Really good answer Robert. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Robert Meier Sent: Sunday, June 09, 2002 11:27 AM To: [EMAIL PROTECTED] Subject: [filmscanners] RE: JPG sharpening [was: Color spaces for different purposes]
> -----Original Message----- > So, aside of asking for any observation regarding improving my > workflow - why is the sharpening so much more effective on the smaller > image? In PS there are three parameters for USM. One of them is the radius. The bigger the radius the more surounding pixels are taken into account for sharpening. Now if you downsample your image it is kind of like compressing mutliple pixels into one pixel. For USM that has the same effect as increasing the radius. Therefore, if you use the same radius for the original image and the downsampled image then the effect of sharpening will be stronger for the downsampled image. Maybe this is what you see. Make sure you also play with the other two parameters. Robert ---------------------------------------------------------------------------- ------------ Unsubscribe by mail to [EMAIL PROTECTED], with 'unsubscribe filmscanners' or 'unsubscribe filmscanners_digest' (as appropriate) in the message title or body ---------------------------------------------------------------------------------------- Unsubscribe by mail to [EMAIL PROTECTED], with 'unsubscribe filmscanners' or 'unsubscribe filmscanners_digest' (as appropriate) in the message title or body
