Legacy ImageMagick Discussions Archive

I was just experimenting In conversion from RAW format to jpeg,png and webp. So now only png is greater among the three. I just want to find out the reasons!! :? So as PNG will be affected by Bayers filters which causes the mapping of 2 RGBG to a single RGB. Why its not doing the same in JPEG and ...

what happens when a nef is converted to jpeg? Will Bayers filter affect that as well?

I got your point. But I'm not trying to apply compression techniques on images. I'm just curious to know why the size is increasing here. As you told earlier NEF is loseless and PNG is loseless too. And as per expectation the Raw image should have more details than any image formats(PNG,GIF,JEPG ...

How can I know whether a NEF is lossy or not? And I wanted a loseless compression from NEF and thats the reason I converted it into PNG. Yep I understood with whatever that you were trying to tell. PNG will be more if you choose a 16 bit depth from a 8 bit NEF, but that should only double the size ...

So now it became 16.2 MB from 11 MB. It is still more than the Raw file.

I'm also having the same problem. That explains a few things. But I'm unsure about the remaining 2x increase is size. I converted a 11MB NEF to PNG and to my surprise the size became approx. 60MB.. What is causing this?