Get a quality lens with fixed 50mm mid-range telephoto focal length and f/1.8 aperture. The Sony 50mm f/1.8 Telephoto Lens has a built-in Optical SteadyShot image stabilization system which provides around a 4-stop shutter speed advantage, making it significantly easier to achieve crisp, blur-free images and video. Get beautiful, softly blurred backgrounds thanks to the circular aperture of the large maximum aperture of this lens. A linear motor used for focus drive contributes to low-noise focus operation, while a stepping motor built into the lens, technology inherited from Sony's professional camcorders, results in smooth, quiet aperture actuation ideal for recording movies. An elegant aluminum alloy exterior blends beautifully with the graceful design of an E-mount. Use direct Manual Focus (DMF) to go directly to manual focusing after autofocus lock-on without having to switch modes to facilitate focus adjustments on the fly it's perfect for portraits where depth of field may be extremely shallow.
I bought this lens for my Sony FS700 (video). The low price concerned me the sales staff assured me that I was buying a great lens. I went to a nearby park and played around a bit, and this is a montage of sorts http://www.youtube.com/watch?v=PsVY0lKqldM - I kept the aperture at f/1.8 and plyed with the ND fllters (it was a BRIGHT day) Not bad for just fooling around, aye? Well, here is the truly crazy test, using existent lighting in a garage at f/1.8, and then playing with extreme backlight and other extreme lighting conditions, and I think that you will be taken aback - there is no color-correction in this. This clip might have an ad so please just hit SKIP AD In this clip you can also hit the CHANGE QUALITY icon and view in HD (well, as a Windows Media Player ultra-compressed version, but better than the 480 setting...). By the way, I used manual focus and it was soft in parts only because of me, so don't blame the lens, ha ha. In any case, i am extremely happy with this and can now trust the quality of the other Sony offerings in the same price range, but I am going to get the 24mm Zeiss as soon as it's in stock (the $1,099 one)
This is the magnifying factor of a lens. Macro lenses will often be described by their “magnification factor”. A lens with a 1:1 magnification factor produces a projected image on the sensor which is the same as the subject.
The individual pieces of glass that form the overall optical construction. Most lenses have between four and eleven elements to bend the light rays to ensure a perfectly formed image appears on the light sensitive surface, such as a film or CCD. The elements are arranged in groups and may be seen in specification sheets as, for example, 6 elements in 4 groups. That configuration may have two single elements and the other four grouped in pairs.