Featuring crossing hatched alignment lines that focusing when subjects are perfectly aligned, this high transmittance and metal screen bright, clear viewing and effortless installation Replace your standard screen with this split image variant to significantly improve your manual focusing during demanding photographic situations enhanced manual focusing with this 45 degree split image focusing screen, designed specifically for camera to deliver accuracy Perfect for landscape photography, studio portraiture, and any scenario requiring critical focusing accuracy on subjects Ideal for professional photographers and discerning enthusiasts seeking focusing verification tools for their cameras