytes in size. I'd post them on my FTP
site, but I've run out of room there. If anyone wants, I'd be happy to
upload them to YOUR FTP site.
Many ask why shoot such a large pan. Actually, I wasn't going to, but I
received requests for it. And thinking about it, I can see three valid
reasons:
- the stitched pict is GREAT for large prints!
- stitch big, then sample down to any size you need,
- crime scene documentation (you can zoom in forever)
I then cropped the large Stitched Picts in Photoshop to 3456 by ~800 pixels,
down from over 17,000 pixels tall and just under 4000 pixels wide. I
selected this size because it is comparable to the size I'd get when
shooting film and scanning files at 512x768 pixels. The resulting pans
(with floating text) are about 800K.
These pans (ISO80 and ISO400, about 800K each) and the previous ones can be
downloaded from my FTP site:
FTP Protocol using the following information:
HOST: ftp.stclairphoto-imaging.com
USER ID: anonymous
PASSWORD: guest
DIRECTORY: /pub/KODAK
OR via your web browser at the following address:
ftp://ftp.stclairphoto-imaging.com/pub/KODAK/
ALSO ON THIS SITE ARE SOME THREE STILL FILES FROM THE PRO14n:
- Screen res version of still life scene shot at ISO 80
- Same scene shot at ISO 400
- FULL RES version of same scene at ISO 80
(saved as level 12 JPEG, it's about 17 megs in size)
An article I wrote about the Pro14n camera for VRMAG is now on-line and can
be found here:
http://vrm.vrway.com/vartist/VR_industry/VIEWPOINT_THE_NEW_KODAK_PROFESSIONA
L_PRO_14n_DIGITAL_CAMERA_.html
If you have serious questions about the protocol I used in the test series
(in the VRMAG article) I will be happy to respond in detail.
--
Pat St. Clair
St. Clair Photo-Imaging
Henrietta, NY 14467
www.stclairphoto-imaging.com
email@hidden
(585) 359-0730 Voice
> From: "Ashley Abraham" <email@hidden>
> Date: Tue, 10 Jun 2003 03:35:16 +0100
> To: "Pat St. Clair" <email@hidden>
> Cc: "QTVR Mail list" <email@hidden>, <email@hidden>
> Subject: Re: iqtvra: Kodak Pro14n
>
> Hi Pat,
>
> Thank you for the many examples shot with the Kodak 14n. The resolution on
> the 14MP pano was impressive.
>
> However, what would be of interest to me and I'm sure to many other QTVR
> protographers is the cameras performance at higher sensitivity settings. I
> note that all your source images were shot at ISO 80. As many of us have to
> work in poorly lit interior environments, I would be interested to know
> whether or not you tried this camera at ISO 200 and ISO 400 and if so, was
> there any visible noise at these settings?
>
> The question is can this camera repalce existing CCD based SLRs for VR
> interiors or will it essentially be relegated to brightly lit (typically
> outdoor) environments only.
>
> Regards,
>
> Ashley Abraham
> Digital City Limited
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