For the new Olympus M.Zuiko 45 / 1.8 I have been looking for an alternative to the original lens hood. The B + W Lens Hood Rubber was the ideal replacement for me. It is robust, can remain in three different positions on the lens and is to buy as opposed to the original part, without increasing the credit facility. Incidentally, the rubber part is less sensitive than the silver-painted original. The lens cap fits despite screwed visor. With the ability to fold back this is the placement of the front cover, no fumbling. The reviewed on here Lens Hood for a 37mm front thread is already my third B + W Lens Hood. In my GF-1, the shades 45 / 1.8 from when using the flash and the lens hood. However, it does the same with the original Zoom 14-45 (OIS). I suppose for flashing the aperture simply from. Thus, the image quality deteriorates in any way.
My conclusion: Affordable and robust alternative to original accessories. All five.
