Something Peter Ward said sent me thinking about extracting all the available resolution from my 300mm widefields. The limit is not the lens but the undersampling of the sensor. Started processing last night with a few new ideas. Finished this morning. This image is a HDR of a single field taken with the Canon 5DH and the Canon 300mm F2.8L.
Large image 10MB 7k pixels across.
http://avandonkbl.bigblog.com.au/dat...1213100230.jpg
I have not used any star reduction or Richardson Lucy enhancement. It is purely the resolution that is there due to the lens. The trick is to stack upsized images. In this case all images were 7k pixels wide 190MB tiffs.
I have also managed to get rid of all gradients.
Thanks Peter!
Bert