Use with accessory clip-on magnifier to avoid vignetting. Otherwise, choose the SS250P when a magnifier is not needed. For LCD screens up to 2 1/2" diagonally. Unsure about the size? Download and print our easy-to-use Fit Guide for Digital Cameras (61K PDF file): Click here for Fit Guide SS250 (UK DSS4)US$29.95 All images and text on this site copyright Screen-Shade 2010.