I have used Phase One Cameras and lenses since 2010 because they produce the best high resolution images – from the P65 to the IQ4. My landscape images are almost all captured with Phase One cameras, lenses, and digital backs. The current back is a 150 megapixel IQ4. The resolution and color must be seen to believe it. 

This is the Phase One IQ4 on a Phase One XF body with a Schneider 40-80mm lens attached. I use Phase One for almost all my landscape work. I admit to using my Sony cameras when I do not have time to set up the Phase One on a tripod and the scene is fleeting.