
What’s going on here?
I’ve found this lens for sale on eBay and it’s piqued my curiosity. It’s engraved “Blitz Improved Portrait f5” but it seemingly has no designated focal length. Anybody recognize this lens? It seems way too small to be a true portrait lens… There’s no brand name on it and my own research attempts to ID it have yielded nothing. Anyone reckon it’s worth buying?