How can I correct a single image for vignetting in PTGui Pro?
I have always been interested in painting, but never suspected the existence of Sepia Tone)) It’s so nice to learn something new, thank you for the helpful tips on color. Previously, I needed to contact a company that is engaged in Image Editing Services for quality information and advice on the implementation of projects, and now I can easily communicate on different forums about painting and get all the same answers.
First you need to determine the vignetting of your lens. To do so, take a small panorama (e.g. 3 images, each overlapping about 50%). The amount of vignetting depends on the aperture of the lens so this should be done for each aperture at which you intend to do vignetting correction. In this calibration project, go to the HDR/Exposure tab and press Optimize Now. Press the Save buttons below the vignetting curve and the camera response curve to save the curves to a file. The actual vignetting correction can be done as follows: • Start a new PTGui Project • Load your source image. Note the lens projection that is chosen by PTGui (e.g. Rectilinear) • Switch to Advanced mode • Go to the HDR/Exposure tab and load the previously saved vignetting curve and camera curve. • Go to the Panorama Editor. Set the panorama projection identical to the lens projection (e.g. Rectilinear or Fisheye). • Press the Fit Panorama button • • Go to the Create Panorama tab, choose Set Optimum Size -> Maximum Siz
