When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
The rubber eyecup might be bent in a little but is still reasonably pliant so it should be usable. I see one other DXF-3 listed currently that does not have the eyecup, I would think that would make it very difficult to use.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.