Samyang Reflex 300mm f/6.3 ED UMC CS Lens for Micro Four Thirds Mount (Black)

Samyang Reflex 300mm f/6.3 ED UMC CS Lens for Fujifilm X Mount I used this lens on a Fuji X-T10 camera. I typically shoot at a fixed ISO 200, but for this lens, I increased the ISO up to 800 when needed in order to keep a 1/450 sec shutter speed, following the reciprocal rule of focal length and shutter speed. I also used focus peaking. Physically, the lens feels solid and adds very little weight to the camera. In this sense, it is a pleasure to use. Sadly, however, this 300mm lens is not in the same league as its cousin, the Samyang 8mm f/2.8 Fisheye II Lens for Fujifilm, which is brilliant. All of the attached photos were adjusted in Photoshop Elements. 1.) Before buying this lens, you know that this lens is dark. That fact really hits you when shooting in low light situations, and focusing becomes a problem. 2.) The lens should be stabilized - I experienced a noticeable camera shake when zoomed out. 3.) Often images are poorly saturated - colors are not as vibrant as your eye see them. 4.) Calibration of feet/meters on side of lens barrel is inaccurate 5.) There does not appear to be any point where infinity kicks in - you have to focus the lens no matter how far away the subject is. This is too bad, because if infinity kicked in at, say, 25 feet, then focusing on far off subjects wouldn't be such a bummer. 6.) Image Quality - Acceptable, but with a high rate of rejects. Even my best photos have a softness to them. In the photograph of my very photogenic cat, Fritz, the overall photo is good but you can see that the cat's eye is not sharp. 7.) Depth of field is narrow - note the eyes of the meadowhawk dragonfly are well defined, but the tail is out of focus. The body of the meadowhawk is a one-inch long and it's resting on a flat surface - the entire insect should have been in focus. 8.) I got better image quality for subjects close to me (within, say, 15 feet). However, I think that this is true of any lens. 9.) When a stray branch dangled in from of my subject, this out of focus branch appeared as a line of connected blurred circles. These circles detract from the photo. I read a review of this lens after I purchased it - it stated that this lens is for people who don't care about Image Quality! Another review said that this lens is better than nothing when that once in a lifetime shot comes up. I wonder. Did we purchase a large sensor camera just so our battle cry will be It's better than nothing? I'm not certain where this lens fits into my lens line-up: Its focal length is too long for portraits, landscapes, and nightscapes. However, the focal length is not long enough for many birds and other wildlife opportunities. Without stabilization, shots of faraway objects and shots of moving objects are difficult. In low light, it takes a while to fix your focus, hoping all the time that the wildlife will patiently wait. Image quality falls off with increasing distance to the subject, negating the advantage of a long focal length. If you subtract out the long focal length, my other lenses can do everything this lens can do and better. This lens is not a good fit for me. For some reason you can only upload 2 photos - I had about a dozen that that I wanted to share. - Bob