I bought the UV filter 4 weeks ago in the diameter which was specified when the objective of filter, and since it fits like a glove. About a deficiency in processing I can not complain. The protective function of the outer objective lens satisfies the filter of Hama full. About his image-enhancing function due to the blocking of UV radiation I can so far not got a serious statement met - we have November so low sun and only a very small number of exterior shots. Thanks 8x remuneration (HTMC) I have not noticed any troublesome side effects such as reflections in the image. My conclusion: A great value for money!