Excerpt: I've read other reports on the web and decided to give this lens a go. The manual focus is tricky, but then what do you expect for the price and the lens size! The easiest way to focus is to zoom in the preview image on your DSLR and focus. Also use a tripod and learn what bokeh is and how to avoid it (or learn to love it!) There are a lot of potential cons to this lens if you don't have much experience with manual lenses and manually setting exposure times.
Pros: Consistent Output, Easily Interchangeable, Lightweight, Rugged, Value for money
Excerpt: I am looking for a tele lens for close-ups of plants, insects, and distant objects. This lens is good for that. This is an all-manual lens. Focusing is not bad if you are used to manual focus. Actually the ease of the rotation of the focus ring exceeded my expectations. Since it is fixed on f/6.3 requires more light. Requires a sturdy tripod. Otherwise it will pick up the slightest vibrations and cause in blurred image. (depends how picky you are).
Excerpt: I've had the Nikkor F5 and F8 mirror lenses ... very useable back in the day. But THIS lenses focus is way too short, ie. you can barely move it to make a change ... so that even on a tripod, using the magnifier, it very difficult to achieve proper focus.
Excerpt: I set this up on a carbon fiber tripod with a decent-ish ball head, used a D7000 with base ISO and mirror lock-up and compared it to a Nikkor AFS 70-200 f/2.8 VR with the TC20e 2x teleconverter. I shot indoors at a target about 30 feet away, maybe a bit less, and shot in manual for proper exposure.Overall, I found the 500mm mirror lens to have a really nice smooth focus ring, but that's hardly a selling point- you will absolutely need it.
Excerpt: I was looking for a long lens for shooting wildlife on the lake behind our house (mainly Redhead ducks which tend to shy away from humans). I had owned mirror lenses in the past so, the Samyang seemed like a good choice. A lot of other 500mm mirror lenses are f/8. The Samyang is f/6.3 about 2/3 of an f/stop faster. It is small enough & light enough that it doesn't need a tripod mount of it's own.
Excerpt: Using this lens without a tripod is nearly impossible. Shutter speed really needs to be jacked up. Best used in full daylight to compensate for the fixed aperture. Although it is very lightweight for it's focal length, a tripod collar would make it easier to handle. On a small camera, like the sony nex 6, it is just heavy enough to make we worry about damaging the camera when it is on a tripod.
Pros: Consistent Output, Easily Interchangeable, Lightweight, Strong Construction
Excerpt: I took some shots of Moon, Stars and Nebula. I found that the pictures quality from this lens are very good for Moon or larger-brighter object shots with Tripod at night. Focusing is very challenging for stars and nebula shot. Especially, I experience less contrast on nebula picture compared to the picture taken from 200mm Nikkor lens. Note that super shallow depth of field makes you take time to focus on the subject in the beginning.
Excerpt: this lens have: flare, onely one aperture, Not good in low light, manual hard focus to get, very sort depth of fild (1" at a distant of 6fit!) Can't get in to focus?...so way 5 stars? I tell you way: Flare?- buy a hood! Aperture?- use "A" or "M" mode and cantrol your speed/ISO Low light?- buy a 500mm f/2.8 just mortgaged your kidney first! Menual focus?- practice! Depth of fild?- it is a mirror lens you konw it right?! Can't get in to focus?- use a tripod!!!
Excerpt: Because of the very careful focussing required it takes a bit of getting used to. Naturally, good light makes the task easier. However, at the price it is a very good option and I have been able to take some excellent photos of birds etc. Some people will not l;ike the fixed aperture, but this is characteristic of this type of lens. If you want something more sophisticated then be prepared to damage the bank balance.
Pros: A Good Low Cost Option, Durable, Easily Interchangeable, Lightweight, Strong Construction