Fujifilm EBC Fujinon 50mm f/1.4 è radioattività

“ They are:

? old-style non-EBC version (your photo #1), metal focusing ring and silver-coloured aperture ring
? old-style EBC version(s) (your photo #3): striped/segmented rubber focusing ring, usually black aperture ring but possibly silver as well
? new-style EBC version (your photo #2): uniformly knobby rubber focusing ring, different aperture ring & distance indicator build, slightly different weight and size
? new-style non-EBC version: looks the same as the new-style EBC version but does not have EBC text, and may or may not lack EBC coatings

The two old-style versions (both non-EBC and EBC) are radioactive , and also have different size and build than the later versions. These are clearly a different lens design, available with or without EBC coatings.

The two new-style versions (both with and without EBC text) appear otherwise identical to one another and are not radioactive. My guess is that the new-style version without EBC text is actually multi-coated, at least partially, but they've just stopped putting the text on the lens, while the old-style non-EBC lens is truly single-coated. To quote myself from the Fujinon 55mm f/1.8 thread (that lens has the same progression of styles, except that none of the versions are radioactive) „

“ politiz29 dove l hai portato? „