24mm F1.4 DG HSM | A Refurbished
starting at As low as $639 Regular Price $849
- Best-in-class optical performance
- High-contrast images with bright edges
- Minimized distortion throughout the entire image
- Minimized chromatic aberrations
- Hyper Sonic Motor (HSM) for silent, fast autofocus
- Exclusive low-dispersion glass
- Super Multi-Layer Coating reduces flare and ghosting
- Full-time manual focus
- Rounded 9-blade diaphragm
TIPA 2015: 24mm F1.4 Art
2015 EISA: 24mm F1.4 | Art
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Geometrical MTF Chart
10 lines per millimeter measure the lens's contrast ability (red lines). Repeating fine parallel lines spaced at 30 lines per millimeter measure the lens's sharpness ability (green lines) when the aperture is wide open.
Diffraction MTF Chart
Diffraction MTF takes diffracted light at every aperture into account which is very close to actual image data. Geometrical MTF does not consider the diffraction quality of light, yet it tends to show higher values than actual image.
The red line illustrates how the lattice pattern will appear in the actual picture when any lens distortion is taken into account.
The image will be seen as expanded (barrel distortion) in negative values or will be seen as a recessed (pincushion distortion) in positive distortion values.
The horizontal axis shows the image height and the vertical axis shows the brightness of the image
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