Canon Speedlite 580EXII eye piece it actually does a pretty

it actually does a pretty solid job on full frame cameras too

designed for LTM/39mm threaded lenses

The Nikon DK-21M is an eyepiece that provides a little bit of extra viewfinder magnification on Nikon cameras with a rectangular eyepiece (like the D700 and D7000 series) In excellent condition

plus three threaded tubes to fit in between

either with or without a 3/8” bushing (not included) or

Canon Speedlite 580EXII eye piece it actually does a prettyThe Canon Speedlite 580EXII is a powerful flash for Canon digital cameras with full E TTL compatibility, manual control, and a built in remote flash sensor for off camera use with compatible Speedlites. Includes softcase, stand and box.