I thought I'd share my "new baby" with you. As the title says, it's an Olympus 600mm f/6.5 supertelephoto. I've wanted a 600mm, or longer, lens for most of my life, but never thought I'd have one. So, when I happened upon this one and was able to buy it for $350, delivered, I had to buy it, even though I've been trying (not very successfully) to resist spending more money on gear. I'm afraid my photos are not up to the usual level of camera porn seen here. They were shot with my phone, just after returning from my first outing with this lens, and I didn't think to dust or polish it. I was still dusty and sweaty, myself, so I may have added some of those fingerprints while I was arranging the lens for the shots. It is a big lens, measuring 377mm, or just under 15", with a retractable hood that adds roughly another 7" when extended, and a 100mm front element. Still, this is relatively compact for a lens of this focal length. It weighs 2,880g, or a bit more than 6 pounds. It has a maximum aperture of f/6.5 and a minimum of f/32. One weakness, in my view, is that it's closest focus is 36 feet, or 11 meters. I'll obviously need some extension tubes for this lens. One thing I found odd was that my Canon EF-mount extension tubes would not fit onto the OM-EF adapter I was using. I didn't really investigate why, but it seemed like an adapter that works with a given mount should work with a tube that uses the same mount. In order to get quick results, I shot the lens on my Canon 6D, rather than my OM-1. I found it pretty easy to focus on the 6D, unlike some manual lenses. But, I think my diopter may have been set wrong, because there were a lot of shots where I was sure it was focused correctly, but the results disagreed with me. Most of the missed shots were focused just beyond the subject, so at least it was consistent. Another issue I ran into is that it's too easy to change the focus by simply pressing my face against the camera, and pushing the lens extension in. There is no focus lock, as far as I can tell, and the rack-and-pinion focus mechanism works very smoothly and easily. Sort of a double-edged sword. It would also be nice if the hood would lock into position, but that doesn't seem to be a feature of this lens. Those are personal preferences, of course. I was able to get some results I was happy with, particularly at the end of the outing, when I was more practiced with the lens and the subjects weren't moving. The birds were more challenging; the cactus much more cooperative. A Red-Eared Slider, formerly an American species that is now found on every continent but Antarctica, apparently. For the non-nature lovers, it's not actually their ears that are red; it's just a marking above their ears. This was actually my first subject of the day, but he wasn't moving much, either. This appears to be a hybrid Mallard-x-domestic duck. This is a 100% crop. I consider this the shot of the day, since the duck was swimming diagonally away from me. And a Saguaro cactus in full bloom. This one is producing a massive number of blossoms. The knobby looking buds bloom a few at a time, to extend the breeding season, in case their pollinators are busy elsewhere. Saguaro are pollinated by an unusually high number of species, including bees, bats, moths, and a number of bird species. Once pollinated, the blossoms transform into fruits which contains thousands of seeds inside a sweet, pulpy red flesh that is highly prized by Native Americans.