The Seagull Right-angle finder is an inexpensive alternative to the Zigview. Ideal for close-up work, copying, low-angle and high-angle shots microscope and telescope photography, it can be attached onto most of the 35mm and Digital SLR cameras viewfinders by means of the coupling shoe on the Finder. The optics gives you a much brighter image than a normal viewfinder of a camera. The adjustable eyepiece compensates spectacle wearers. The roof prism construction allows the image to be seen the right way round. The 9-element lenses form a high quality glass roof prism that magnifies between x1 & x2. A +or- 4 dioptre eyesight corrector is included as are the multi eyepiece fittings forCanon EOS, Nikon and Sony/Minolta.