Another old favorite from around 1961, this 200/4Q was gotten in miserable hacked-up condition for $5 some time ago. Cleaned up a little, I find it works surprisingly nicely with extensions. With the full 68 mm. set on it's nice for bugs as long as they stand still long enough. (note, as usual, I forgot to reset Exif on the camera). In addition the sloppy AI conversion does not engage the prong on the extension tube, so it shot wide open even though stopped down to around F8, and ended up a bit noisier than it should. One of these days I'll have to try to add a prong, similar to that on the 28/3.5, to make it meter better.