Once or twice a year I need a super wide-angle photo to reflect the overall mood of groups in space. A super wide angle lens with bayonet mount for my camera to me in these rare photos but too expensive. This lens was intent at various APS-C lenses with 18 mm focal length and different filter threads tested (from 55mm) means Filtergawinde adapters. Without going into the respective differences will, was as follows in my experiments: * Very strong edge blurring * Up to approx 30mm vignetting in the corners (slight "tunnel vision") Not recommended * Autofocus with rotating front lens due to the high weight of the conversion lens. * Image effects and wide angle with standard wide-angle (Zoom) otherwise impossible
In summary, I think the optical quality in combination with the kit lens (18-55f3.5-5.6) or eg also meinemTamron 17-50f2.8 or the Tamron 18-200f3.5-6.3 for "underground". Nevertheless, I keep it because me the effects are just this good value for money.
