I have had my bino hood for several years. I like it a lot. It doesn't work that well with my Rollei that has a micro prism - there's some darkening of the image. On the other hand, it's easy to focus on the ground glass. I've noticed, since I conduct photo trips and pull out my Rollei and bino hood, that people around 60 and older usually can't make the images converge. I'm over 60 and I have no problem, however I started using the hood while I was in my early 50s. -- http://www.davewyman.com http://www.icyclist.blogspot.com (cycling through the meaning of life with bikes, cameras and computers) http://www.pbase.com/davewyman (my photography galleries) This mail is a natural product. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects.