Hello!
I use RawTherapee to process my photos. It has its own option to load
lens corrections, separate from Hugin, but basically does what you're
talking about in LightTable.
On 7/24/25 15:54, Erik Keever wrote:
Hi David,
Yes, for a zoom all geometric distortion, chromatic aberration and
vignetting parameters are (in general) a function of focal length.
Most zooms e.g. will switch from barrel when wide to pincushion when
tele'd. For that matter, distortion parameters also depend on current
focal distance as this, too, moves the internal optics.
In all truth: I hate to admit it but I honestly confess I'm a bit on
the fence when it comes to using Hugin to do these corrections now a days.
On one hand I want to use e.g. LightTable so I can throw my "real"
computer's processor at the .CR3 to squeeze the last bit possible out
of it. And when I was using a 70D, dcraw (combined with my own
high-order chromatic aberration correction code) could often produce
an image from a CR_2_ that was measurably superior to what came
"stock" from the camera. But with an R7, honestly, I find that the
improvement - if any - that I can get by "rolling my own" is not
enough to be worth it. Canon can measure their lens' geometric,
chromatic and vignetting distortion far more accurately than I can,
and all I need to do to access those coefficients is go into the menu
and click 'yes' on distortion and peripheral illumination correction.
-- Erik
On Wed, Jul 23, 2025 at 4:34 PM David W. Jones <[email protected]>
wrote:
Good afternoon!
I have five lenses I mostly use. One is a prime, another is a
500mm tele.
The other three are zooms.
When calibrating zooms, do I need to calibrate separately for the
different zoom lengths?
Thanks!
--
David W. Jones
[email protected]
wandering the landscape of god
http://dancingtreefrog.com
My password is the last 8 digits of π.
--
David W. Jones
[email protected]
wandering the landscape of god
http://dancingtreefrog.com
My password is the last 8 digits of π.
--
A list of frequently asked questions is available at:
http://wiki.panotools.org/Hugin_FAQ
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