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John Rostron

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About John Rostron

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  1. One possibility is that you have a memory leak from another process. On Windows, I would have the Task Manager window open to monitor memory use. I assume that there is an equivalent facility on a Mac. John
  2. In the past (before the current update) I have found that if I Rasterize & Trim an image, then it behaves itself in the Nik plugins. John
  3. John Rostron

    color reversal

    @John van Barneveld, how did you acquire your negative image? Colour negative film has an additional orange mask. Scanner software will take this into account, but if you scan a negative film as if it were a positive, and then use Layer > Invert, you get the inverted mask as a bluish colour cast. Edit: So when you are scanning your image, you need to tell your scanner software that it is a colour negative. John
  4. John Rostron

    Milo (1st Post)

    This link seems to be broken. John
  5. You need to ensure that Affinity Photo is set as the default program to open tiff files (rather than Photoshop). Your windows search box should find the scanner software for you, but make sure the scanner is switched on before calling it. Having made the scan to your satisfaction, save it as a tiff file. It should then open automatically in Photo. This should happen whether or not Photo is already open. I find that when it opens the file, the Photo icon on the taskbar turns orange. Click on this and there is your scanned file in Photo. John
  6. If you use the Search for 'Flag-Waving', then it should point you to the macro I wrote to do just that (I actually called it Vexillomorphic Transformations, but that was just showing off). John
  7. In Windows, if you have Affinity Photo as the default program to open tiff files, then if you save your scanned file as a tiff, it will automatically open in Affinity. This works for other file types. This works for me with VueScan and SilverFast. It should work with the software from your scanner. John
  8. John Rostron

    Compare uncorrected photos

    What photo library? I'm on Windows. John
  9. I would assume that your macro behaviour will depend on the size of the size of the document. Why don't you try it and see? John
  10. John Rostron

    PlugIn Support

    ViewPoint should work as a standalone, so you do not need to regress to Photoshop. John
  11. You are unlikely to gain any advantage in trying to simulate bracketing using jpegs. These are typically 8-bit. You can get some useful pseudo-bracketing if you start with raw files as these are typically 12- or 14-bit. Most HDR software generates a high bit-depth image (32-bit) which encompasses all the range of exposure values in your multiple exposures. You cannot get this from a single original image. John
  12. It is very much a case of suck it and see. The highlighted spots in the FFT diagram denote frequencies characteristic of regular noise. You could take a gradual approach by erasing the brightest quartet of spots first, then see how that looks; then the next brightest quartet and so on. John
  13. I use a film scanner (Nikon LS 50). The few times I have scanned black-and-white negatives (or positives) they have come out fine using either VueScan or SilverFast. John
  14. John Rostron

    RAW Development

    No image editor will change the raw file (not even Adobe Raw). Many image editors save a record of edits that have been made as sidecar files. Affinity does not. If a program saved your changes back to a raw file, it would no longer be a raw file. Many users have requested that Affinity implement sidecar-like files. So far Serif has not committed itself. John
  15. John Rostron

    Forum nag

    When I joined this forum, I assumed that, like some other forums, i could not simultaneously be logged i from both my desktop and my laptop. It seems that I can so there is no real reason not to stay logged in. Perhaps I will. John
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