Nikon D7100 brand_Pentacon The Vivitar MC 2X-4 Teleconverter

The Vivitar MC 2X-4 Teleconverter doubles the focal length of any Canon FD-mount lens that can attach to it

If you look at the sun through this filter

but nothing that's going to ruin your day in normal shooting

It's a lot more slick than anything Holga has the right to be

Nikon D7100 brand_Pentacon The Vivitar MC 2X-4 TeleconverterNikon D7100 24mp DX format digital SLR body in excellent cosmetic condition, with only light finish wear, approximately 2900 actuations. The D7100 is a DX format DSLR that shoots 24mp stills and 1080p video at up to 30fps and it's compatible with nearly any Nikon lens, from AI to AF S (including E type lenses). Includes battery, charger, and strap.