>>3476480>k1000>but a bit of fungus in the viewfinderdoes it look like pic related?
high chance it's actually prism corrosion. common issue on chinese made pentax k1000 cameras.
can't be fixed as it's the prism mirror silvering flaking off. trying to clean it will make it worse. you need to resilver the prism.
better to get another pentax body to make use of those k mount lenses. the pentax ME Super is fukkin sweet and kinda cheap.