Lens Distortion - Scale Factor Preview

Please use this forum to post bug reports, feature requests, tips, etc. for beta versions of Picture Window Pro 8

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den
Posts: 856
Joined: April 25th, 2009, 6:33 pm
What is the make/model of your primary camera?: Canon EOS-350D/Fuji X100T
Location: Birch Bay near Blaine, WA USA

Lens Distortion - Scale Factor Preview

Post by den »

Re: PWP8 Beta 05-Jun-2019

I was helping another PWP user with Lens Distortion and Warp and noticed a difference in Preview when adjusting Lens Distortion Scale Factor between PWP8 and PWP7.

PWP8:
Screenshot (9).jpg
Screenshot (9).jpg (42.91 KiB) Viewed 1305 times
PWP7:
Screenshot (10).jpg
Screenshot (10).jpg (51.44 KiB) Viewed 1305 times
The PWP7 Preview was expected for the Lens Distortion settings shown:
Scale Factor = 0.8354
3rd Order Coefficient = 0.3842
5th Order Coefficient = -0.1590

Edit1: The PWP8 Preview changes to the expected view when Method is changed from Polynomial to Curvature.

...den...
jsachs
Posts: 4203
Joined: January 22nd, 2009, 11:03 pm

Re: Lens Distortion - Scale Factor Preview

Post by jsachs »

PWP7 Lens Distortion had several problems that I fixed in PWP8 -- the Compute button was broken and the scale factor was being applied in such a way that it altered the distortion settings.
Jonathan Sachs
Digital Light & Color
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