I recently took a long exposure shot of the sky at night on my OnePlus 5. The RAW image when viewed on phone turned out to be great, pitch black sky and white-red-blue stars! Pretty excited, I decided to show the picture to my family on a bigger screen. I quickly transferred the .dng (about 31 MB) to my laptop and opened it using Picasa photo viewer. And bam! The picture was nothing but noise, yellow-greenish dots everywhere and stars barely visible. I uploaded the image on 'Online Raw Converter' but the same output there. Can someone tell me why does this happen? And, is there any way I could view the image onto a PC with output like that on my phone?
Ps. I'm attaching low quality screenshots of the results on Phone and PC respectively. Sorry the screenshot of phone is 16:9 instead of original pic 4:3. Make sure to look in dark, there's about a 1000 distinct stars in this image.
Resolution : 3496x4656
File Size : 31.07 MB
Focal Length : 4.10 mm
Aperture : f/1.7
Exposure time : 10"
ISO : 100
ON PHONE (Gallery, Google Photos, Any app)