PTLens lens profile
 

Hello,
can someone help me to find the PDF user guide where is described how to
build
a profile for a lens ? I'd like to create a profile for my Zenitar 16mm used
with a
Canon 20D to remove fish-eye effect, but I'm no more able to find hao to on
the PTLens website.

Thanks, Max

PTLens lens profile
 

On Sun, 1 Jan 2006 21:04:33 +0100, "Q-Max"
wrote:

Hello,
can someone help me to find the PDF user guide where is described how to
build
a profile for a lens ? I'd like to create a profile for my Zenitar 16mm used
with a
Canon 20D to remove fish-eye effect, but I'm no more able to find hao to on
the PTLens website.

You don't need a profile for any fisheye lens, the current
PTLens has a "fisheye" check box which when checked allows
you to interactively de-fish the lens and correct CA as
necessary. There's a grid option to help with this.

--
John Bean

PTLens lens profile
 

Thanks John for your reply,
I know of the Fish-Eye settings, the idea is to create a proper profile to
automate that correction, without resettings everytime lens distortion
and chromatic aberration.

Max

PTLens lens profile
 

On Mon, 2 Jan 2006 15:44:08 +0100, "Q-Max"
wrote:

Thanks John for your reply,
I know of the Fish-Eye settings, the idea is to create a proper profile to
automate that correction, without resettings everytime lens distortion
and chromatic aberration.

It should remember them from the last usage. I use it as a
Photoshop plugin and it's also now well-behaved when used in
a PS action, remembering its settings.

The biggest value of the non-profiled use is it doesn't crop
automatically, giving access to the full horizontal field of
view of the lens. The profiled version crops to retain the
original aspect ratio which loses *a lot* of the HFOV.

--
John Bean

PTLens lens profile
 

"Q-Max" wrote in message
...
Hello,
can someone help me to find the PDF user guide where is
described how to build a profile for a lens ?
SNIP

The procedure can apparently be found in the PTLens user manual and
requires a donation:
http://www.epaperpress.com/ptlens/index.html , download page.

There are several sources that discuss calibration for distortion and
CA correction.
http://epaperpress.com/pano/index.html discusses it under the
Calibration topic.

There is also a Photoshop tool (action+script) that assists in CA
removal:
http://www.pinlady.net/vr/ There are lots of free tools, and
references to other websites, on that page.

Bart

PTLens lens profile
 

"Bart van der Wolf" ha scritto nel messaggio
...

The procedure can apparently be found in the PTLens user manual and
requires a donation:

Thanks Bart,
I've sent a donation yesterday and now I have the complete user manual


There are several sources that discuss calibration for distortion and
CA correction.
http://epaperpress.com/pano/index.html discusses it under the
Calibration topic.

There is also a Photoshop tool (action+script) that assists in CA
removal:
http://www.pinlady.net/vr/ There are lots of free tools, and
references to other websites, on that page.

I'll take a look at these links.

Max