Originally posted by itanium Yeah, u r right. I find this stack function in photoshop. when I use photoshop to open these samples as stack, I still see a lot of noise. So I think this software is not only stacking the photos, but also to do more things.
I think you're right.
I had a chance to take a closer look since I last wrote my comment and it looks like the software does a little NR along the way. And the evidence of this can be seen in the color detail shifts following processing. Having said, the software does a good job of reducing a process into a single click affair which seems like a pretty good deal. And so if we were comparing apples to apples, I'd say this would be an equivalent to stacking with NR. And so to investigate, I compared output from the ArcSoft Low Light NR with a stacking + NR action in Photoshop:
load in tabs for direct comparisson
NB. The CS5 Action was based on a default JPG NR profile. Though I'm thinking a little tweaking could yield better results. Likewise, since these were processed from poorly processed JPG images. I'd expect further definition and detail retention with RAW on the Photoshop Action side of things when all is said and done.
Hope this helps.
PS. the PS Action took aprox. 22 seconds to process on a high performance workstation.