I always work with multiple layers. I rarely merge my layers unless I need to apply something specific that need a merge picture like a sharpness layer for one particular item after a curve layer. The only concern is file size and labelling. I always clearly label my layers so I don't get confuse when I reopen the file later on.
thats great!
thank you.
but if i take a photo with iso 100 and f/5.6 the result is a white photo XD
Wow, does are great. Have your tried doing some shorter exposures and then stacking the images. Since the stars are still moving you will not loose any of the trails. Let me know if you want me to explain it some more.
Thanks!
I just googled it a little bit and it seems you need the extended version of photoshop to do it. Is there a way to do it with the non extended version?
Just load the individual images as layers and set the blend mode of each to screen.