On 12/20/2017 4:24 PM, Mike Gordon via olympus wrote:
I fondly recall His Mooseness' elegant dissertation on the different algorithms
used by the converters to correct linear distortion. That was a 5/5 lens cap
post and the most thorough analysis of that topic I have ever seen.
http://lists.tako.de/html/Olympus-OM/2016-09/msg00059.html
Now do I have to add Capture One, which is different yet?
As you know I have always railed against the empire of being bound by the OEM
metadata corrections AND they crop the image too much. Why ACR/LR could not
leave it as with Canyon where the degree of
correction is adjustable by the user, is a mystery.
I've assumed that OLY, Panny and Adobe made an agreement, details of the correction data in exchange for not
embarrassing them by showing how much image they were dropping by leaving a lot of linear distortion to be corrected in
software, then cropping to the original aspect ratio/width. Adobe avoids lots of development time and µ4/3 gets images
out of ACR/LR that match their out of camera JPEGs and Raw conversions in geometry and geography. Both avoid lots of
questions to answer. :-)
The Laowa 7.5/2.0 is far less trouble. Correcting the moderate barrel distortion loses very little AoV. But, oh well,
I'll save that confession for later. Black Friday can be dangerous. :-D
The DXO image unlike PTL is a bit larger, but that is OK and at least it is
adjustable.
Weeellll, there's a little box in DxO called "Keep aspect ratio"*, which chops off the edges - much like SilkyP, Viewer
3 and ACR, but with straighter lines. AND - If you give PTL a larger image to work with, by enlarging the canvas, it
makes something wider, and very like DxO.
BTW, by the time you constructed those superb roll-overs, a complete set of
images to submit for PTL could probably have been shot.
Maybe, but making the roll-over samples really makes me notice what's going on. And I use templates, so actually putting
the display together doesn't take much effort. If I didn't have a profile in DxO, it would be a different barrel of eels.
Bent out of shape too, Mike
Chuckling Moose
* Which mostly doesn't work in the new PhotoLab version. Got support to admit they didn't know and send my examples on
to the Development Team. Meantime, OP 11 works fine.
--
What if the Hokey Pokey *IS* what it's all about?
--
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