(From Tamron lens literature) The optical system of the new SP AF 14mm F/2.8 Aspherical (IF) lens, composed of 14 elements in 12 groups, includes two Hybrid Aspherical lens elements. These large ...

For example, Amazon is offering 14% off on this Sony E-mount Sigma 14mm f/1.4 lens. While none of the lenses we've selected are exclusively for astrophotography, they're all specialist ...

That is a really impressive result for an ultra-wide lens. The blue column represents readings from the centre of the picture frame at the various apertures and the green is from the edges.

The taller the column, the better the lens performance. CA (Chromatic Aberration) is measured with any in-camera corrections switched off, as far as we can know anyway. CA is really well ...