Sigma 15mm F2.8 EX DG lens for Canon
The Sigma 15mm f/2.8 EX DG Diagonal Fisheye is a full-frame fisheye auto-focus lens that fills the entire 35mm negative with a full 180-degree diagonal field of view. This unique lens enables you to create a variety of unusual compositions even when shooting ordinary subjects.
The improved DG lens coating reduces flare and ghosting, which is a common problem of digital cameras, and also creates an optimum color balance. Since most Digital SLR cameras use a smaller image sensor size (APS-C) than 35mm film cameras, 180_ angle-of-view can not be obtained with Digital SLR cameras. With those cameras only the center part of the frame is used, therefore, peripheral distortion will be very small.
The super wide angle of this lens makes it ideal for use with digital SLR cameras, providing a focal view of approximately 23mm.
SPECS:- f/Stop Range: 2.8-22
- Minimum Focus Distance: 5.9" (15 cm)
- Magnification: 1:3.8
- Angle of View: 180 Degrees
- Groups/Elements: 6/7
- Length: 2.5" (65mm)
- Maximum Diameter: 2.9" (73mm)
- Weight: 13 oz (370 g)
Kenko 1.4X Pro 300DGX Teleconverter
KENKO Teleplus Pro 300 converters are made with precision quality multicoated optical glass supplied by Hoya Corporation, the world's largest manufacturer of optical glass. These glass elements were designed to match the optical quality of the prime lens (even at the edges) and telephoto zoom lenses. The optical design of the elements and light path is wide enough not to cause vignetting.
With the PRO 300 1.4x, full AF operation is possible with camera lenses having a maximum aperture of F4 or brighter. The same light and contrast requirements apply.
Placed between the camera body and lens, a teleconverter contains a set of optics that will effectively increase the focal length of a lens by a specific amount. Common magnifications are 1.4 times and 2 times.
SPECS:- Magnification: 1.4x
- Depth of field: 1/2 of prime lens / 1/1.4 of prime lens
- Lens construction: 7E/4G (2x) / 5E/2G (1.4x)
- Lens coating: Multicoating
- Exposure Magnification: Approx.2 stop (2x) / Approx. 1 stop (1.4x)
- Width: 0 in. (68mm) (2x) / 0 in. (67mm) (1.4x)
- Length: 0 in. (43.5mm)(2x) / 0 in. (19.4mm) (1.4x)
- Weight: 6.5 oz.(184g.)(2x) / 4.7 oz. (132g.)
