Checking your histogram composition and focus outdoors is easy with hoodmans compact hoodloupe compact hoodloupe is worn around your neck like a normal loupe when it is time to review your image pull the hoodloupe out to full extension place hoodloupe over lcd screen hoodloupe optics will also allow you to view images in its compact state to accommodate those with less perfect vision hoodloupe has a 3 diopter adjustment precise german glass optics give you a 1 to 1 ratio for non pixe