Holga Lens with SLF Turret for Canon EF Filter Type_Special Effects This lens also has a

This lens also has a handy manual focus macro mode at the 70mm setting which focuses down to just 0

but excellent functionality and clean glass

Olympus OM-4 with a good Olympus OM F

It records a 170 degree image from corner to corner with all the circular distortion you'd expect from a fisheye

but pretty solid image quality throughout the zoom range

Holga Lens with SLF Turret for Canon EF Filter Type_Special Effects This lens also has aThis awkwardly named device is a Holga DSLR lens with its focusing mechanism removed and a frankly kind of sweet special effects filter system attached instead. The "SLF turret" accepts two special effects wheels (included) which include a range of colour and prismatic effects. You rotate the wheel to slide a new filter effect over the end of the lens, and you can swap them in seconds with a clever magnetic attachment system. It's a lot more slick