Best Mount For Macros

Tokina Lens AT-XM100PRO D (Nikon Fit) The AT-X 100 PRO D is a macro lens capable of life-sized (1:1) reproduction at 11.8 inches (30 cm). The lens multi-coating has been re-engineered to match the highly reflective silicon based CCD and CMOS sensors in today's digital SLR cameras. This lens gives the higher of both worlds because optics still give full coverage and excellent sharpness on 35mm film. A macro lens that can handle both the digital and film worlds with ease. Specifications: Zoom range: 100 mm Maximum aperture: F/2.8 Minimum aperture: F/32 Optical construction: Nine elements in eight Groups Angle of view: 24 degrees 30' Minimum focus distance: 11.8" (30 cm) Macro ratio: 1:1 Focus limiter: 1.28 to infinity Number of diaphragm blades: 9 Filter size: 55 mm Width: 73 mm Height: 95.1 mm Weight: 19 oz (540 g) Dedicated lens hood included Focus Limiter Switch The AT-X 100 PRO D also has a very convenient focus limiter switch that can lock the focus making it faster to focus when used as a moderate telephoto lens that is excellent portraits as well. Tokina One Touch Focus Clutch Tokina One Touch Focus Clutch mechanism for fast easy switching between manual and auto focus. Non-Rotating Filter 55 mm non-rotating filter thread for use with macro ring flashes and special effects filters. Tokina Optical Technology Aspherical Optics A standard lens is made up of a combination of spherical lens elements. Individual "lenses" within the lens are commonly referred to as "elements". A spherical element has an even curve to the surface of the glass. However, there can be problems with such elements; light entering the centre of the lens and light entering at the edge may not be highly focused at the same point. This is called spherical aberration. More enhanced computer assisted optical designs are creating lenses with more spherical elements. More spherical elements within a lens means a greater risk of spherical aberration having a negative impact on optic... [Read More]