Nikon PK-3 centre filter The Canon Speedlite 420EX is

The Canon Speedlite 420EX is a compact flash for Canon digital cameras with full E-TTL compatibility and a built in remote flash sensor for off-camera use with compatible Speedlites

good quality standard lens for everyday shooting

This Mark III is in excellent condition

but it's a real gem of a lens

The Canon RF 100-400mm f5

Nikon PK-3 centre filter The Canon Speedlite 420EX isThe Nikon PK 3 is a 27. 5mm extension tube for manual focus F mount lenses. Will mount to any F lens and body, but transfers aperture information via old school pre AI bunny ears, so depending on your camera and or lens, you may need to meter stopped down on this one. In good working order, with minor cosmetic wear.