Sigma 8-16mm f/4.5-5.6 DC HSM lens
... that when the Sigma 8-16mm f/4.5-5.6 DC HSM lens was introduced in 2010, it became the widest ultra wide-angle rectilinear zoom camera lens commercially available?
... that when the <b id="mwCMg"><a href="./Sigma_8-16mm_f/4.5-5.6_DC_HSM_lens" id="mwCMk" rel="mw:WikiLink" title="Sigma 8-16mm f/4.5-5.6 DC HSM lens">Sigma 8-16mm f/4.5-5.6 DC HSM lens</a></b> was introduced in 2010, it became the widest <a href="./Ultra_wide_angle_lens" id="mwCMo" rel="mw:WikiLink" title="Ultra wide angle lens">ultra wide-angle</a> <a href="./Rectilinear_lens" id="mwCMs" rel="mw:WikiLink" title="Rectilinear lens">rectilinear</a> zoom <a href="./Camera_lens" id="mwCMw" rel="mw:WikiLink" title="Camera lens">camera lens</a> commercially available?