astra image will darken some images with deconvolution. I do not worry as a auto colour in photoshop corrects it straight away.
You notice generally a brightening as the histostretch takes place when you split or convert to greyscale, and then darkening with some deconvolutions
As I am going through 30+ avis over the last two months, to reprocess with the new ppmcentre and split batch programs, this one cropped up.
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