NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Fw: Digital Solar Image
From: Bill B
Date: 2008 Aug 11, 15:30 -0400
From: Bill B
Date: 2008 Aug 11, 15:30 -0400
George wrote: > ... I've found that if I first save it, > then open it with Adobe Photoshop LE (a crippled version of the real thing), > then I can use the gain slider on its navigator panel to expand it up, and > the picture of the Sun remains just as "blocky" as was the original image, > allowing us to investigae the real picture of the Sun as it left the camera. > The blockiness of this picture is just as we would expect, and the curious > flame-like edges that the zoomed-and-smoothed images showed, are happily > absent. They must have been caused by a smoothing algorithm trying to work > its magic on an image for which it was completely unsuited. Keep in mind JPEG is a lossy compression. Each time a JPEG is saved it will get worse. Camera raw to PhotoShop would be a better choice. Bill B. --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
