LensTip.com har anmeldt Sigma 4.5 mm f/2.8 EX DC CIRCULAR FISHEYE HSM, et objektiv der blev lanceret tilbage i 2007 sammen med Sigma 10mm F2.8 EX DC Fisheye HSM som tidligere er anmeldt her på MyDigitalPhotos.dk.
LensTip.com skriver bl.a.:
When, at the end of the previous year, Sigma announced the launch of two new „fisheye” type lenses, designed for use with small APS-C/DX sensors, I was pleased on the one hand and a bit apprehensive on the other.
My enjoyment arose from one simple fact – there was lack of this type of devices for most of mounts. A circular “fisheye” for small sensors was absent on the market at that time. A prime diagonal “fisheye” was only in the offer of Nikon and Olympus. The rest of companies had to make use of presented by us zoom Tokina lens (or a Pentax) 10-17 mm which, at 10 mm, gave 180 degrees angle of view but not f/2.8 aperture.