Native Mount 3rd Party Glass On GFX Medium Format (Preview): TTArtisan 90mm f/1.25. Have not had this bad boy nearly long enough to form a coherent opinion about it. Will that stop me from posting the first few pics I took with it? Nope. Not at all. There are three ways to go with GF … Continue reading Native Mount 3rd Party Glass On GFX Medium Format (Preview): TTArtisan 90mm f/1.25.