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