Nikon TC-20E III brand_MeFOTO and variable film speeds

and variable film speeds

but Sirui does an unusually good job with these

sharp modern 50mm design with quick autofocus and excellent wide-open performance

The Hoodman Hood Loupe is a well made magnifier for DSLR screens up to 3" across (or anything else that needs a bit of magnifying)

and only very minimal cosmetic wear

Nikon TC-20E III brand_MeFOTO and variable film speedsThe Nikon TC 20E III is an autofocus teleconverter designed for select Nikon AF S telephoto lenses (here's Nikon's compatibility list). Doubles focal length of compatible lenses, at the cost of two stops of light. In very good cosmetic condition, with clean optics. Includes caps.