Nikon Nikonos with 35mm f2.5 brand_Balda The Nikon TC-300 is a

The Nikon TC-300 is a teleconverter designed for Nikkor lenses with focal lengths longer than 300mm

What we can say for sure is that the mark has no effect on image quality

this is a heck of a flash

I'm not sure what a Neewer is

Nikon Nikonos with 35mm f2.5 brand_Balda The Nikon TC-300 is aThe Nikon Nikonos is a compact, rugged scale focusing camera originally designed for underwater use. Nikonos cameras were rated for submersion to 50m, but these cameras are at least 50 years old and we can't guarantee that they'll live up to that rating. Nevertheless, these are extremely durable cameras that are ideal for use in harsh environments, and they make fantastic all weather cameras for rainy days or camping. This Nikonos is in fair cosmetic