A wonderful Slr camera lens for background blur
Base on lens review, sigma review and sigma reviews.I’ve been using this sigma lens with my 20D for the past couple of weeks, and it’s so much fun that I’ve hardly used any other lens. I really enjoy the beautiful, smooth background blur that it gives me at f/1.4. And the sharp areas of the photo are very sharp, even wide open at f/1.4. The build quality is solid and the focusing ring is smooth, which is important for those who sometimes wish to manually focus or to use the sigma canon lens’ full-time manual feature to manually adjust lens focus even when in autofocus mode. I also find the sigma 30mm lens to be very resistant to flare, which is great sigma 30mm because I enjoy using it to shoot into the light and get a backlit effect on my out-of-focus background.
Tags: Digital SLR Lens Reviews, lens focus, lens review, Sigma, sigma 30, sigma 30 1.4, sigma 30mm, sigma 30mm 1.4, sigma 30mm f 1.4, sigma 30mm f 1.4 ex, sigma 30mm lens, sigma canon, sigma lens, sigma review, sigma reviews, Slr camera lens
The Sigma 18-200 F3.5-6.3 DC OS HSM Lens incorporates an Optical Stabilizer function and is exclusively designed for digital SLR cameras. It is perfectly suitable for low light conditions whether indoors, at dusk, or in telephoto range. This system uses two sensors inside the lens to detect vertical and horizontal movement of the camera by moving an optical image stabilizing lens group, to effectively compensate for camera shake. It also automatically detects panning movement of the camera and compensates for camera shake when shooting moving subjects such as motor sports. SLD (Special Low Dispersion) glass and aspherical glass provide excellent correction for all types of aberrations. This lens has a minimum focusing distance of 45cm (17.7″) throughout the entire zoom range and has a maximum magnification of 1:3.9. Since the inner focusing system means the front of the lens does not rotate, optional circular polarizing filters and the supplied petal-type hood can easily be used. A magnification scale is displayed on the lens barrel, ensuring ease of use. A zoom-lock switch mechanism is provided to prevent the lens from creeping due to its own weight. 69.3 - 7.1 degrees (Sigma SD format) angle of view 7 Diaphragm Blades F22 Minimum Aperture 45cm / 17.7 Minimum Focusing Distance 1 - 3.9 Maximum Magnification Petal Lens Hood Dimensions - Diameter 79mm x Length 100mm Weight - 21.5 ounces (610 grams)
Tags: 18 200mm, af lens, Digital SLR Lens, lenses sigma, Sigma, sigma 18 200, sigma 18 200mm, sigma 18 200mm lens, sigma camera lenses, sigma canon, sigma lens, sigma zoom lens, zoom sigma
