Coldkennels, I've got the two versions of the J-8 and they both take a 40.5 mm screw on lens hood. You get cheap and cheerful chinese ones from ebay sellers like heavystar. It screws on the front aperture ring of the lens.
I'm aware of this - the issue is that the lens hood screws on, but then the LTM lens cannot focus. The body jams up against the "shoulder" of the hood as you focus towards the close-end of the scale. It's a bit annoying, to say the least. I need a hood that doesn't obstruct the focusing mechanism.
Put a filter on first, that will space it enough. 😀I can't put a hood on the LTM mount one, but I can on the Kiev one. The LTM one is built so that the whole body of the lens moves forward and back while the front element seems to stay still, meaning the body butts up against any hood that I mount. Is anyone else's like that? And if so, has anyone found a hood that fits?
I get very mild flares on my LTM version - not so much as to make it unusable, but enough that it annoys me on the rare occasion they do appear.Put a filter on first, that will space it enough. 😀
You might get vignetting if the hood isn't "wide" enough, of course. Personally, I've not found a hood necessary on the J-12 but I've seen enough people say it flares.



Check the black paint around the rear element on them, if it's knocked about or missing that can cause problems. Matt black acrylic paint will do a good job, if it's needed. Maybe I'm just more careful without thinking about it, because I know of the issue and so don't get flaring. Maybe I'm just lucky!It's strange: the glass (on both ends) is completely immaculate, so I don't know why it would be so much more prone to flaring.
I get very mild flares on my LTM version - not so much as to make it unusable, but enough that it annoys me on the rare occasion they do appear.
But the Kiev mount one is bloody atrocious, particularly in the corners...









...now where is that flare?

I think it's in the upper right corner😀