I posted a few images in the Sports forum with this setup and thought I'd share a couple with you guys. I got out a lens I hadn't used in 10 of 12 years a Vivitar 300mm f5 manual (I think I bought it for under $100 25 or maybe 30 years ago) Saturday morning to shot a few sports photos with. I coupled it with an equally old Vivitar 2x converter. I buckled it on the D2h and hoped for the best. While shooting from the outfield fence I had a bird land in a tree nearby so I figured why not. Here are the results for this very inexpensive setup.

LOL - Don't make me get my Kodak Retina Reflex III out and buy a roll of film!! That's just too cool. Nice work. Heck, I'm not even sure I remember how to work mine!

Old lenses are hard to part with lol I have a couple i bought on Ebay for pennies . Some of them are still very usefull . I like trying different old lenses with tubes .Some times the results are suprising as you can see from your 2 photos :)

This is not a setup I'll be using a lot. But it was kind of fun to play with it for a couple of hours. ISO was cranked up on that last one to around 800 and as you know the D2h is know for how noisy it can be.

While not the sharpest shots , you did one hell of a job and got your subject!

EDIT:
hahaha, I can say naughty words and they can't stop me :)