From the Store description:
Image Raw is a simple image viewer. It is designed as a companion app for digicam remote and shutter remote app. Allows the photographer to quickly review images downloaded from the camera. It can also be used as a standalone raw image viewer.
The following image formats are supported: 3FR ARW BMP CR2 CRW DNG GIF/Animated GIF JPG/JPEG NEF ORF PNG RAF RW2 TIFF/TIF
- To use this app, simply browse to the folder where the images are stored and tap on the list to open individual image.
- Use with touch screen: pinch to zoom in out, swipe/drag to move the image around
- Use with mouse/keyboard: Ctrl+mouse wheel to zoom in/out, use mouse scroll wheel or drag the on screen scroll bar to move the image around. Double click to quickly zoom in/out.
- Use with multitouch trackpad Pinch to zoom in/out, two fingers swipe to drag image around.
Please note this app uses 'Libraw' as the raw file decoder. For more information and the complete list of supported cameras, please visit: https://www.libraw.org/
Here's Image Raw UWP in action:
I've been following Image Raw UWP for a few months and it's now worth highlighting here. It's a relatively simple tool, but useful for anyone playing with capturing RAW images on a Lumia 950 or 950 XL and wanting to do some mobile checks before attacking the images with a photo tool on a desktop later on. In terms of UI, it's a bit quirky - the quick jump to 1:1 is great for checking absolute detail and accuracy at the pixel level, though if the photo is already at this level then I'd have liked to have seen this as a toggle that jumps back to the photo overview.
Worth a download. You can grab this in the Store here.