Free Nikon Mac OS X 10.7/10.8/10.9. Depending on your download speed. An issue that prevented images saved in JPEG format with Capture NX 2 Ver. 2.3.0 or 2.3.1 from opening in ViewNX 2 has. Capture NX-D is an in-house Nikon developed app specially designed for processing Nikon RAW formats and to provide its users with basic picture editing capabilities. Optimized for specific Nikon RAW file proc..