I have just started using DSS to stack my DSLR RAW's after using Imagesplus. I found the background to come out extremly dark with IP and it was impossible to extract out faint nebulosity which was plainly visible on jpeg's created from single RAW images in Photoshop. Also achieving good colour balance of the background eluded me.
Anyway my question is, in DSS when the stacking is completed an image is automatically saved as a 32 bit Tiff, "Autosave.tiff". When I reopen this file in either PS or DSS there seems to have been some stretching applied compared with the original image as it appears in DSS. Also if the original image is manually saved as a 16 bit tiff, changes embedded not applied, (even though I have not made any changes) when it is reopened it looks the same as the original image.
I have been through the help file but can't find anything of use. Can anyone here explain what is going on? I guess I really want to know which is the pure unadulterated image from the stacking process to use in other programs.
Neale,
It doesn't.
You have probably wrong settings...
I was using 16-bit tiff for photometry (like many others) and the accuracy is much better than 0.1m.
Many people claim Autosave.tiff is "better" (because it has wider dynamic range being 32-bit format) but for 400D and its 12-bit ADC this is irrelevant.
BTW, savings with "changes saved but not applied" does mean you haven't done any changes.
The image appearance in DSS with default settings is also considered as "change".. if you do not apply them, the image will appear untouched to other editors.
